2007南十字英仙座流星雨青海湖观测简报

情况:
8月11日我和SSRY在西宁集合,12日到青海湖151基地进行观测,12号晚上和13号晚上进行了观测.

总结:
12号晚上天气理想,极限6.8等,2200到13号凌晨0300点共观测群内流星400余颗,观测天区以夏季大三角以北为主,初步判断2400-0300这个时间段超过了ZHR120

13号晚上天气不过理想,1130到14号凌晨0200观测200颗左右,0200后停止观测,感觉没有出现预报的2300的高峰.



重要发现:
在这两个晚上都观测到从天鹅座辐射出来的流星,约每小时20颗左右,经查资料没有相关预报和观测报告,请大家注意监测.

[ 本帖最后由 littlePig 于 2007-8-19 10:42 编辑 ]

哎！你就爽了。俺们什么也没有看到。

另外，天鹅座流星雨都被你看到，实在是太强了！

[ 本帖最后由 weiguo1688 于 2007-8-16 00:49 编辑 ]

咱们这儿下雨一周……

下雨，下雨，唉……
真是::ganga::

KCG活动还是蛮强的说，没什么奇怪的……

CMCN已经引述了CBET的报道称KCG有爆发，我的答案是参考了这一新闻的。

转一下CBET的全文（请勿随便转载—— CBET有转载限制！）：

                                                  Electronic Telegram No. 1055
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


KAPPA CYGNIDS 2007
     P. Jenniskens, SETI Institute, notes that unusual rates of bright
kappa Cygnid meteors were reported by numerous observers in the period
Aug. 10-19.  Many kappa Cygnids exhibited irregular light curves and
end flares.  The bright meteors were recorded by the Spanish Meteor Network
(see report by Trigo-Rodriguez et al., below).  Around Aug. 13d00h UT,
K. Miskotte and C. Johannink, Dutch Meteor Society (DMS), calculated that
the kappa Cygnid rate was about ZHR = 5 meteors per hour but noticed
unusually bright meteors; they photographed a kappa Cygnid of magnitude -6
from near Grevesmuehlen, Germany.  Activity stretched out for several days.
Bright kappa Cygnids were noticed previously in 1978, 1985, 1993, and 1999
(the 1993 event is detailed in Chapter 24 of Jenniskens 2006, *Meteor Showers
and their Parent Comets*, Cambridge University Press).  On Aug. 17d03h57m
UT, P. Martsching (observing from Story County, IA, U.S.A.) witnessed an
orange-then-white kappa Cygnid of mag -5, and a -4 kappa Cygnid of mag -4
at Aug. 17d05h49m.  On Aug. 18d21h27m50s, S. Dijkstra (DMS) photographed a
white-yellow kappa Cygnid of mag -8 with a persistent train that lasted
minutes.  On Aug. 19d21h38m, Miskotte recorded a kappa Cygnid of mag -4.

     J. M. Trigo-Rodriguez, Institut d'Estudis Espacials de Catalunya,
Consejo Superior de Investigaciones Cientificas, Bellaterra (Barcelona);
J. M. Madiedo, University of Huelva; and A. J. Castro-Tirado and S. Vitek,
Instituto de Astrofisica de Andalucia, Consejo Superior de Investigaciones
Cientificas, report that unusual activity of bright kappa-Cygnid meteors
was recorded by the all-sky CCD and video cameras of the Spanish Meteor
Network under dark skies, mainly during the nights of Aug. 12-13 and
13-14, but bright fireballs were also reported during the activity period
of this minor shower.  According to the data obtained at Catalonia and
Andalusia, this unusual activity peaked around Aug. 13d00h (solar longitude
139.80 deg) with ZHR = 19 +/- 4 (magnitude distribution index chi = 1.6 +/-
0.5).  The apparent radiant was located at R.A. = 292 +/- 2 deg, Decl. =
+58 +/- 1 deg, on the basis of ten single-station meteors that appeared
near the radiant.  Additional clues on the origin of this activity will be
obtained when the double-station meteors are processed.  An extraordinary
fireball of absolute mag -9 was imaged from Madrid by J. Izquierdo and J.
Zamorano (Universidad Autonoma de Madrid) on Aug. 13d4h14m55s +/- 8s
UT.  B. Troughton (Sociedad Malaguena de Astronomia) also reported enhanced
fireball activity imaged using all-sky cameras operated from Malaga.
Activity during other nights was below normal levels, but with a
background of bright fireballs, many of which exhibited flares and
reactivation in the last phases of their luminous paths, suggesting
weak and relatively young cometary material.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2007 CBAT
2007 September 10                (CBET 1055)              Daniel W. E. Green

引用: 广东星船 在文中说道:


QUOTE:
原帖由 小龙·哈勃 于 2007-8-16 09:53 发表
KCG活动还是蛮强的说，没什么奇怪的……
天鹅座κ(KCY)流星雨的辐射点是很靠近天龙座的，而且极大时ＺＨ...

http://cmcn.y234.cn/meteor/visua ... cygnids/history.htm
两者其实是一码事，但现在普遍称为KCY。
确定辐射点的话要作图。

KCY的ZHR虽小，但r值很高，因此观测到亮流星很正常。不过今年看来是有个小的outburst。

天鹅座这个点辐射出来的流星在银河里往南出现的轨迹很难和英仙区分,但后来发现天鹅的较快且暗,英仙的速度不到50且较亮.

试着译一下：

世界时8月10日到19日，天鹅座流星群有突发的出现，流星数量上虽然没有特别的多，但是有许多是明亮的火球（火流星），欧洲等地有人目击到。

以下只译了个大意：

CBET的报道，天鹅座k流星群，出现峰时比预期有些提前，每小时可见数个，偶尔有明亮的爆发流星出现。
荷兰，美国，西班牙等地爱好者均有观测到 -4 到 -9 等火流星的报告，峰值时间在13日前后，大部分火流星有爆发现象，轨迹末端有光亮增强。

[ 本帖最后由 星影 于 2007-9-16 18:27 编辑 ]