Standard magnitudes for Okean satellites

Rainer Kracht (R.Kracht@t-online.de)
Mon, 1 Jan 96 17:19 +0100

 Standard magnitudes for Okean satellites
 ----------------------------------------

 From Russell's observations (1980 Jan 01 to 1995 Nov 30) I have derived
 standard magnitudes (1000 km, 90 deg) for ten Okean satellites.

 OKEAN-E
 COSMOS 1076     1979-011A    78   5.48 +/- 0.13   0.0116 +/- 0.0044
 COSMOS 1151     1980-005A    26   5.66 +/- 0.18   0.0017 +/- 0.0061
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 ALL OKEAN-E                 104   5.53 +/- 0.11   0.0093 +/- 0.0037


 OKEAN-OE
 COSMOS 1500     1983-099A    30   5.59 +/- 0.19   0.0175 +/- 0.0054
 COSMOS 1602     1984-105A     6   6.47 +/- 0.12   0.0219 +/- 0.0032
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 ALL OKEAN-OE                 36   5.75 +/- 0.17   0.0187 +/- 0.0048


 OKEAN-O1
 COSMOS 1766     1986-055A    18   4.89 +/- 0.22  -0.0011 +/- 0.0061
 COSMOS 1869     1987-062A     9   3.81 +/- 0.54  -0.0267 +/- 0.0110
 OKEAN-O1 3      1988-056A    20   5.30 +/- 0.14   0.0187 +/- 0.0047
 OKEAN-O1 5      1990-018A     8   5.90 +/- 0.08   0.0227 +/- 0.0028
 OKEAN-O1 6      1991-039A     2   6.19 +/- 0.00   0.0137 +/- 0.0000
 OKEAN-O1 NO. 7  1994-066A    10   5.03 +/- 0.19  -0.0004 +/- 0.0073
 -------------------------------------------------------------------
 ALL OKEAN-O1                 67   5.26 +/- 0.10   0.0077 +/- 0.0028

 ALL OKEAN-O                 103   5.42 +/- 0.09   0.0112 +/- 0.0025

 ALL OKEAN                   207   5.48 +/- 0.07   0.0107 +/- 0.0022


 column 1 : name
 column 2 : international designation
 column 3 : number of observations
 column 4 : standard magnitude
 column 5 : phase coefficient

 Worldwide Satellite Launches has for the Okean-O satellites:
 "Bus of satellite is conical, with a base diameter of 1.4 metres and a
 height of 3 metres: two vanes of solar panels are deployed plus the radar
 and other equipment."

 There is a drawing, which shows an Okean-O satellite in SPACEFLIGHT
 Vol. 32, p. 239 (July 1990). The text says that the side-looking radar
 failed to deploy on Kosmos 1869.

 Mass of an Okean-O satellite is 1950 kg (Jonathan's Space Report #214).


 Rainer Kracht   1996 Jan 01
 0412188960-0001@t-online.de
 R.Kracht@t-online.de