(meteorobs) Possible Kappa Cygnid outburst, continued
jarnac
observe at jarnac.org
Sat Jul 18 12:49:04 EDT 2015
Dewar friends,
We could not get a repeat last night due to weather. But there were
also a number of early Delta Aquarids. One of them, from a few
nights ago, was very bright, possibly minus 8 or more. I did not see
the meteoir but I did catch the bolide flash which alerted me at my
telescope, and I witnessed the train for about a minute.
Incidentally, Ed's last name is correctly Guenther. Sorry.
Perhaps we will have other reports as the summer meteor showers
continue to intensify.
David H. Levy
At 05:06 PM 7/17/2015, you wrote:
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>Today's Topics:
>
> 1. Meteor Activity Outlook for July 18-24, 2015 (Robert Lunsford)
> 2. Meteor Obs. 7/17/15 - Mathias, WVa (george)
> 3. Possible Kappa Cygnid outburst (jarnac)
> 4. Re: Possible Kappa Cygnid outburst (Michael Boschat)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Fri, 17 Jul 2015 13:14:06 -0700
>From: Robert Lunsford <lunro.imo.usa at cox.net>
>Subject: (meteorobs) Meteor Activity Outlook for July 18-24, 2015
>To: Meteor science and meteor observing <meteorobs at meteorobs.org>
>Message-ID: <20150717161406.TGYKO.172630.imail at fed1rmwml113>
>Content-Type: text/plain; charset=utf-8
>
>During this period the moon reaches its first quarter phase on
>Thursday July 23rd. At this time the moon is located 90 degrees east
>of the sun and sets near midnight local daylight time (LDT). This
>weekend the waxing crescent moon will set during the late evening
>hours and will not interfere with meteor observing. The estimated
>total hourly meteor rates for evening observers this week is near 4
>no matter your location. For morning observers the estimated total
>hourly rates should be near 13 no matter your location. 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. Note that the hourly rates listed below
>are estimates as viewed from dark sky sites away from urban light
>sources. Observers viewing from urban areas will see less activity
>as only the brightest meteors will be visible from such locations.
>
>The radiant (the area of the sky where meteors appear to shoot from)
>positions and rates listed below are exact for Saturday night/Sunday
>morning July 18/19 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. Vie
> wing there 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.
>
>These sources of meteoric activity are expected to be active this week.
>
>The Alpha Capricornids (CAP) are active for over a month lasting
>from July 6 through August 10. Unlike most showers, the Alpha Caps
>have a plateau-like maximum with maximum activity lasting from July
>25-30. Since maximum activity is still a week away, hourly rates
>will be near 1 no matter your location. The radiant is currently
>located at 19:52 (298) -12. This area of the sky is located on the
>Aquila/Sagittarius border, 5 degrees west of the 4th magnitude star
>known as Algedi (Alpha Capricornii). The radiant is best placed near
>0100 local daylight time (LDT) when it lies on the meridian and is
>highest in the sky. With an entry velocity of 22 km/sec., the
>average Alpha Capricornid meteor would be of slow velocity.
>
>The center of the large Anthelion (ANT) radiant is currently located
>at 20:36 (309) -17. This position lies in western Capricornus, 3
>degrees southeast of the 3rd magnitude star known as Dabih (Beta
>Capricorni). These meteors may be seen all night long but the
>radiant is best placed near 0200 LDT when it lies on the meridian
>and is positioned highest in the sky. Due to the large radiant area,
>meteors from this source may also appear to radiant from the
>constellation of Microscopium, southern Aquila, western Aquarius,
>and eastern Sagittarius as well as Capricornus. Rates at this time
>should be near less than 1 per hour as seen from the northern
>hemisphere and 1 per hour as seen from south of the equator. With an
>entry velocity of 30 km/sec., the average Anthelion meteor would be
>of slow velocity.
>
>The Sigma Capricornids (SCA) were discovered by Zdenek Sekanina and
>are active for a month lasting from June 19 through July 24. Maximum
>occurred on June 27th. The radiant is currently located at 21:36
>(324) -02. This area of the sky is located in northern Aquarius, 3
>degrees north of the 3rd magnitude star known as Sadalsuud (Beta
>Aquarii). The radiant is best placed near 0300 LDT when it lies on
>the meridian and is highest in the sky. Rates at this time should be
>less than 1 per hour no matter your location. With an entry velocity
>of 42 km/sec., the average Sigma Capricornid meteor would be of
>medium velocity.
>
>Activity from the Delta Aquariids (SDA) will begin next week from a
>radiant located at 22:08 (332) -19. This position is located in
>southwestern Aquarius, 10 degrees southwest of the third magnitude
>Delta Aquarii. Maximum activity is expected on July 29th. Hourly
>rates will depend on your latitude. Those viewing from the southern
>tropics will see the best rates of near 1-2 per hour. Rates seen
>from mid-northern latitudes will range from 0-1 per hour, depending
>on the haziness of your skies. The radiant rises near 2200 (10pm)
>LDT for observers located in the mid northern latitudes, but is best
>placed near 0300 LDT, when it lies highest in the sky. With an entry
>velocity of 42 km/sec., most activity from this radiant would be of
>average velocities.
>
>The Piscids Austrinids (PAU) are a minor shower not well seen from
>the northern hemisphere. This radiant is active from July 15 through
>August 10. Maximum activity occurs on July 28 when the zenith hourly
>rate (ZHR) may reach five. These rates are only seen from the
>southern hemisphere where the radiant passes overhead. From
>mid-northern latitudes, rates of one per hour at maximum are usually
>seen. The radiant is currently located at 22:16 (334) -34. This
>position lies in central Piscis Austrinus, 9 degrees southwest of
>the bright first magnitude star Fomalhaut (Alpha Piscis Austrinus).
>The radiant is best placed near 0300 LDT, when it lies highest in
>the sky. With an entry velocity of 35km/sec., most activity from
>this radiant would be of average velocities.
>
>The July Pegasids (JPE) are active from a radiant located at 23:40
>(355) +13. This area of the sky is located in southern Pegasus,
>between the 3rd magnitude star Algenib (Gamma Pegasi) and the 2nd
>magnitude star known as Markab (Alpha Pegasi). This area of the sky
>is best seen during the last dark hour before dawn when the radiant
>lies highest in a dark sky. Maximum activity occurred on July 10th
>so rates this weekend are expected to be near less than 1 per hour
>no matter your location. With an entry velocity of 68 km/sec., the
>average meteor from this source would be of swift velocity.
>
>The Perseids (PER) are active from a radiant located at 00:40 (010)
>+52. This area of the sky lies in southern Cassiopeia, 5 degrees
>south of the 2nd magnitude star known as Schedar (Alpha
>Cassiopeiae). Since the maximum is nearly a month away, rates are
>expected to be low, probably around 2 per hour during the late
>morning hours. Observers south of the equator will have difficulty
>seeing any activity as the radiant lies low in the north at best.
>With an entry velocity of 61 km/sec., the average Peresid meteor
>would be of swift speed.
>
>The Tau Cetids (TCT) were discovered by Sirko Molau using data from
>the IMO video database. This activity is only active on 4 nights
>with maximum activity occurring on the 21st. The radiant is located
>at 01:20 (020) -18, which places it in southern Cetus, 7 degrees
>east if the 2nd magnitude star known as Deneb Kaitos (Beta Ceti).
>Rates would most likely be less than 1 as seen from the northern
>hemisphere and perhaps 1 per hour for observers located south of the
>equator. These meteors would be best seen during the last hour
>before dawn when the radiant lies highest in a dark sky. With an
>entry velocity of 65 km/sec., the average meteor from this source
>would be of swift velocity.
>
>The Phi Piscids (PPS) were discovered by Dr. Peter Brown in his
>meteoroid stream survey using the Canadian Meteor Orbit Radar. This
>shower was later verified by Dr. Peter Jenniskens and David Holman
>using data from the CAMS network in northern California. These
>meteors are active from June 11 through July 25 with maximum
>activity occurring on July 2nd. The current position of the radiant
>is 01:56 (029) +34. This position lies in the constellation of
>Triangulum, 5 degrees north of the 3rd magnitude star known as Ras
>al Muthallah (Alpha Trianguli). Rates are currently expected to be
>near 1 per hour for observers in the northern hemisphere and less
>than 1 for observers located south of the equator. With an entry
>velocity of 68 km/sec., the average Phi Piscid meteor would be of swift speed.
>
>Activity from the c-Andromedids (CAN) is ending this weekend. The
>radiant currently lies at 02:48 (042) +50, which places it in
>western Perseus, 5 degrees west of the 2nd magnitude star known as
>Mirfak (Alpha Persei). This area of the sky is best seen during the
>last dark hour before dawn when the radiant lies highest in a dark
>sky. Observers in the northern hemisphere are better situated to
>view this activity as the radiant rises much higher in the sky
>before dawn as seen from northern latitudes. Current rates would be
>less than one per hour no matter your location. With an entry
>velocity of 60 km/sec., the average meteor from this source would be
>of swift velocity.
>
>As seen from the mid-northern hemisphere (45N) one would expect to
>see approximately 8 sporadic meteors per hour during the last hour
>before dawn as seen from rural observing sites. Evening rates would
>be near 3 per hour. As seen from the tropical southern latitudes
>(25S), morning rates would be near 7 per hour as seen from rural
>observing sites and 3 per hour during the evening hours. Locations
>between these two extremes would see activity between the listed figures.
>
>The list below offers the information from above in a condensed
>form. Rates and
>positions are exact for Saturday night/Sunday morning unless specified.
>
>Alpha Capricornids (CAP) - 19:52 (298) -12 Velocity - 22km/sec.
>Northern Hemisphere - 1 per hr. Southern Hemisphere - 1 per hr
>
>Anthelion (ANT) - 20:36 (309) -17 Velocity - 30km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - 2 per hr
>
>Sigma Capricornids (SCA) - 21:36 (324) -02 Velocity - 42km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - <1 per hr
>
>Delta Aquariids (SDA) - 22:08 (332) -19 Velocity - 42km/sec.
>Northern Hemisphere - 1 per hr. Southern Hemisphere - 2 per hr
>
>Piscids Austrinids (PAU) - 22:16 (334) -34 Velocity - 35km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - <1 per hr
>
>July Pegasids (JPE) - 23:40 (355) +13 Velocity - 68km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - <1 per hr
>
>Perseids (PER) - 00:40 (010) +52 Velocity - 61km/sec.
>Northern Hemisphere - 2 per hr. Southern Hemisphere - <1 per hr
>
>Tau Cetids (TCT) - 01:20 (020) -18 Velocity - 65km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - <1 per hr
>
>Phi Piscids (PPS) - 01:56 (029) +34 Velocity - 68km/sec.
>Northern Hemisphere - 1 per hr. Southern Hemisphere - <1 per hr
>
>c-Andromedids (CAN) - 02:48 (042) +50 Velocity - 60km/sec.
>Northern Hemisphere - <1 per hr. Southern Hemisphere - <1 per hr
>
>Clear Skies!
>Robert Lunsford
>American Meteor Society
>
>
>
>
>------------------------------
>
>Message: 2
>Date: Fri, 17 Jul 2015 17:07:32 -0400
>From: george <gwgliba at gmail.com>
>Subject: (meteorobs) Meteor Obs. 7/17/15 - Mathias, WVa
>To: Meteor science and meteor observing <meteorobs at meteorobs.org>
>Message-ID: <F20F2304-58E7-44B2-98DF-F2686432E9C4 at gmail.com>
>Content-Type: text/plain; charset="us-ascii"
>
>
>
> Screech Owl Hill Observatory, Mountain Meadows
> Mathias, West Virginia - July 17, 2015
>
>We finally had a nice mostly clear night after several days of on
>and off rain.
>I saw my first Perseid (PER) and Southern Delta Aquarid (SDA) meteors for
>the season, as well as activity from several minor meteor
>radiants. The Milky
>Way was beautiful as always. No meteors brighter than 0 magnitude was seen.
>that one was a long trailed SDA that left a 3 second train. I only
>saw one Phi
>Piscid (PPS), but it was 1st magnitude and also had a nice 3 second train.
>One of the two Antihelion (ANT) meteors seen had a beautiful green nebulous
>trail. Another strange nebulous meteor that I see on rare occasions.
>
> Date Time (UT) FOV LM Obst.
>7/17/15 4:05-5:05 22.3+47 6.5 10%
>
>CAP ANT SCA SDA JPE PER PPS CAN SPO Total
> 4 1 2 1 0 1 0 2
> 7 18
>
>
> Date Time (UT) FOV LM Obst.
>7/17/15 5:05-6:05 23.3+47 6.5 10%
>
>CAP ANT SCA SDA JPE PER PPS CAN SPO Total
> 0 1 0 2 2 1 1 1
> 8 16
>
>Magn. Distributions July 17, 2015 - 04:05-06:05 UT - LM=6.5, 10% Obst.
>
> 0 1 2 3 4 5 Total Ave.
>CAP 0 0 1 1 1 1 4 3.5
>ANT 0 1 0 1 0 0 2 2.0
>SCA 0 0 0 2 0 0 2 3.0
>SDA 1 0 0 2 0 0 3 2.0
>JPE 0 0 1 0 1 0 2 3.0
>PER 0 0 1 0 1 0 2 3.0
>PPS 0 1 0 0 0 0 1 1.0
>CAN 0 1 1 1 0 0 3 2.0
>SPO 0 1 3 4 2 5 15 3.5
>
>
>Starry Skies,
>GWG
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>------------------------------
>
>Message: 3
>Date: Fri, 17 Jul 2015 16:47:52 -0700
>From: jarnac <observe at jarnac.org>
>Subject: (meteorobs) Possible Kappa Cygnid outburst
>To: meteorobs at meteorobs.org
>Message-ID:
> <20150717234757.94D9393B455 at u15354731.onlinehome-server.com>
>Content-Type: text/plain; charset="us-ascii"; format=flowed
>
>Dear friends,
>
>I know that it is way early for the maximum of the Kappa Cygnids (end
>of the month), but on the evening of July 16/17 threre appeared to be
>unusually intense activity. From our Adirondack astronomy
>Retreat Ed Gordon counted more than thirty meteors, mostly Kappa
>Cygnids, over a one to two hour time span. I was not observing
>meteors at the timew but I noticed at least five meteors during the
>night, of which one wss a bright Kappa Cygnid.
>
>David H. Levy
>
>
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>
>------------------------------
>
>Message: 4
>Date: Sat, 18 Jul 2015 00:06:31 +0000
>From: Michael Boschat <andromed at dal.ca>
>Subject: Re: (meteorobs) Possible Kappa Cygnid outburst
>To: Meteor science and meteor observing <meteorobs at meteorobs.org>
>Message-ID:
>
><BLUPR03MB21691FD48D1DDD2CE6494BCA5870 at BLUPR03MB216.namprd03.prod.outlook.com>
>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Hi;
>
> Overcast here. but today between 1800-2000 UT had a few small
> returns on the meteor radio at 77.251 MHz.
>
>1800-1900 = 13
>1900-2000 = 14
>
>
>Clear skies
>----------
>Michael Boschat
>Halifax Center - Royal Astronomical Society of Canada
>Astronomy page: http://www.chebucto.ns.ca/~aa063
>
>
>------------------------------
>
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