IRS-P2

 1994-068A

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The IRS P2 satellite was launched aboard the second PSLV test flight. PSLV-D2 took off from Sriharikota on 1994 Oct 15. The 805 kg satellite entered polar orbit successfully.

IRS-P2
Date	Time	Event	Orbit
1994 Oct 15	0505	Launch by PSLV-D2	SHAR
		T+00:30 PSOM 5-6 ignite
		T+00:54 PSOM 1-4 cutoff
		T+01:18 PSOM 1-4 sep
		T+01:19 PSOM 5-6 cutoff
		T+01:30 PSOM 5-6 sep
	0506	T+01:43 PS-1 cutoff and sep
	0506	T+1:46 PS2 burn 2:29
		T+3:02 Fairing
	0509	T+4:15? PS2 burnout
	0509	PS2 sep
	0509	T+4:21 PS3 burn 78s
	0510	T+5:33? PS3 burnout
	0511	T+6:20 PS3 sep
	0516?	T+9:50 PS4 burn, 397s	-4100? x 818 x 98.7
	0521	T+16:37 PS4 burnout
	0521	T+16:57 PS4 sep
1994 Oct 17			101.74 798 x 883 x 98.7
2000 Sep		end of ops

Navstar 3

 1978-093A

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Navstar 3 was the third GPS development satellite. 

Navstar 3
Date	Time	Event	Orbit
1978 Oct 7	0030?	Launch by Atlas F/SVS	V SLC3
		T+2:04 Booster sep
		T+5:21 SECO
	0036?	T+6:00? Atlas sep	-2622 x 172 (nominal)
	0036?	T+6:21? SVS burn 1 42s?
	0037?	T+7:03? burnout	36? x 172? x 63.1
		T+7:04? sep
		T+7:05? SVS burn 2	163? x 20144?
	0037	T+7:47? burnout
	0041?	SVS-2 sep
1978 Oct 8	1530?	Star 27 burn
1978 Oct 12		Nav system on
1978 Oct 17			722.1 20283 x 20309 x 62.8
1978 Nov 8			718.06 20181 x 20186 x 62.8
1978 Nov 13		Operational
1990		Operating at A-3 on Rb clock
1992 Apr 19		end of nav use
1992 Nov 16		end of ops

Aviation Week: January 19,2004

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Gstar 4

 1990-100B

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GTE Satellite Corp.'s final Gstar was launched in 1990 aboard the same Ariane as Satcom C-1. The spacecraft was another GE Astro Space series 3000, and provided VSAT (very small aperture terminal) communications relay services.

GStar 4
Date	Time	Event	Orbit
1990 Nov 20	2311	Launch by Ariane 42P (V40)	CSG
		T+1:28 PAL sep
		T+3:20 St 1 sep
		T+3:22 St 2 MES
		T+4:29 Fairing
		T+5:33 St 2 sep
		T+5:37 St 3 MES
	2328	T+17:41 St 3 MECO
	2330	T+19:16 Satcom C1 sep
	2332	T+21:27 Sylda sep
	2334	T+23:03 Gstar 4 sep
1990 Nov 21	0500?	Apo 1	629.13 216 x 35670 x 7.0 ?
	1000?	Peri 1
	1500?	Apo 2
	2030?	Peri 2
1990 Nov 22	0230?	Apo 3 125E
	0700?	Peri 3
	1300?	Apo 4 30W
	1800?	Peri 4
	2300?	Apo 5 170E
1990 Nov 23	0430?	Peri 5
	1000?	Apo 6 10E
	1500?	Peri 6
	2000?	Apo 7 140W
1990 Nov 23	1937?	Star 30C burn
1990 Nov 24			1421.20 35268 x 35720 x 0.1 GEO 136.3W+3.8E
1990 Nov 24	0800?	Braking	1424.29 35338 x 35771 x 0.1 GEO 136.3W+3.0E/d
1990 Dec 1		mv in	1436.24 35784 x 35794 x 0.0 GEO 125.1W
1991 Mar 4			1436.07 35781 x 35790 x 0.0 GEO 125.1W
1992 Aug 28			1436.06 35776 x 35795 x 0.0 GEO 125.0W
1992 Aug 30		mv out
1992 Oct 11			1436.23 35780 x 35797 x 0.1 GEO 104.9W
1992 Dec 29			1436.10 35785 x 35788 x 0.0 GEO 105.0W
1994 Mar 20			1436.09 35784 x 35789 x 0.0 GEO 105.0W
1995 Jan 21			1436.09 35785 x 35787 x 0.0 GEO 105.0W
1997 Apr 24			1436.09 35779 x 35794 x 0.1 GEO 105.0W
1999 Jun 15			1436.09 35770 x 35802 x 0.0 GEO 105.0W
2003 Sep 5			1436.10 35779 x 35793 x 1.0 GEO 105.0W

Explorer 26

 1964-086A

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The EPE-D (Energetic Particles Explorer D, S-003C) payload was the last in the EPE series. It was launched at 0900 on 1964 Dec 21, and at 0912 it entered a 456.26 min, 316 x 26191 km x 20.1 deg orbit. EPE-D's on-orbit name was Explorer XXVI. Explorer XXVI transmitted until 1967 May 21.

Mass 46 kg, size 0.43m high, 0.70m dia, 0.86m mag boom.

The satellite was lost in 1967 but recovered in 1971 by radar tracking as unidentified object 1971-00B, and the final stage was cataloged at that time. Another piece was cataloged as 1964-86D in 1972 but a decay note was issued at once; this was probably an erroneous duplicate entry. The despin weights have not been cataloged.

Explorer 26
Date	Time	Event	Orbit
1964 Dec 21	0900	Launch by Delta	CK LC17A
	0902	T+2:26 Thor MECO
		T+2:32 Thor sep
	0903	T+2:32 Delta S/N 20108 burn, 2:40
		T+3:02 Fairing sep
	0905	T+5:10 Delta SECO
		T+10:52 St 2 sep	-2441? x 313 x 28.3?
	0910:58	T+10:58 Altair KW-0139 burn
		T+11:21 St 3 burnout
		T+12:26 yoyo despin
	0913	T+13:24 Altair sep	456.26 316 x 26191 x 20.1
1967 May 21		End of tx
2003 Jul 5			157.11 272 x 6260 x 19.75

In their own words : conversations with the astronauts and men who led America's journey into space and to the moon

 https://welib.org/md5/23770c9122395538ba5144fc72bd3e8d

Daily Variety: March 25,2004

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