Explorer 28

  1965-042A

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Interplanetary Monitoring Platform C (IMP C) was launched on 1965 May 29 at 1200 by Delta C from Cape Kennedy. The new satellite entered orbit at 1207 and became Interplanetary Monitoring Platform 3, or Explorer 28. This time the Altair overburned and the apogee was 60000 km higher than the nominal 222000 km. The orbit was 190 x 264000 km x 33.9 deg. The MIT plasma probe experiment, the Ames proton analyzer, and one of two magnetometers failed after launch: otherwise the experiments worked well. IMP III transmitted until 1967 May 11 and reentered on 1968 Jul 5.

IMP 3
Date	Time	Event	Orbit
1965 May 29	1200:00	Launch by Delta C	CK LC17
	1202:27	T+2:28 MECO (3s early)
		Thor sep
	1202:31	T+2:32 Delta S/N 20009 burn, 2:43
		T+3:05 Fairing
	1205:15	T+5:16 Delta SECO
		32s coast, spinup
		T+6:02 St 2 sep,
	1206:08	T+6:08 X-258 Altair burn, 23s
	1206:32	T+6:32 St 3 burnout
	1206:58	T+6:58 Yo-yo despin
	1207:42	T+7:42 Altair sep	190 x 264000 x 33.9
		Altair tumble rockets
			8398.6 205 x 260777 x 33.87 (TMX)
1965 May 30	0436	Pass EL1:4
1965 Jul 20			8402.7 3287 x 257784 x 37.4
1965 Aug 19			8401.0 4039 x 256996 x 40.7
1965 Sep 28			8393.4 7850 x 253021 x 47.1
1965 Dec 25			8400.6 15918 x 245108 x 46.2
1966 Jan 17			8452.4 17686 x 244465 x 45.9
1966 Feb 15			8366.2 18278 x 242000 x 49.1
1966 Mar 22			8326.8 21112 x 238308 x 52.5
1966 Apr 21			8416.5 24435 x 236937 x 51.5
1967 Jan 26			8454.85 35528 x 226805 x 50.1
1967 May 11		End of transmissions
1967 Oct 27			8341.72 32289 x 277450 x 53.6
1968 Jul 5	0030?	Reentered over Indian Ocean

Kosmos 1783

 1986-075A

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Attempted to replace K1661: although an underburn meant that the spacecraft didn’t reach the correct orbit it was used for engineering tests

Kosmos-1783
Date	Time	Event	Orbit
1986 Oct 3	1306	Launch by 8K78M	PL LC41
		BVGD sep
		GO sep
		T+4:46 Blok A sep
		T+4:56 KhO sep
		T+8:46 Blok-I MECO
	1314	T+8:50 Blok-I sep
		T+1:00? BOZ burn
	1405?	T+1:00? BOZ sep
		2BL burn
		2BL MECO
	1408?	T+1:03 2BL sep
1986 Oct 3			(75B) 210x574x62.8, d 22 Nov
1986 Oct 3			(75C,E) low orbit
1986 Oct 3		Blok-L underburn
1986 Oct 3			596x20059x62.8

The Varieties of Religious Experience

 https://www.gutenberg.org/files/621/621-0.txt

Kosmos 50

  1964-070A

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Zenit-2 No. 25 was launched on 1964 Oct 28, 8 days after the previous flight landed. It was the fourth 51 degree mission. On Nov 5 after completing a standard 8 day flight the deorbit burn was attempted, but the DU did not operate correctly. The APO-2 system was activated and the spacecraft exploded. NORAD cataloged hundreds of debris fragments, all of which reentered rapidly. Pieces of the Kosmos-50 payload were recovered in Malawi.

Kosmos-50
Date	Time	Event	Orbit
1964 Oct 28	1040?	Launch by Vostok 8A92	KB
	1044?	Blok-E burn
	1050?	Blok-E sep
			88.7 196 x 241 x 51.3 (TASS)
	1325		89.03 186 x 265 x 51.4
1964 Oct 28	1920		88.74 190 x 233 x 51.23
	1729		88.71 187 x 233 x 51.2
1964 Nov 5	1030?	Attempted reentry
	1036?	APO-2 destruct