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Perseid Meteor showerView Messagesa backpackers silent movie “Saw the first of the meteors in our neck of the woods last night. Some of them were pretty amazing leaving trails of phosporesence; almost neon like. watched from about 11 to 2am.” 1:20:25 PM 8/12/04 1:21:58 PM 8/12/04 “cool, it worked the first time. (patting myself on the back)” 1:23:24 PM 8/12/04 “Somebody stole our sky here. Nothing to see, ... move along!” 1:25:07 PM 8/12/04 “Dang, you know that's how it always happens... you think you do something great and then you notice your dress is stuck in your panty hose after you've walked through the crowd of people (wondering vaguely why there is muffled laughter behind you...) let's try this link: Perseid Meteor show” 1:29:12 PM 8/12/04 “I forgot to look last night and there were some open skies. But I watched for a while from 5:45 AM. -- Nothing! Maybe I'll see some tonight.” 1:53:15 PM 8/12/04 “No mtnmom2, I have not noticed when my dress gets stuck in my pantyhose. I don't wear a dress, and I don't wear pantyhose. Sorry.” 1:55:41 PM 8/12/04 “I thought I would get a chance to see some last night but I waited to long and clouds rolled in. We have rain forcasted for all night I think so I think tonites a wash too. The weatherman said the storms might blow through here earlier than previously thought tommorow afternoon so Im hoping Ill get to see some tommorow night.” 1:58:09 PM 8/12/04 “Geo, (LMAO), I'm sure glad you don't have that problem... Never happened to me except figuratively but it did happen to a friend of mine and a lady at the store I used to work at. It's a little embarrassing to have to tell someone that. Clear here, hope to catch some more tonight. Sorry for the cloudy conditions out east. They are rather cool looking.” 4:27:25 PM 8/12/04 “He wears mini skirts and garters - problem solved! ;)” 4:43:57 PM 8/12/04 I tried. “Went down to the ocean for a short while near mid-night. Saw flashes, but they were lightning flashes. A few stars were visible directly overhead and the rest of eastern sky was cloudy.” 11:55:27 PM 8/12/04 I tried too “but Northern CA is on fire again..too much smoke.” 12:13:25 AM 8/13/04 “mtnsteve, i saw the fires on the news this AM and was thinking about you...how close is it? Any estimate when they'll get it under control?” 12:29:43 AM 8/13/04 “Mtn Mo..It's a few miles North East of us....7500 acres and 67 homes lost. They were saying it's 50% controlled, but it just changed direction again and is burning toward another batch of homes. Things don't look real good right now. Our place is safe for now, but I have a few friends that are real worried. The smoke is real bad, visibility ranges from about a mile to half mile...and thats several miles from the fire.” 12:51:00 AM 8/13/04 “Glad to hear that your place is safe...please keep me posted. I am planning to be on Mt Shasta next Thursday - Sunday. Email me your number, maybe we can get together for some food and drink.” 12:58:22 AM 8/13/04 “The annual Perseid meteor shower is expected to put on 'a great show' this year, peaking in mid-August with a display of dozens of shooting stars each hour. The Moon will be out of the way, leaving dark skies for good viewing as Earth plunges through an ancient stream of comet debris. Little bits, most no larger than sand grains, will vaporize in Earth's atmosphere, creating sometimes-dramatic "shooting stars." "It's going to be a great show," said Bill Cooke of NASA's Meteoroid Environment Office at the Marshall Space Flight Center in Alabama. "The Moon is new on August 12, which means no moonlight, dark skies and plenty of meteors."” 9:57:01 PM 7/12/07 “ Perseids (PER) Active: July 17 —August 24 Maximum: August 13; 5h —7h30m UT (λ = 140°0 —140°1) - but see text ZHR = 100 { Even though the radiant will already be above the horizon at sunset, the show improves greatly after local midnight when you are on the side of the planet actually passing through the stream of meteoroids. Venus, Mercury, Sun and Moon all set together with Saturn not far behind... just ahead of Leo. The bright star overhead will be Vega in the constellation Lyra (nearly a parallelogram shape). Jupiter will be off to the SSW next to the red supergiant Antares in the heart of Scorpio. And The Show Begins (allegedly, supposedly). Peak expected: 1:00 - 3:30 am EDT, August 13 (Monday morning, ugh) ZHR (Zenithal Hourly Rate): 100 -- the quantity of meteors a person should reasonably expect to see, per hour. Get a folding lounge chair and point your feet to the northeast (dental floss, optional). } The radiant, as it passes between Perseus and Cassiopeia during the period. IMO Meteor Shower Calendar 2007 The Perseids were one of the most exciting and dynamic meteor showers during the 1990s, with outbursts at a new primary maximum producing EZHRs of 400+ in 1991 and 1992. Rates from this peak decreased to ~ 100 —120 by the late 1990s, and in 2000, it first failed to appear. This was not unexpected, as the outbursts and the primary maximum (which was not noticed before 1988), were associated with the perihelion passage of the Perseids' parent comet 109P/Swift-Tuttle in 1992. The comet's orbital period is about 130 years, so it is now receding back into the outer Solar System, and theory predicts that such outburst rates should dwindle as the comet to Earth distance increases. However, some predictions suggested 2004 —2006 might bring a return of enhanced rates ahead of the usual maximum, and in 2004 a short, strong peak happened close to that anticipated pre-peak time. After that, activity seemed to be roughly normal in 2005, and the moonlit 2006 return was still to come when this text was prepared, but nothing untoward was predicted for 2007 in any case. An average annual shift of +0°05 in the λ of the “old” primary peak had been deduced from 1991 —99 data, and allowing for this could give a possible recurrence time around 9h UT on August 13 (λ = 140°16), if so a little after the most probable maximum, that of the “traditional” peak always previously found, which is given above. Another feature, seen only in IMO data from 1997 —99, was a tertiary peak at λ = 140°4, the repeat time for which would be 15h UT on August 13. Observers should be aware that these predictions may not be an absolute guide to the best from the Perseids, and plan their efforts accordingly, so as not to miss out, just in case! Whatever happens, and whenever the peak or peaks fall around August 13, new Moon on August 12 creates perfect observing circumstances this year. For mid-northern latitudes, the radiant is sensibly observable from 22h —23h local time onwards, gaining altitude throughout the night. The UT morning-hour maxima suggested here would be best-viewed from across North America and northern South America, while the possible ~ 15h UT peak would fall best for Far Eastern Asia. Visual and still-imaging observers should need little encouragement to cover this stream, but telescopic and video watching near the main peak would be valuable in confirming or clarifying the possibly multiple nature of the Perseid radiant, something not detectable visually. Recent video results have shown a very simple, single radiant structure certainly. Radio data would naturally enable early confirmation, or detection, of perhaps otherwise unobserved maxima, assuming more than one takes place, if the timings or weather conditions prove unsuitable for land-based sites. The only negative aspect to the shower is the impossibility of covering it from the bulk of the southern hemisphere. ” 11:23:35 PM 7/12/07 “ Meteor Streams 109P/Swift-Tuttle Note: Make sure you have Java enabled on your browser to see the applet. ” 11:29:43 AM 7/15/07 “i love this one. i sure hope the sky cooperates this year.” 11:31:38 AM 7/15/07 “No problem with the Moon this time ----but those freakin' clouds better clear out !!! LOL” 11:36:57 AM 7/15/07 “Maybe I'll get a chance to head back to camp and see it from there. We have a wonderful spot to see it from, actually several of them. BrianSean will be working there during the Perseid.” 11:46:21 AM 7/15/07 “ [IMO-News] Meteor Activity Outlook for July 13-19, 2007 For observers in the northern hemisphere meteor activity finally picks up in July after months of low rates. Several showers become active this month and peak toward the end of the month. Sporadic activity increases with each passing week throughout the northern summer. Activity seen in the southern hemisphere is peaking and will remain strong throughout the month. Later in the month strong minor shower activity will offset the falling sporadic rates in the south. Sporadic rates as seen from the southern hemisphere are highest early in the month and then fall quite steeply as the southern winter progresses. During this period the moon reaches its new phase on Saturday July 14. At this time the moon is located near the sun as seen in the sky and not visible at night. Later in the period the thin waxing crescent moon will enter the evening sky but will set well before the prime morning observing hours. The estimated total hourly rates for evening observers this week is near three for those located north of the equator and four for observers south of the equator. For morning observers the estimated total hourly rates should be near fifteen for those located in the northern hemisphere and twenty for those viewing from south of the equator. These rates assume that you are watching from rural areas away from all sources of light pollution. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. [ ... ] Sirko Molau's study of video radiants has revealed early Perseid activity peaking on July 20. The radiant is then located at 00:48 (012) +51, which places it southern Cassiopeia, six degrees south of the second magnitude star Shedar (Alpha Cassiopeiae). This radiant is best placed at dawn when it lies highest in the sky. This enhancement of Perseid meteors is active July 15-22 when rates may rise to 2-3 per hour. At 52km/sec., the average meteor from this radiant would be of medium-swift velocity with a good percentage of trains. Sporadic rates are now rising for observers in the northern hemisphere and are peaking for those located south of the equator. One would expect to see perhaps ten random meteors during the last hour before dawn from rural observing sites located in the northern hemisphere. During the first dark hour after the end of evening twilight, perhaps three random meteors can be seen per hour. Sporadic rates increase as the night progresses so rates seen near midnight would be near six per hour. Late morning sporadic rates seen from the southern hemisphere are now near sixteen per hour from rural observing sites. During the first dark hour after the end of evening twilight, perhaps four random meteors can be seen per hour, increasing to eight by midnight. [ ... ] Clear Skies! Robert Lunsford International Meteor Organization http://groups.yahoo.com/group/imo-news/ ” 12:17:09 PM 7/15/07 “Cool Deal ---- !” 12:31:27 PM 7/15/07 “Article on New Scientist about this year's show. "Perseid Meteors Set to Dazzle" http://space.newscientist.com/article/dn12396-perseid-meteors-set-to-dazzle.html” 8:39:37 AM 8/01/07 “Anyone have a family trip planned for the mid-atlantic states on Aug 10-12 to view this?” 8:44:16 AM 8/01/07 “Cool --” 8:48:37 AM 8/01/07 ““Anyone have a family trip planned for the mid-atlantic states on Aug 10-12 to view this?” hyway 8:44:16 AM 8/01/07 No, but you can come up to Michigan with the kids to join our trip, you crazy bassturd” 9:34:30 AM 8/01/07 “hmmmm, yall don't think you would be a bad influence on my kids?” 9:36:49 AM 8/01/07 “No way man. Camping out on the beach, can't beat that!” 9:47:46 AM 8/01/07 “I have a lot of beaches near me, most are populated but there is a State Park (access by public people ferry or by private boat) with no roads or buildings other than the ranger station and a bathhouse and a few totally undeveloped islands you can only get to by private boat. Maybe I'll try that, but it is so damn hot at night here” 10:00:55 AM 8/01/07 “My family trip that day will be in the mid-atlantic, out the door to our meadow. We are in the country so we get little light pollution. Anyone near the MD/PA border is welcome to join us.” 10:08:38 AM 8/01/07 “humm - if the weather looks good I could see a North Fork Mtn hike around that time” 10:17:46 AM 8/01/07 “We'll be watching them on our wedding night. :)” 11:02:19 AM 8/01/07 “SURE you will....” 12:59:24 PM 8/01/07 “what? You dont think I'll be seeing stars? ;) LOL!!! We already have a kid... no surprises there. :p last edited: 8/01/07 1:31:34 PM” 1:31:14 PM 8/01/07 “maybe from the donkey punch” 1:31:48 PM 8/01/07 “I've got your donkey punch right here hyway! :p” 1:32:50 PM 8/01/07 “whoohooo, I knew you have always wanted me. (come on, that donkey punch line was funny, I don't care who you are).” 1:35:15 PM 8/01/07 “dream on funny man. :p LOL” 1:43:54 PM 8/01/07 “Why Hyway, that's when the all about the kids is....just 18 hours north. =)” 2:53:37 PM 8/01/07 “Isn't that what Wounded Knee was referring. I am a little concerned that you people might corrupt my children? make them nice and considerate or something similar?” 4:14:46 PM 8/01/07 “Another forward from the IMO --- [IMO-News] Meteor Activity Outlook for August 3-9, 2007 August is the best month for viewing meteor activity from the northern hemisphere. Not only is the activity enjoyable but the balmy nights are much more pleasant than those experienced later in the year. As the month begins the southern radiants are still active and often matching the sporadic rates. The sporadic rates increase as the month progresses providing a decent show for the normally slow evening hours. The Perseids kick into high gear the second week of the month and fill the skies with colorful streaks of light during the entire night. From the southern hemisphere activity falls precipitously. This is much like what the northern hemisphere experiences moving from January into February. The southern radiants put on a good show the first week of the month. They taper off the second week and are nearly extinct by the third. In the meantime the sporadic rates that were so impressive in early July are now half as strong and still getting weaker. Unless you are located near the equator you will not see much of the Perseids. From the southern hemisphere any evening Perseids are impossible to see. You have to wait until the last hours before dawn and hope that some will shoot upwards from low in the northern sky. During this period the moon reaches its last quarter phase on Sunday August 5. At this time the half-illuminated moon rises near 0100 local daylight time and remains in the sky the remainder of the night. Conditions improve as the week progresses with the moon's phase waning and it rising later in the morning. The estimated total hourly rates for evening observers this week is near three for those located north of the equator and two for observers south of the equator. For morning observers the estimated total hourly rates should be near twenty for those located in the northern hemisphere and sixteen for those viewing from south of the equator. These rates assume that you are watching from rural areas away from all sources of light pollution. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. Morning rates are reduced during this period due to moonlight. The radiant positions listed below are exact for Saturday night/Sunday morning August 4/5. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant so it is best to center your field of view so that the radiant lies at the edge and not the center. Doing this will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night. The following showers are expected to be active this week: The Kappa Cygnids (KCG) are active from a wide radiant located at 18:52 (283) +58. This position is located in southern Draco, four degrees northwest of the fourth magnitude star Kappa Cygni. Current rates would be near one shower member per hour. With an entry velocity of 25 km/sec. most of these meteors will appear to travel slower than average. The radiant is best placed near 2300 Local Daylight Time (11pm LDT) when it lies nearly overhead for much of the Northern Hemisphere. Due to its high northern declination this activity is not well seen from the Southern Hemisphere. The Alpha Capricornids (CAP) are active from a wide radiant located at 20:52 (313) -08. This position lies in southwestern Aquarius, two degrees south of the fourth magnitude star Epsilon Aquarii. The radiant is best placed near 0100 local daylight time, when it lies highest in the sky. Current rates would be near two per hour, no matter your location. Don't mix these meteors with the antihelion meteors, which have a radiant just to the east. Both radiants need to be in your field of view to properly sort these meteors. With an entry velocity of 23 km/sec., most activity from this radiant would be slow. The Antihelion (ANT) radiant is now centered at 21:40 (325) -12. This area of the sky is located in a northeastern Capricornus, three degrees northwest of the variable star Delta Capricornii. This radiant is best placed near 0200 LDT, when it lies on the meridian and is highest in the sky. Rates at this time should be near two per hour as seen in the northern hemisphere and three per hour for those located south of the equator. With an entry velocity of 30 km/sec., the average antihelion meteor would be of medium-slow speed. The Delta Aquariids (SDA) are active from a radiant located at 23:00 (345) -14. This position lies in southwestern Aquarius, two degrees west of the third magnitude star Delta Aquarii. The radiant is best placed near 0300 local daylight time, when it lies highest in the sky. Current rates would be near two per hour visible from the southern hemisphere and one per hour from the northern hemisphere. With an entry velocity of 41 km/sec., most activity from this radiant would be of average velocities. The Pisces Austrinids (PAU) radiant is located at 23:12 (348) -27. This area of the sky lies in extreme northwestern Sculptor, four degrees northeast of the bright star Fomalhaut (Alpha Piscis Austrini). These meteors are best seen near 0300 LDT, when the radiant lies highest above the horizon. One can expect rates near one per hour from the southern hemisphere and less than one from the north. At 35/km per second, these meteors are of average velocity, slower than the Aquarids but faster than the Alpha Caps and the antihelion meteors. Perseid (PER) activity is now near five per hour, as seen from the northern hemisphere. These rates will increase sharply as we approach the peak on the morning of August 13. The current radiant position lies at 02:28 (037) +56, which is located in extreme northwestern Perseus, two degrees west of the fourth magnitude star Eta Persei. The radiant is well placed for those in the Northern Hemisphere during the last few hours before dawn. Due to the high northern declination (celestial latitude) of the radiant, rates seen from the Southern Hemisphere are very low when compared to those seen north of the equator. At 59 km/sec., Perseid meteors are swift, often exhibiting persistent trains. Sporadic rates are now rising for observers in the northern hemisphere and falling steadily for those located south of the equator. One would expect to see perhaps eight random meteors during the last hour before dawn from rural observing sites no matter your geographical location. As seen from the northern hemisphere during the first dark hour after the end of evening twilight, perhaps three random meteors can be seen per hour. Sporadic rates increase as the night progresses so rates seen near midnight would be near six per hour. As seen from the southern hemisphere during the first dark hour after the end of evening twilight, perhaps two random meteors can be seen per hour, increasing to six by midnight. Morning rates for all locations during this period are reduced by moonlight. Kappa Cygnid (KCG) 18:52 (283) +58 Northern Hemisphere - 1 Southern Hemisphere - <1 Alpha Capricornid (CAP) 20:52 (313) -08 Northern Hemisphere - 2 Southern Hemisphere - 2 Antihelion (ANT) - 21:40 (325) -12 Northern Hemisphere - 2 Southern Hemisphere - 3 Delta Aquariids (SDA) 23:00 (345) -14 Northern Hemisphere - 1 Southern Hemisphere - 2 Pisces Austrinids (PAU) 23:12 (348) -27 Northern Hemisphere - <1 Southern Hemisphere - 1 Perseids (PER) 02:28 (037) +56 Northern Hemisphere - 5 Southern Hemisphere - <1 Clear Skies! Robert Lunsford International Meteor Organization ” 7:54:09 AM 8/04/07 “I was out last Saturday night at a star gazing presentation. Which is kinda funny, cuz it was a full moon night. ;-P Anyhoo, saw slide show on planets, stars, constellations etc. Then got to look into a nice telescope. Was nearly freakin' blinded when he put it at 200x and the full moon filled the viewfinder other than a small ring of black (not bacon ring!) around the edge. Reminded me of my last visit to the eye doctor (which had me howling in bright-light-eye pain!) Am sure my one dilated and one non-dilated eye would have looked funny (could people have seen them! lol) Had to look along the edge of the moon to not be blinded and to get some details. Then the guy was hoping we'd see some meteors from one of two showers going on. We didn't. Hmmm... full moon? And lights of the city of Rochester, MN close by? LOL! Last night I got home from a shopping trip late. Was a nice night of moderate temps. Prolly shoulda stayed up a bit, but will have the next couple weekends, right? I always thought Perseids peaked the first weekend in August (been watching them for 20 years, since ex and I laid on an old car hood to view), but had heard from this guy (and others) it's expected to be the second Aug. weekend this year. Rain today... but I will get out at some point, rest assured, and lay on a blanket or in a tent (no old car hoods! LOL!)... and gaze at the heavens.” 8:14:40 AM 8/04/07 “ Coupla Quickies --- 1) If your bacon ring turns black, consult a physician, LOL 2) One eye dilated will make you look like David Bowie and/or a victim of head trauma, aneurysm, etc. 3) Perseids peak August 12/13 every year just like clockwork (barring unforeseen occurrences).... But the distribution isn't very 'narrow' so they're good to check out as much as a week before and after. The Moon can be nice, but It Sure Screws Up Everything Else Astronomywise!! This year .... New Moon about 7 pm EDT on the 12TH!!!! Can't get much better than that. ” 8:37:51 AM 8/04/07 “ forward --- [IMO-News] Meteor Activity Outlook for August 10-16, 2007 August is the best month for viewing meteor activity from the northern hemisphere. Not only is the activity enjoyable but the balmy nights are much more pleasant than those experienced later in the year. As the month begins the southern radiants are still active and often matching the sporadic rates. The sporadic rates increase as the month progresses providing a decent show for the normally slow evening hours. The Perseids kick into high gear the second week of the month and fill the skies with colorful streaks of light during the entire night. From the southern hemisphere activity falls precipitously. This is much like what the northern hemisphere experiences moving from January into February. The southern radiants put on a good show the first week of the month. They taper off the second week and are nearly extinct by the third. In the meantime the sporadic rates that were so impressive in early July are now half as strong and still getting weaker. Unless you are located near the equator you will not see much of the Perseids. From the southern hemisphere any evening Perseids are impossible to see. You have to wait until the last hours before dawn and hope that some will shoot upwards from low in the northern sky. During this period the moon reaches its new phase on Sunday August 12. At this time the moon is located near the sun and is invisible at night. Late in the period the waxing crescent moon will enter the evening sky but will not interfere with meteor observing. The estimated total hourly rates for evening observers this week is near four for those located north of the equator and two for observers south of the equator. For morning observers the estimated total hourly rates should be near fifty-five for those located in the northern hemisphere and twenty for those viewing from south of the equator. These rates assume that you are watching from rural areas away from all sources of light pollution. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. The radiant positions and rates listed below are exact for Saturday night/Sunday morning August 11/12. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant so it is best to center your field of view so that the radiant lies at the edge and not the center. Doing this will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night. The following showers are expected to be active this week: The Kappa Cygnids (KCG) are active from a wide radiant located at 18:52 (284) +58. This position is located in southern Draco, three degrees northwest of the fourth magnitude star Kappa Cygni. Current rates would be near one shower member per hour. With an entry velocity of 25 km/sec. most of these meteors will appear to travel slower than average. The radiant is best placed near 2300 Local Daylight Time (11pm LDT) when it lies nearly overhead for much of the Northern Hemisphere. Due to its high northern declination this activity is not well seen from the Southern Hemisphere. The Alpha Capricornids (CAP) are active from a wide radiant located at 21:20 (320) -05. This position lies in western Aquarius, two degrees northwest of the third magnitude star Sadalsuud (Beta Aquarii). The radiant is best placed near 0100 local daylight time, when it lies highest in the sky. Current rates would be less than one per hour, no matter your location. Don't mix these meteors with the antihelion meteors, which have a radiant just to the east. Both radiants need to be in your field of view to properly sort these meteors. With an entry velocity of 23 km/sec., most activity from this radiant would be slow. The Antihelion (ANT) radiant is now centered at 22:08 (332) -09. This area of the sky is located in a southwestern Aquarius, two degrees southwest of the fourth magnitude star Theta Aquarii. This radiant is best placed near 0200 LDT, when it lies on the meridian and is highest in the sky. Rates at this time should be near two per hour regardless of your location. With an entry velocity of 30 km/sec., the average antihelion meteor would be of medium-slow speed. The Delta Aquariids (SDA) are active from a radiant located at 23:20 (350) -13. This position lies in eastern Aquarius, close to the fourth magnitude star Omega Aquarii. The radiant is best placed near 0300 local daylight time, when it lies highest in the sky. Current rates would be near two per hour visible from the southern hemisphere and one per hour from the northern hemisphere. With an entry velocity of 41 km/sec., most activity from this radiant would be of average velocities. The Perseids (PER) reach maximum activity on August 13 with average rates expected to be near sixty shower members per hour. The current radiant position lies at 03:04 (046) +58, which is located where the borders of Perseus, Cassiopeia, and Camelopardalis meet. This position is also three degrees northwest of the fourth magnitude star Eta Persei. While the radiant lies above the horizon for most observers in the northern hemisphere, it is best placed during the last few hours before dawn. Due to the high northern declination (celestial latitude) of the radiant, rates seen from the Southern Hemisphere are very low when compared to those seen north of the equator. At 59 km/sec., Perseid meteors are swift, often exhibiting persistent trains. Sporadic rates are now rising for observers in the northern hemisphere and falling steadily for those located south of the equator. One would expect to see perhaps twelve random meteors during the last hour before dawn from rural observing sites in the northern hemisphere. During the first dark hour after the end of evening twilight, perhaps three random meteors can be seen per hour. Sporadic rates increase as the night progresses so rates seen near midnight would be near six per hour. As seen from the southern hemisphere late morning rates would now be near ten per hour. During the first dark hour after the end of evening twilight, perhaps two random meteors can be seen per hour, increasing to five by midnight. Kappa Cygnid (KCG) 18:52 (284) +58 Northern Hemisphere - 1 Southern Hemisphere - <1 Alpha Capricornid (CAP) 21:20 (320) -05 Northern Hemisphere - <1 Southern Hemisphere - <1 Antihelion (ANT) - 22:08 (332) -09 Northern Hemisphere - 2 Southern Hemisphere - 2 Delta Aquariids (SDA) 23:20 (350) -13 Northern Hemisphere - 1 Southern Hemisphere - 2 Perseids (PER) 03:04 (046) +58 Northern Hemisphere - 40 Southern Hemisphere - 5 Clear Skies! Robert Lunsford International Meteor Organization ” 7:40:25 AM 8/10/07 “ ![]() 9:08:35 AM 8/10/07 5:01:43 AM 8/11/07 “ok...so I go outside early this am and look NE????lol.....” 5:09:04 AM 8/11/07 “YES.... while it's still dark! LOL” 5:26:06 AM 8/11/07 “ne sky rising at 11pm with best seeing around 2am weather permitting.” 5:31:07 AM 8/11/07
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