Standard magnitudes for NOAA satellites --------------------------------------- From Russell's observations (1980 Jan 01 to 1995 Nov 30) I have derived standard magnitudes (1000 km, 90 deg) for NOAA satellites. There are 323 observations by Russell, but only 58 are marked steady and in pairs (many flashing or with regular or irregular brightness variations). TIROS N 1978-096A 6 3.09 +/- 0.78 -0.0615 +/- 0.0230 NOAA 06 1979-057A 4 5.95 +/- 1.31 -0.0046 +/- 0.0333 NOAA B 1980-043A 5 5.46 +/- 1.01 0.0447 +/- 0.0330 NOAA 07 1981-059A 8 5.37 +/- 0.24 -0.0304 +/- 0.0114 NOAA 08 1983-022A 2 5.89 0.0705 NOAA 09 1984-123A 14 6.31 +/- 0.15 0.0050 +/- 0.0102 NOAA 10 1986-073A 14 6.53 +/- 0.20 0.0101 +/- 0.0094 NOAA 11 1988-089A 5 5.72 +/- 0.21 0.0011 +/- 0.0108 NOAA 12 1991-032A 0 NOAA 13 1993-050A 0 NOAA 14 1994-089A 0 ------------------------------------------------------------------- ALL 58 6.09 +/- 0.15 0.0157 +/- 0.0062 The RAE-Tables have for TIROS N and NOAA B to 12: Shape and weight (kg): Cylinder+panel, 723 to 735 (in orbit) Size (m) : 3.71 long, 1.88 dia, (6.8 span NOAA 12) World Wide Launches have for NOAA 13 & 14: Shape and weight (kg): Cylinder+panel, 1013 & 1070 (in orbit) Size (m) : 4.18 long, 1.88 dia column 1 : name column 2 : international designation column 3 : number of observations column 4 : standard magnitude column 5 : phase coefficient AMENDMENTS: Ferret-D is the old (western) name of the Russian Sigints with orbits of 635 x 665 km, 82.5 deg. The actual name is Tselina. (Tselina-2 Sigints are at approx. 850 km, 71 deg) Common names for 89-5A and 90-4A (low altitude comsats) are: COSMOS 1992 1989-005A 2 7.18 0.0333 COSMOS 2056 1990-004A 2 6.50 0.0105 Thanks to Jonathan McDowell and Jeff Hunt. Rainer Kracht 1996 Jan 05 0412188960-0001@t-online.de R.Kracht@t-online.de