(meteorobs) Possible Kappa Cygnid outburst, continued
george
gwgliba at gmail.com
Sat Jul 18 13:47:47 EDT 2015
Hi David,
I too noticed a few early SDA on the 17th, one with a nice train, but
none last night, but the conditions last night were marginal at best.
Starry Skies,
GWG
On Jul 18, 2015, at 12:49 PM, jarnac <observe at jarnac.org> wrote:
> 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:
>> Send meteorobs mailing list submissions to
>> meteorobs at meteorobs.org
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>> http://lists.meteorobs.org/mailman/listinfo/meteorobs
>> or, via email, send a message with subject or body 'help' to
>> meteorobs-request at meteorobs.org
>>
>> You can reach the person managing the list at
>> meteorobs-owner at meteorobs.org
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of meteorobs digest..."
>>
>>
>> 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
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL:
>> http://lists.meteorobs.org/pipermail/meteorobs/attachments/20150717/dee23085/attachment-0001.html
>>
>>
>> ------------------------------
>>
>> 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
>>
>>
>> ---
>> This email has been checked for viruses by Avast antivirus software.
>> http://www.avast.com
>>
>>
>>
>> ------------------------------
>>
>> 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
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> meteorobs mailing list
>> meteorobs at meteorobs.org
>> http://lists.meteorobs.org/mailman/listinfo/meteorobs
>>
>>
>> End of meteorobs Digest, Vol 50, Issue 5
>> ****************************************
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> http://www.avast.com
>
> _______________________________________________
> meteorobs mailing list
> meteorobs at meteorobs.org
> http://lists.meteorobs.org/mailman/listinfo/meteorobs
More information about the meteorobs
mailing list