Radsat

 1972-076B

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The P72-1 satellite, nicknamed Radsat, was launched on 1972 Oct 2 by Atlas Burner 2A from Vandenberg. A passive radar calibration target, Radcat, was also carried on the launch. P72-1 was built by Boeing. The satellite had a mass of 566 kg and was 2.1m long and 1.4m in diameter. The ARPA-501 instrument returned data on the gamma ray background and X-rays from the earth. ML-101 validated a new thermal coating later used on DSCS.

The satellite was in a noon-midnight 11:49 LTDN orbit.

Launch lists indicate this was probably an Atlas Burner 2. A Thiokol motor list shows a Star 26 (for a Burner 2A) launched on this date, but I think it may be an error as it omits the Oct 1971 Thor Burner 2A launch which we are confident had a Star 26.

P72-1
Date	Time	Event	Orbit
1972 Oct 2	2011?	Launch by Atlas Burner 2	V BMRS A1
		T+2:18?? BECO
		T+4:37?? SECO
		T+4:54?? VECO
	2016	T+5:00? Atlas sep	-1250 x 740? x 98.4
	2017	Coast
	2016	T+5:00?
	2026?	Star 37B burn, 42s	-1250? x 740 x 98.5
	2029?	Star 37B sep
			99.7 732 x 753 x 98.5

Aviation Week: June 5,1995

 https://welib.org/md5/bb6e26e0f871295c2a6f7467560878a5

The astronauts : Canada's voyageurs in space

 https://welib.org/md5/2dbb391fdc83adf94b9026ed590f2a4c

Seventeen: May 1995

 https://welib.org/md5/4dcf44802671a78ead0307707a9583d9

Vostok 5 (Hawk)

  1963-020A

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The pilot of Vostok-5, launched in Jun 1963, was Podpol. Valeriy Bykovskiy. The spacecraft ws 3KA No. 7 (Vostok-3A No. 7). After a record 5 day flight, Vostok-5's deorbit engine was ignited to return Bykovskiy to Earth. The Priborniy Otsek was meant to separate 20 seconds after its engine fired, but in fact it did not come loose until ten minutes later. Bykovskiy landed at 53 23 45N 67 36 41E, 540 km northwest of Karaganda in Kazakhstan.

Mass was 4700 kg.

Vostok-5
Date	Time	Event	Orbit
1963 Jun 14	1158:58	Launch by 8K72K	KB LC1
	1203	Blok A sep
	1208	Blok E sep	162 x 209 x 64.97
1963 Jun 16	1000?	Flyby Vostok-6, 6km
1963 Jun 19	1039?	Deorbit
	1041?	PO failed to sep
	1049?	PO sep (10 min late)
	1055:39	Pilot ejected 118:56
	1059	Cabin landed
	1106	Pilot landed 119:06

World Almanac and Book of Facts 1993

 https://welib.org/md5/27bbfc4145abb2239dbf0992935a8c32

A Brief History of the DoD Space Test Program

 http://www.astronautix.com/data/spacetestprogram.pdf

USA-68

 1990-105A

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Block 5D-2 S-10 (DMSP 21544, USA 68) was launched on 1990 Dec 1 by Atlas E from Vandenberg. The Star 37S kick stage underperformed when the nozzle failed during the last second of the burn, and S-10 (now F-10) entered an elliptical orbit. The hydrazine was used to partly correct the orbit, but was depleted in the operation. Initially tumbling, the spacecraft attained three-axis stabilization by the second orbit. The shock of the kick motor failure caused the solar array initially to deploy only partly, but later on rev 2 it popped fully open. The spacecraft operated for 4 years.

DMSP 21544 (S-10)
Date	Time	Event	Orbit
1990 Dec 1	1557:35	Launch by Atlas E	V SLC3W
	1559:39	T+2:04 Booster sep
	1559:59	T+2:24 Fairing sep
	1603:00	T+5:21 SECO
	1603	Atlas sep
	1609	T+10:27? Star 37S burn 43.4s
	1610	Star 37S nozzle failed T+42s	610 x 850 x98.9
	1610	Hydrazine burn, 32 m/s
			100.71 734 x 850 x 98.9
1990 Dec?		OLS cover sep
1991 Apr 8			100.64 731 x 846 x 98.8
1993 Aug		Still operational
1994 Sep 26		end of ops
1994 Dec?		OLS off
1995 Aug 11			100.52 725 x 840 x 98.6

Mission to Mars

 https://welib.org/md5/8738440ec258f67b948586eb0010c257