Symphonie 1

  1974-101A

---

The Symphone MV1 (flight model 1) satellite was launched on 1974 Dec 19 from Cape Canaveral. Launch was successful although stage 2 telemetry failed 12s after separation from stage 3. A 19m50s burn of the S400 apogee motor at 6th apogee circularized the orbit. Control was swapped every 6 months between GSOC and CNES/Toulouse.

Symphonie MV1
Date	Time	Event	Orbit
1974 Dec 19	0239:00	Launch by Delta 2914	CC LC17
		T+0:38 SRM 1-6 out
		T+0:39 SRM 7-9 on
		T+1:17 SRM 7-9 out
		T+1:27 SRM 1-9 sep
		T+3:48 MECO
		T+3:53 VECO
		T+3:56 St 1 sep
	0243:01	T+4:01 SES-1 4:49
		T+4:50 Fairing
	0247:50	T+8:50 SECO-1 169 km 7.955km/s0 7	170 x 706? x 27.0?
	0303:05	T+24:05 SES-2 17s 137m/s? 372 km
	0303:22	T+24:22 SECO-2 377 km	284 x 1103 x 27.0
	0304:16	T+25:16 St 2 sep
	0304:56	T+25:57 TES 44s
	0305:40	T+26:40 TECO
	0306:55	T+27:54 St 3 sep
		St 3 orbit	423 x 38250 x 12.6 (est)
		St 3 orbit	427 x 38194 x 12.7 (Jun 1976)
1974 Dec 19	0310	683.50 405 x 38245 x 13.2
1974 Dec 21	1715	Apogee firing 19:50	1451.76 34067 x 38119 x 0.56
	1735	LAM firing complete
1974 Dec 23	1620	TCM	1477.98 35068 x 38136 x 0.65
1974 Dec 24	0700?	Despin via yo-yo
	0700	Solar panels deployed
1974 Dec 24?	0438	TCM	1417.71 35088 x 35918 x 0.47
1975 Dec 29	1530	TCM	1427.72 35340 x 35903 x 0.45
1975 Jan 3	0905	TCM	1440.72 35783 x 35967 x 0.46
1975 Jan 6	1512	TCM plane
1975 Jan 8	0313	TCM	1440.43 35772 x 35966 x 0.02
1975 Jan			GEO 11.5W
1977 Mar 4		Mv out	GEO 11.5E
1977 May 26		Mv in for STEP project	GEO 49E
1977 Nov 10			1436.21 35781 x 35795 x 0.1 GEO 49.0E
1979 Apr 18			1436.09 35775 x 35797 x 0.5 GEO 48.7E
1979 Jul 3		Mv out	GEO
1979 Sep 3		Arrive on station	GEO 11.5W
1979 Sep 15			1436.04 35771 x 35799 x 0.8 GEO 11.5W
1981 Oct 23			1435.97 35772 x 35796 x 2.4 GEO 10.6W
1982 Aug 19			1436.15 35777 x 35798 x 3.1 GEO 11.2W
1983 Jul 14			1436.13 35782 x 35792 x 3.9 GEO 11.7W
1983 Aug 3		Raise orbit 80km
1983 Aug 4		end of transmissions
1984 Nov 23			1440.37 35861 x 35878 x 5.0
1989 Dec 23			1440.68 35860 x 35891 x 9.5
1992 Jan 5			1440.36 35855 x 35884 x 11.1
1995 Jul 5			1440.37 35846 x 35894 x 13.4
1998 Sep 14			1440.54 35844 x 35902 x 14.6