Comstar 2

 1976-073A

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The second AT&T Comstar satellite, Comstar D2 or Comstar 202, was launched a few months after the first. By 1986, after transfer of ownership from Comsat to AT&T, the ten year old satellite was maintaining its longitude but letting its inclination increase under the Comsat maneuver technique. The satellite was retired in 1993.

Comstar D2
Date	Time	Event	Orbit
1976 Jul 22	2204:00	Launch by Atlas Centaur
		T+2:20 BECO
		T+2:23 Booster sep
		T+3:05 Insulation panels sep
		T+4:07 SECO, VECO
		T+4:09 Atlas sep
		T+4:19 MES-1
	2214	T+10:20 MECO-1 189 km Vrel = 7.786 km/s	189 x 1810? x 28?
	2228	T+24:43 MES-2 559 km Vrel = 7.372
	2230	T+26:19 MECO-2 627 km Vrel= 9.406
	2232	T+28:34 Centaur sep, 807 km
			636.75 548 x 35729 x 21.8 (TLE)
			552 x 35794 x 21.82 (MOR)
1976 Jul 23	0300?	Apo 1
	1500?	Apo 2
1976 Jul 24	0200?	Apo 3
	1200?	Apo 4
	2200?	Apo 5
1976 Jul 24	2212	AKM burn
1976 Aug		GEO	GEO 95W
1977 Jan 27			1436.09 35758 x 35814 x 0.0 GEO 94.9W
1978 Jan 17			1436.14 35778 x 35796 x 0.0 GEO 95.1W
1979 Jan 4			1436.15 35778 x 35796 x 0.0 GEO 94.9W
1980 Jan 3			1436.12 35775 x 35799 x 0.0 GEO 95.1W
1982 Jan 5			1436.15 35778 x 35796 x 0.1 GEO 95.1W
1983 Oct 22			1436.10 35780 x 35793 x 0.1 GEO 96.0W
1983 Oct 22		mv out of GEO	0.4E/d
1983 Nov 21			1436.16 35785 x 35789 x 0.0 GEO 76.0W
1984 Feb 13			1436.15 35781 x 35793 x 0.1 GEO 76.0W
1985 Sep		Ownership to AT&T
1986 Jan 2			1436.20 35781 x 35796 x 1.5 GEO 76.6W
1987 Jan 3			1436.09 35781 x 35791 x 2.5 GEO 76.5W
1989 Jan 2			1436.15 35779 x 35796 x 4.4 GEO 76.2W
1991 Jan 1			1436.11 35783 x 35790 x 6.2 GEO 76.1W
1992 Dec 31			1436.1 35784 x 35791 x 7.9
1993 Jun 30			1436.2 35785 x 35791 x 8.3
1993 Dec 1			1436.19 35785 x 35791 x 8.6 GEO 76.2W
1993 Dec 19			1436.12 35782 x 35791 x 8.7 GEO 76.1W
1993 Dec 19?		Orbit raised
1993 Dec 25			1440.43 35866 x 35875 x 8.6