Geosats obs from 51 deg N

From: Bram Dorreman (bram.dorreman@skynet.be)
Date: Fri Oct 15 2004 - 18:41:46 EDT

  • Next message: Jeff Umbarger: "Online Star Chart"

    This year I was lucky in the optimal night, almost clear from evening till
    morning.
    The night before I could observe during some hours. I used a 15 x 80
    binoculars on atripod.
    In the "long" night it happened twice that I saw three geosats
    simultaneously by
    unaided eye: the constellation of Cetus was often provided with one or more
    extra stars.
    
    Here are my brightness estimates. I've ordered the observations by
    longitude.
    
    Night of 2004 October 11/12
    
    int.id. catnr  name           maxmag long.
    
    98-006 B 25153 Inmarsat 3 5    8.2 25.1 E
    94-070 A 23331 Astra 1D        4.0 23.6 E
    93-031 A 22653 Astra 1C        6.2 19.2 E
    01-025 A 26853 Astra 2C        9.0 19.2 E
    91-015 A 21139 Astra 1B        9.0 19.1 E
    97-076 A 25071 Astra 1G        8.2 19.1 E
    98-056 A 25491 Eutelsat W2     4.1 16.1 E
    01-005 A 26694 Sicral          5.3 16.0 E
    96-067 A 24665 Hot Bird 2      8.5 13.2 E
    98-013 A 25237 Hot Bird 4      3.7 13.1 E
    04-008 A 28187 Eutelsat W3A    5.8  7.1 E
    98-056 B 25492 Sirius 3        4.4  5.0 E
    97-071 A 25049 Sirius 2        5.3  4.9 E
    02-035 A 27460 Stellat 5       5.9  4.9 E
    03-059 A 28132 Amos 2          5.6  4.0 W
    
    Night of 2004 October 12/13
    int.id.  catnr name          maxmag long.
    03-060 A 28134 Express-AM 22   4.8 53.0 E
    03-053 A 28089 Yamal 201       5.0 49.1 E
    03-018 A 27807 Gsat 2          7.8 48.0 E
    99-018 A 25673 Eutelsat W3     7.4 47.6 E
    00-068 A 26590 EuropeStar 1    7.7 45.0 E
    96-040 B 23949 Turksat 1C      8.5 42.2 E
    01-002 A 26666 Turksat 2A      8.5 42.0 E
    02-029 A 27441 Ekspress-A 4    7.9 40.1 E
    00-028 A 26369 Eutelsat W4     4.7 36.2 E
    00-019 A 26243 Sesat           4.7 35.9 E
    91-055 A 21653 Intelsat 6 5    8.5 33.1 E
    94-049 B 23200 Turksat 1B      8.2 31.4 E
    96-063 A 24652 Arabsat IIB     7.7 30.5 E
    01-011 A 26719 Eurobird        5.4 28.6 E
    98-050 A 25462 Astra 2A        4.7 28.3 E
    00-081 A 26638 Astra 2D        7.7 28.3 E
    00-054 A 26494 Astra 2B          ? 28.2 E
    98-006 B 25153 Inmarsat 3 5    5.0 25.1 E
    94-070 A 23331 Astra 1D        5.9 23.6 E
    93-031 A 22653 Astra 1C        8.4 19.2 E
    01-025 A 26853 Astra 2C        8.4 19.2 E
    91-015 A 21139 Astra 1B        8.4 19.1 E
    98-056 A 25491 Eutelsat W2     4.2 16.1 E
    01-005 A 26694 Sicral          6.0 16.0 E
    95-016 B 23537 Hot Bird 1      3.2 13.2 E
    96-067 A 24665 Hot Bird 2      6.4 13.2 E
    97-049 A 24931 Hot Bird 3      5.4 13.2 E
    04-008 A 28187 Eutelsat W3A    9.0  7.1 E
    98-056 B 25492 Sirius 3        8.2  5.0 E
    97-071 A 25049 Sirius 2        5.0  4.9 E
    95-060 A 23712 Milstar 2       4.8  1.1 E
    97-025 A 24808 Thor 2          8.5  0.7 W
    98-035 A 25358 Thor 3          8.5  0.8 W
    04-022 A 28358 Intelsat 10 2   8.5  1.0 W
    96-030 B 23865 Amos 1          5.4  4.0 W
    03-059 A 28132 Amos 2          3.9  4.0 W
    02-035 A 27460 Stellat 5       4.1  4.9 W
    95-067 A 23730 Telecom 2C      6.3  5.2 W
    00-031 A 26378 Ekspress-A 3    5.9 10.9 W
    02-040 A 27508 Atlantic Bird 1 4.7 12.6 W
    96-053 A 24307 Inmarsat 3 2    7.7 15.5 W
    01-024 A 26824 Intelsat 9 1    7.7 18.0 W
    02-019 A 27414 NSS 7           3.3 22.0 W
    02-027 A 27438 Intelsat 9 5    3.6 24.5 W
    03-007 A 27683 Intelsat 9 7    3.3 27.5 W
    02-044 A 27528 Hispasat 1D     3.6 30.0 W
    00-007 A 26071 Hispasat 1C     3.3 30.1 W
    97-009 A 24742 Intelsat 8 1      ? 31.5 W
    98-002 A 25134 Skynet 4D       5.8 34.2 W
    02-016 A 27403 Intelsat 9 3    3.6 34.5 W
    
    The identification of the Astra's on 19.2E
    may be incorrect. This is also true for the
    Amos'es.
    
    I got the impression that most objects are brighter
    when emersed and sometiems the max. brightness is
    more than 2.5  from the shadow.
    (I used program Highecl to identify the objects).
    
    Bram Dorreman
    COSPAR 4160
    51 16' 45.5" N  5 28' 36.6" E (WGS84) 35 m
    
    
    -------------------------------------------------------------------------
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:  
    http://www.satobs.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Fri Oct 15 2004 - 18:56:39 EDT