Koreasat 1

 1995-041A

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Korea Telecom's Mugunghwa-Ho (Koreasat 1) satellite was launched in Aug 1995. One of the Hercules GEM solid rocket motors failed to separate properly from the first stage, causing the first burn of stage 2 to run 35 seconds long. The second stage 2 burn was nominal, although the third burn was only 10s instead of 44s due to fuel depletion. The PAM-D third stage fired to place Mugunghwa in a geostationary transfer orbit, but the result of the earlier failure was that the apogee was 7000 km lower than planned.

Mugunghwa-Ho
Date	Time	Event	Orbit
1995 Aug 5	1110:00	Launch by Delta 7925 (228)	CC LC17B
	1111	GEM x 3 ignite (T+1:06)
	1111	GEM x 6 sep (T+1:06, alt 18 km)
	1112	GEM x 2 sep (T+2:11, alt 53 km)
	1112	GEM motor no. 6 fails to separate
	1114	Stage 1 MECO (T+4:20, alt 109 km)
	1114	Stage 1 sep (T+4:30)
	1114	Stage 2 burn 1 (T+4:34, 117 km)
	1114	Fairing sep (T+4:58, 129 km)
	1120	Stage 2 MECO (T+10:35, 173 km, 35s late), orbit
	1135	Stage 2 burn 2 (T+25:20, 161 km)
	1136	Stage 2 burn 2 MECO after 43s
	1221	Stage 2 burn 3 (T+1:11:33)
	1221	Stage 2 burn 3 depletion, 10s
		Stage 2 sep	108.5 938 x 1373 x 26.7
	1223	PAM-D burn, 88s
	1226	PAM-D sep	532.3 1371 x 29388 x 20.6
	1245	Stage 2 depletion due, failed
1995 Aug 10	1158	Star 30 burn	1074.12 26911 x 29817 x 0.2
1995 Aug 18			1120.0 27961 x 30731 x 0.2
1995 Aug 18			1178.01 29285 x 31854 x 0.2
1995 Aug 19			1274.18 31711 x 33397 x 0.1
1995 Aug 22		LAM burn
1995 Aug 24			1351.27 33216 x 35002 x 0.1
1995 Aug 25	0900?	LAM burn
1995 Aug 27			1406.11 34075 x 36319 x 1.1 GEO 120.0E+7.7E
1995 Aug 29			1438.75 35791 x 35885 x 0.1 GEO 116.2E+0.6W
1995 Sep 5			1436.05 35777 x 35793 x 0.1 GEO 116.0E
1995 Sep 11			GEO 116.0E
1997 Oct 22			1436.13 35778 x 35796 x 0.1 GEO 116.0E
1999 Oct 15			1436.14 35780 x 35794 x 0.0 GEO 116.0E
2000 May 23			1436.11 35755 x 35818 x 0.0 GEO 116.0E
2000 Jul		Leased to Europestar
2000 Aug		Move to 45E; named EuropeStar-B
2004 Dec 12			1436.11 35781 x 35792 x 5.8 GEO 47.3E