Intelsat 402

  1971-006A

---

The first Intelsat IV, F-1, was kept in storage until 1975. F-2 was the first to be launched, and was primary Atlantic satellite from 1971 to Sep 1973 when it was replaced by F7. It remained over the Atlantic in a backup role until it was switched off in 1983.

Intelsat IV F-2
Date	Time	Event	Orbit
1971 Jan 26	0036:03	Launch by Atlas Centaur	CC LC36
		T+2:32 BECO
		T+2:35 Booster sep
		T+3:17 Insulation panels
		T+3:58 SECO, VECO
	0040	T+4:01 Atlas sep
		T+4:12 Centaur MES-1
		T+4:24 Fairing
	0046	T+10:18 Centaur MECO-1	109.83 185 x 2252 x 29.4
	0100?	T+24? Centaur MES-2
	0101?	T+25? Centaur MECO-2
	0104	T+28:47 Centaur sep	640.52 547 x 35924 x 28.2
	0700?	Apo 1
	1800?	Apo 2
1971 Jan 27	0330?	Apo 3 over 125E
1971 Jan 27	0344	AKM 3.6W/d
1971 Mar 26		Operational, AOR Primary with III F7	GEO 24.5W
1971 Apr 22			1436.34 35785 x 35797 x 0.5 GEO 34.3W+0.07E
1971 Oct 25			1436.04 35775 x 35796 x 0.1 GEO 23.4W
1972		AOR Primary
1973 Sep		Replaced by IV F7
1975 Dec			GEO 19W (Morgan)
1976 Feb		AOR Backup	GEO 1W
1977 Feb 26			1435.98 35770 x 35798 x 0.02 GEO 5.1W
1977 Dec			GEO 4W (Morgan)
1978 Mar 27			1436.13 35781 x 35793 x 0.82 GEO 4.8W
1978 Sep		AOR Backup	GEO 4W
1979 Apr		Available as backup	GEO 6W
1979 Oct		mv in	GEO 4W
1979 Oct 12			1435.93 35777 x 35789 x 1.9 GEO 3.6W
1980 Mar 3			1436.02 35779 x 35790 x 2.2 GEO 3.7W
1980 May		mv out	GEO 4W
1980 May		mv in	GEO 1W
1980 May 30			1436.02 35773 x 35796 x 2.3 GEO 0.4W
1982 Aug 9		mv out	GEO 1W
1982 Aug 27			1435.97 35776 x 35792 x 4.0 GEO 0.5E
1982 Oct		Engineering tests	GEO 3E
1982 Dec 19			1436.27 35766 x 35813 x 4.3 GEO 3.83E
1983 May 10			1435.89 35752 x 35812 x 4.6 GEO 4.6E
1983 May 11		Orbit raise 300 km	35969 x 36009
1983 May 11		Decommissioned
1983 May 12			1446.26 35965 x 36005 x 4.6
1985 Nov 16			1456.88 36121 x 36261 x 6.7
1986 Dec 3			1456.90 36125 x 36259 x 7.6
1998 Aug 5			1456.96 36115 x 36272 x 15.1