Crystal 4

 1981-085A

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The fourth KH-11 KENNEN was launched on 1981 Sep 3 by a Titan 3D to a 1009 LTDN SSO, the third mission in the west plane.

KENNEN 4
Date	Time	Event	Orbit
1981 Sep 3	1829	Launch by Titan 23D	V SLC4E
		T+1:49? Stage 1 burn 2:27
		T+1:55 SRM burnout
		T+1:55 SRM sep
		T+4:16 Stage 1 MECO
		T+4:16 Stage 1 sep
		T+4:16 Stage 2 burn
		T+5:05? Fairing
	1836?	T+7:44? Stage 2 MECO
	1837?	T+8:00 Stage 2 sep
1981 Sep 3			92.02 217x527x97.0
1981 Sep 3			92.29 243x526x97.0
1981 Sep 7			92.51 270x521x97.0 from 92.21 242x520
1981 Oct 9			92.60 266x533x97.0 from 92.03 266x478
1981 Oct 30			92.45 253x532x97.0 from 92.32 265x508
1981 Nov 5			92.46 276x511x97.0 from 92.37 276x502
1981 Nov 18			92.61 272x529x97.0 from 92.24 271x493
1981 Nov 29			92.62 277x524x97.0 from 92.03 265x480
1982 Jan 8			92.65 285x521x97.0 from 92.51 277x515
1982 Feb 26			92.77 302x515x97.0 from 92.27 279x489
1982 Mar 17			92.55 286x510x97.0 from 92.40 286x495
1982 Apr 26			92.20 293x469x97.0 from 92.09 282x469
1982 May 10			92.57 294x504x97.0 from 92.12 291x463
1982 Jun 18			92.56 290x506x97.0 from 92.38 290x490
1982 Jul 8			92.55 290x505x97.0 from 92.41 287x495
1982 Sep 16			92.39 297x483x97.0 from 92.22 286x477
1982 Nov 7			92.59 277x522x97.0 from 91.78 278x442
1982 Dec 17			92.32 283x490x97.0 from 92.19 272x488
1983 Feb 26			91.74 278x438x97.0 from ?
1983 Mar 17			92.10 325x427x97.0 from ?
1983 Mar 29			92.61 377x424x97.0 from ?
1984 Apr 30			92.2 369x399x97.0
1984 Nov 23		reentered after 1176d

GFO

 1998-007A

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Geosat Follow On is built by Ball/Boulder for the USN Space and Naval Warfare Systems Command. It uses a modified Techstar bus. Originally planned for Pegasus XL, then LLV-1, finally remanifested to Taurus. Length is 2.7m, Mass is 365 kg. The GFO is the first altimeter satellite for tactical military applications; it will downlink altimeter data to US Navy ships, helping them avoid head-on currents and providing information for anti-submarine warfare. The intended orbit is 800 x 800 km x 108 deg. A year after launch, GFO was still in checkout and due to software problems had not been performing to spec. By late 1999, most problems had been fixed but altimeter accuracy values were still not meeting spec. Operated by SNWSC NSOC/Pt Mugu; it was transferred to NAVSPACECOM/Dahlgren when finally declared operational in early 2001.

The Taurus launch vehicle uses a new, larger payload fairing and the DPAF dual payload fitting. The Taurus 2210 version has the Castor 120 first stage.

Space Command orbital data in March 1998 repeatedly confused GFO (1998-07A) and the DPAF adapter (1998-07C); DPAF is the one in the 101.5 minute orbit.

GFO
Date	Time	Event	Orbit
1998 Feb 10	1320	Launch by Taurus	V 576E
	1321	T+1:22 Stage 1 sep 39 km 2.08 km/s	-6200 x 50?
	1321	T+1:22 Stage 2 burn
	1322	T+2:43 Stage 2 burnout
	1322	T+2:48 Stage 2 sep
	1322	T+2:50 Stage 3 burn 128 km 4.54 km/s	-5100? x 175?
	1322	T+2:53 Fairing sep 131 km 4.57 km/s	-5000? x 180?
	1324	T+4:11 Stage 3 burnout
	1331	T+11:21 Stage 3 sep	-3000? x 770
	1331	T+11:32 Stage 4 burn
	1332	T+12:40 Stage 4 burnout
	1334	T+14:31 GFO sep
	1335	T+15:21 DPAF sep
	1336	T+16:11 FM3 sep
	1337	T+17:31 FM4 sep
	1424		101.30 770 x 869 x 108.0
1998 Feb 11	0356		101.49 780 x 878 x 108.0
1998 Feb 27		Begin orbit lower	101.46 791 x 864 x 108.0
1998 Feb 28		101.26 780 x 856 x 108.0
1998 Mar 3		101.08 779 x 840 x 108.0
1998 Mar 5		100.94 785 x 820 x 108.0
1998 Mar 9		100.64 771 x 806 x 108.0
1998 Apr 1			100.68 779 x 802 x 108.0
1998 Apr 12			100.52 778 x 788 x 108.0
1998 Apr 18			100.59 781 x 791 x 108.0
1998 May 1			100.59 785 x 787 x 108.0