Geminidi 2000

meteori
Geminidi 2000

U Petnici od 12.-16. decembra odrzana je akcija posmatranja meteora, ovog puta to su bili Geminidi. Nebo je bilo delimicno oblacno (ipak mnogo promenljivo), mesec je bio pun (i to u Geminidima) ali ipak smo uspeli dobar deo da vidimo. Noci 12-13 ZHR je bio oko 45 a 13-14 oko 110. Posmatralo nas je 4 (Kristina, Savan, Acim i ja). U maksimumu sam uspela da vidim 76 meteora za 5h efektivnog posmatranja, a najveca magnituda je bila -5 !

Pozdrav

Marina Radujkov
marinaiana@yahoo.com

O Geminidima vise u AM:
Nikola Biliskov: Prirucnik za vizualno promatranje meteora Geminidi

O rezultatima osmatranja ove godine sa stranice IMO (http://www.imo.net/news/news.html):

Geminids 2000

The 2000 return of the strong shower reached its maximum under poor (moonlit) circumstances, restraining many observers from meteor watches. The currently available data show no unusual activity level or any peculiarities, but the near-maximum period is not (yet) well covered with data. So the list given below is a first, preliminary information only. Most observations were carried out under very poor skies. So a maximum correction factor of 7 was allowed, and all observations with the radiant more than 25 deg above the horizon were included. Although the (northern) nights are long and the radiant is above the horizon for (almost) the entire night, there are gaps which may become filled with further data. A list of observations was published by the NMS, but has not been included here at this stage.

We are very grateful to the following 17 observers who sent in their reports in time for this first activity overview:

DETPE Peter Detterline (USA)
GEOPE Petros Georgopoulos (Greece)
GLIGE George W. Gliba (USA)
GRALE Lew Gramer (USA)
KULRH Rhishikesh Kulkarni (India)
LI DO Dong Li (China)
LINMI Michael Linnolt (USA)
MCBAL Alastair McBeath (UK)
PUNNI Nilesh Puntambekar (India)
PURTU Tushar Purohit (India)
RENJU Jurgen Rendtel (Germany)
SHAJA Jason Shanley (USA)
SHASH Shashank Shalgar (India)
SPAGE George Spalding (UK)
TAIRI Richard Taibi (USA)
TRIJO Josep Trigo-Rodriguez (Spain)
WANSO Song Wanfang (China)

------------------------------------------------------
Date   Time (UT)  Sollong nObs nIND  nGEM     ZHR
------------------------------------------------------
Dec 13    0340    261.43    4    3     15    55 +- 13
    13    0600    261.55    5    5    134    68     8
    13    2000    262.12    3    3     24   118    20
    13    2130    262.19    3    3     86   124    12
    13    2240    262.24    3    3    102   126    11
    14    0310    262.43    3    3    181   122     9
    14    0850    262.67    1    1     10    79    24
    14    2020    263.16    2    2      7    33    10

Solar longitudes refer to equinox J2000.0. nObs is the number of individual observing periods, nIND is the number of individual observers providing them, nGEM is the number of Geminids seen. The population index used was r=2.5. The expectation value of the ZHR,

ZHR = (1 + sum nGEM) / sum(Teff/C),

was used for the averages here, where Teff is the effective observing time and C is the total correction composed of limiting magnitude, clouds, and zenith correction [sin (h_R)]. Times are rounded to the nearest 10 minutes.

information provided by: Jürgen Rendtel (2000/12/18)

vrh