STS-26 (Discovery)

 1988-091A

---

STS-26 was the Return to Flight mission,the first Shuttle mission after the Challenger disaster,using Space Shuttle Discovery to deploy the TDRS-3 satellite.

STS-26R
Date	Time	Event	Orbit
1988 Jun 21		Roll to VAB	VAB
1988 Jul 5	0430	Rollout	LC39B
1988 Aug 4	2145	FRF, RSLS abort T-5 (0:01)
1988 Aug 10	2330	FRF-2 (0:22)
1988 Sep 29	1537:00	Launch from LC39B
	1539:05	SRB sep, 46.3 km
	1545:33	MECO, 110.0 km	88.03 65 x 289 x 28.5 (PK)
	1545:50	ET sep, 111.9 km	88.21 69 x 302 x 28.5 (OMS dV)
	1616:56	OMS-2 (2:21) 68m/s	90.55 299 x 304 x 28.5
	1619:18	OMS-2 CO
	2100?		90.55 300 x 303 x 28.5
	2150:04	TDRS deploy
	2205:02	OMS-3 (17s) 9m/s
	2300		90.85 300 x 332 x 28.5
1988 Sep 30	0015		90.87 303 x 332 x 28.5
1988 Oct 2	0330		90.86 302 x 332 x 28.5
1988 Oct 3	1210	PLBD closed
	1534:45	OMS DO (168s) 99m/s
	1537:33	OMS DO CO
	1606:33	Entry
	1637:11	Landed RW17 EAFB
	1637:18	NGTD
	1637:57	Wheels stop
1988 Oct 8	1443	SCA takeoff	EAFB
	1620	SCA landing	Kelly AFB TX
	1715	SCA takeoff	Kelly AFB
	2300	SCA landing	KSC SLF
1988 Oct 9	0225	Tow to OPF/1

Spaceflight: December 1997

 https://welib.org/md5/5360542ae4e5fd53f7701bd38b763b1a

Kosmos 584

  1973-063A

---

Kosmos-584 was a Zenit-4M flight. It lasted 14 days and used a 72.9 degree orbit. The Kettering group detected a TK recovery beacon.

Kosmos-584
Date	Time	Event	Orbit
1973 Sep 6	1040:01	Launch by 11A57	PL
	1044	Blok-I burn
	1048	Blok-I sep
	2227		89.91 203 x 336 x 72.9
1973 Sep 7	1200		89.95 205 x 336 x 72.9 (RAE)
1973 Sep 9	0125		89.89 204 x 333 x 72.9
		Lower apogee
1973 Sep 10	0422		89.18 204 x 262 x 72.8
1973 Sep 11	0000		89.21 204 x 265 x 72.8 (RAE)
1973 Sep 14	1523		89.12 201 x 259 x 72.8
		Raise apogee
1973 Sep 15	0914		89.66 202 x 312 x 72.9
1973 Sep 15	0930		89.70 204 x 314 x 72.9 (RAE)
1973 Sep 18	0600		89.63 200 x 311 x 72.8
1973 Sep 19		Engine sep	89.60 203 x 305 x 72.9 (RAE)
1973 Sep 20	0414?	Retrofire
	0424?	PO sep
	0430?	Entry
	0446?	Landed after 13.74d

Kosmos 91

  1965-075A

---

Zenit-4 No. 9 was launched in Sep 1965 on an 8-day mission.

Kosmos-91
Date	Time	Event	Orbit
1965 Sep 23	0900?	Launch by 11A57	KB
	0904?	Blok-I burn
	0909?	Blok-I sep	89.76 204 x 324 x 64.98
1965 Oct 1	0638?	Deorbit
	0658?	Landed

Gstar 3

 1988-081A

---

GTE Satellite Corp.'s Gstar 3 was almost lost during firing of the Star 30B apogee motor; 37 seconds into the burn, control was lost and between 47 and 55 seconds into the burn the spacecraft reversed direction completely. This left the payload in an orbit with perigee 20000 km lower than planned. Over the course of the next year, stationkeeping propellant was used to raise the orbit to geostationary; Gstar 3 was stationed at 93W, the location originally planned for Gstar 4.

Gstar 3
Date	Time	Event	Orbit
1988 Sep 8	2300:03	Launch by Ariane 3	CSG
		T+0:07 PAP on
		T+0:40 PAP sep
1988 Sep 8	2302:21	Stage 1 MECO
1988 Sep 8	2302:26	T+2:23 Stage 1 Sep
	2302:29	T+2:26 St 2 MES
	2303:50	T+3:47 Fairing
1988 Sep 8	2304:32	Stage 2 MECO
	2304:33	T+4:33 St 2 sep
1988 Sep 8	2304:41	T+4:39 Stage 3 MES
1988 Sep 8	2316:49	T+16:44 Stage 3 MECO
1988 Sep 8	2318:38	T+18:36 Gstar sep from SYLDA	200 x 36101 x 7.0
1988 Sep 8	2320:51	T+20:48 Sylda sep
1988 Sep 8	2320:56	T+20:53 SBS 5 sep from H-10
1988 Sep 8	2321:16	H-10 sep burn
1988 Sep 8			200 x 36206 x7.0
1988 Sep 9	0500?	Apo 1
	1000?	Peri 1
	1600?	Apo 2 over 80W
	2100?	Peri 2
1988 Sep 10	0300?	Apo 3 over 115E
	0800?	Peri 3
	1400?	Apo 4 over 49W
	1900?	Peri 4
1988 Sep 11	0000?	Apo 5 over 153E
	0600?	Peri 5
	1130?	Apo 6 over 15W
	1700?	Peri 6
	2200?	Apo 7 over 150W
1988 Sep 11	2019	Star 30B S/N 057A AKM
1988 Sep 11	2019	Guidance loss during AKM burn
1988 Sep 11			982.93 16583 x 36155 x 1.5
1989 Jan 25			983.14 16619 x 36128 x 1.7
1989 Feb 26			1070.83 20466 x 36120 x 1.8
1989 Jun 14			1185.81 25373 x 36092 x 1.9
1989 Jul 8			1204.09 26138 x 36088 x 1.9
1989 Jul 18			1228.02 27131 x 36085 x 2.0
1989 Jul 26			1261.88 28520 x 36086 x 1.9
1989 Jul 28			1265.99 28687 x 36087 x 1.9
1989 Aug 8			1298.54 30007 x 36090 x 1.9
1989 Aug 9			1304.84 30263 x 36089 x 1.9
1989 Aug 23		Orbit raise?
1989 Sep 5			1388.46 33604 x 36093 x 1.8 135.3E+12.4E
1989 Sep 16			1426.19 35092 x 36092 x 1.8 130.3W+2.5E
1989 Oct 9			1436.12 35775 x 35798 x 1.9 GEO 92.9W
1989 Oct 22		On station	GEO 93W
1992 Jan 8			1436.12 35768 x 35805 x 3.8 GEO 93.1W
1994 Jun 19			1436.12 35761 x 35812 x 5.9 GEO 93.1W
1996 Feb 28			1436.12 35778 x 35794 x 7.1 GEO 93.1W
1996 Sep 16			1436.14 35770 x 35804 x 7.5 GEO 93.1W
1996 Sep 23		mv out
1996 Oct 8			1436.27 35769 x 35810 x 7.5 GEO 94.2W+0.05W
1997 Apr 14		mv in	1436.08 35773 x 35798 x 7.9 GEO 105.0W
1998 Feb 20			1436.09 35772 x 35800 x 8.5 GEO 105.2W

Telecom 1C

 1988-018B

---

The final ECS-based Telecom 1 built by Matra for DGT and France Telecom was launched in Mar 1988.

Telecom 1C
Date	Time	Event	Orbit
1988 Mar 11	2328:00	Launch by Ariane V21	CSG
		T+0:07 PAP on
		T+0:40 PAP sep
		T+2:21 St 1 sep
		T+2:24 St 2 MES
		T+3:41 Fairing
		T+4:42 St 2 sep
		T+4:47 St 3 MES
	2344:34	T+16:34 St 3 MECO	254? x 36292? x 7.1
	2346:23	T+18:23 Spacenet sep
	2348:37	T+20:37 SYLDA sep
	2348:42	T+20:42 Telecom sep
		T+21:04 Avoidance burn
1988 Mar 13	1233	AKM at 4th apo
1988 Mar 13			1419.08 35113 x 35792 x 0.0 GEO 24.8W+4.3E
1988 Mar 23			1430.41 35535 x 35756 x 0.0 GEO 2.0W+1.8E
1988 Mar 30			1435.99 35780 x 35788 x 0.0 GEO 3.1E
1988 Apr 8		On station	GEO 3.4E
1988 May		Move to 5W
1988 May 28			1436.15 35783 x 35791 x 0.0 GEO 5.6W
1989 Jan 31			1436.07 35782 x 35789 x 0.0 GEO 5.1W
1991 Oct 20			1436.04 35764 x 35806 x 0.1 GEO 4.8W
1992 Aug 3			1436.04 35777 x 35793 x 0.0 GEO 5.0W
1992 Aug 9		mv out	1434.41 35748 x 35759 x 0.0 GEO 1.5W+0.4W
1992 Oct 29		mv in	1436.16 35782 x 35793 x 0.1 GEO 3.0E
1993 Sep 7			1436.05 35771 x 35799 x 0.0 GEO 3.0E
1996 Jan 18			1436.11 35765 x 35808 x 0.5 GEO 3.0E

Ekran 20

 1992-074A

---

Ekran-M 15 (Ekran (20)) was launched on 1992 Oct 30. The satellite was stationkeeping at 99E in late 1997.

Ekran-M No. 15
Date	Time	Event	Orbit
1992 Oct 30	1459:00	Launch by Proton
	1508	Stage 3 MECO
	1615?	DM burn 1
	1618?	DM MECO-1
	2132?	DM burn 2
	2136?	DM sep
1992 Oct 31			1427.89 35581 x 35670 x 1.6 GEO 92.2E+2.1E
1992 Nov 16			1435.85 35765 x 35798 x 1.5 GEO 99.4E+0.05E
1993 Jul 13			1435.98 35768 x 35800 x 0.9 GEO 99.4E
1995 May 28			1436.08 35776 x 35796 x 0.6 GEO 99.3E
1996 Oct 24			1436.04 35775 x 35795 x 1.6 GEO 99.3E

Kosmos 1908

 1988-001A

---

Kosmos-1908
Date	Time	Event	Orbit
1988 Jan 6	0741:00	Launch by 11K68	Plesetsk
		T+2:00 St 1 sep
		T+3:33? GO sep
		T+4:38? St 2 sep
		T+5:20? S5M burn 1
	0747	T+6:48 S5M MECO1 km	60? x 650 x 82.5
		T+40:58? S5M burn 2
		T+41:08? S5M MECO2
	0822?	T+41:38? S5M sep
1988 Jan 6			639x665x82.5

Progress 40

 1989-008A

---

Progress-40 (Progress No. 148, 7K-TG No. 148) was launched in Feb 1989. It carried 1993 kg of cargo, including the test of the Kotan memory retaining structure - two circular loop antennae which were deployed from the side of Progress after undocking on Mar 3.

Progress-40
Date	Time	Event	Orbit
1989 Feb 10	0853:52	Launch by Soyuz-U	KB
	0902	Blok-I sep
	0930		88.80 187 x 244 x 51.6
	1430		89.31 208 x 274 x 51.6
1989 Feb 11	1430		90.62 268 x 342 x 51.6
1989 Feb 12	0000		90.61 268 x 342 x 51.6
	0930		90.93 287 x 355 x 51.6
	1029:38	Docked with Mir, Kvant DP2
	2130		91.65 347 x 364 x 51.6
1989 Mar 3	0145:52	Undocked
	0147	Memory retaining struct. deploy test
	0500?	Structures sep (89-08C,D)
1989 Mar 5	0108	Deorbited
	0159	Reentered

The Day I Met Him

https://welib.org/md5/61db26ac6b9297fc237af9691792b969

Kosmos 172

  1967-078A

---

Zenit-4 No. 36 was launched in Aug 1967 and was the third of the year in the 51.8 degree summer slot.

Kosmos-172
Date	Time	Event	Orbit
1967 Aug 9	0545:18	Launch by 11A57	KB
	0549	Blok-I burn
	0554	Blok-I sep	89.4 200 x 293 x 51.8 (RAE)
	0703		89.21 194 x 276 x 51.8
	1430		89.44 202 x 290 x 51.8
1967 Aug 17	0200		89.30 197 x 281 x 51.8
1967 Aug 17	0405?	Deorbit
	0425?	Landed after 7.94d

Gorizont 19

 1989-081A

---

Gorizont No. 31L
Date	Time	Event	Orbit
1989 Sep 28	1705:00	Launch by Proton-K	KB
	1714	Stage 3 sep
	1822?	DM burn 1
	2338?	DM burn 2
	2342?	Blok-DM2 No. 27L sep
1989 Sep 28			1436.03 35671 x 35898 x 1.4 GEO 91.0E
1989 Oct 7			1435.74 35772 x 35787 x 1.4 GEO 96.0E
1989 Oct 26			1435.93 35775 x 35791 x 1.4 GEO 97.1E
1990 Jun 22			1435.98 35773 x 35795 x 0.8 GEO 96.3E
1992 Feb 1			1436.09 35778 x 35794 x 0.7 GEO 96.8E
1993 May 23			1436.10 35777 x 35795 x 1.8 GEO 96.9E
1995 May 31			1436.06 35776 x 35795 x 3.4 GEO 96.9E
1996 Oct 30			1436.22 3578 x 35795 x 4.4 GEO 96.6E
1996 Oct 30		mv out	GEO 96E
1996 Nov 20		mv in	GEO 33E
1996 Dec 31			1435.86 35768 x 35796 x 4.5 GEO 34.4E
1997 Mar 9			1436.21 35776 x 35801 x 4.6 GEO 33.9E
1997 Nov 16			1435.99 35720 x 35848 x 4.9 GEO 34.2E

Kosmos 1967

 1988-079A

---

Two-tone telemetry; Hi res satellite

Kosmos-1967
Date	Time	Event	Orbit
1988 Sep 6	0730:01	Launch by Soyuz	PL
	0734	Blok I burn
	0738	Blok I sep
1988 Sep 6			90.29 194 x 382 x 72.87
1988 Sep 7			90.26 196 x 377 x 72.88
1988 Sep 8			89.57 227 x 278 x 72.9
1988 Sep 12			89.52 226 x 275 x 72.9
1988 Sep 13			89.16 214 x 250 x 72.9
1988 Sep 15
	0322?	Deorbit
	0332?	PO sep
	0338?	Entry	-188 x 220 x 72.87
	0354?	Landed

Meteor-1 20

  1974-099A

---

Meteor F20 was launched in Dec 1974 and operated for at least a year.

Meteor F20
Date	Time	Event	Orbit
1974 Dec 17	1145	Launch by Vostok 8A92M	PL
	1149?	Blok E burn
	1155?	Blok E sep
			102.4 842 x 897 x 81.2
1976?		End of ops

Kosmos 146

  1967-021A

---

L-1 No. 2P ('P' for simplified) was launched on 1967 Mar 10 aboard a Proton-K with the first 11S824 Blok-D upper stage and the first 8D49-powered Proton third stage. The 7K-L1 11F91 No. 2P spacecraft was given the code name Kosmos-146; it was boosted to a 'simulated Moon', i.e. an elliptical orbit with apogee at lunar distance. The flight caused some statistical confusion, since it was included in Soviet totals of flights which reached the `second cosmic velocity' (Earth escape speed). The spacecraft was not recovered; some reports suggested attitude control may have failed on reentry, but Kamanin's diaries suggest that recovery was not intended and that the flight was a test of the Blok-D second burn, not a reentry test. Chertok's memoirs describe it as a test of 'acceleration to lunar reentry velocity'.

The Blok-D second burn was about 24h after launch and occurred over the USSR, simulating the wait for rendezvous and docking by another Soyuz. The flight appears to have lasted at least 42 hours; the RDM-3 radio beacon lasted that long even though it was meant to switch off after the second burn.

A nominal apogee of 400000 km would lead to an entry on Mar 22, but small differences in velocity could lead to entry as early as Mar 17 or as late as mid-April, or indeed to escape into solar orbit.

Kosmos-146
Date	Time	Event	Orbit
1967 Mar 10	1130:32	Launch by Proton-K	KB
	1136	Stage 3 burn
	1140?	Stage 3 cutoff	-1400? x 200 x 51.5
		Adapter sep
	1141?	Blok-D burn 1:49
	1143?	Blok-D cutoff, orbit insertion
		SOK cone sep
		SOZ sep	89.25 180 x 294 x 51.44 (A)
	1843		89.24 184 x 290 x 51.51
1967 Mar 11	1235		89.22 184 x 287 x 51.5
1967 Mar 11	1255:30	Blok-D burn to high apogee	200? x 400000?
1967 Mar 17?		Apogee
1967 Mar 17	2300?	Entry (apo = 258k)
1967 Mar 22	0800?	Reentered?
	?	Entry (apo = 400k)
1967 Apr 18		Entry ( apo = 871k)

Kosmos 2262

 1993-057A

---

Kosmos-2262
Date	Time	Event	Orbit
1993 Sep 7	1325:00	Launch by Soyuz	KB
	1329	Blok-I burn
	1333	Blok-I sep
1993 Sep 8			89.13 172x290x64.9
1993 Sep 9			89.81 207x323x64.9
1993 Sep 17		89.58 202 x 304 x 64.9
1993 Sep 18		Orbit raise	89.81 213 x 316 x 64.9
1993 Sep 28			89.52 207 x 293 x 64.9
1993 Sep 28		Orbit raise	89.86 212 x 322 x 64.9
1993 Oct 11		89.47 204 x 291 x 64.9
1993 Oct 11		Orbit raise	89.84 209 x 323 x 64.9
1993 Oct 21			89.54 203 x 300 x 64.9
1993 Oct 23		Orbit raise	89.82 212 x 318 x 64.9
1993 Oct 27		9	89.68 209 x 307 x 64.9
1993 Oct 30		Orbit raise	89.84 214 x 318 x 64.9
1993 Nov 12			89.45 206 x 288 x 64.9
1993 Nov 13		Tweak	89.53 209 x 293 x 64.9
1993 Nov 22			89.85 227 x 305 x 64.9
1993 Nov 24		Orbit raise	89.96 208 x 336 x 64.9
1993 Dec 17			89.03 187 x 265 x 64.9

Lacrosse 2

 1991-017A

---

The second LACROSSE, USA 69, was launched on 1991 Mar 8 by a Titan 4 from Vandenberg and was soon picked up by visual observers in a 414 x 664 km x 68.0 deg orbit. The Titan rocket stage was observed on Jul 12 in a similar orbit, 95.34 min 412 x 657 km x 68.0 deg. Meanwhile on Mar 28 the payload was seen to have moved to a new orbit, raising its perigee to circularize at 680 km.

LACROSSE 2
Date	Time	Event	Orbit
1991 Mar 8	1203	Launch by Titan4	V SLC4E
		Stage 1 burn T+1:57
	1208	Stage 2 burn T+5:02
	1208	Stage 1 sep T+5:03
	1211	Stage 2 MECO T+8:38
	1212	Orbit insertion T+8:58
	1212	Titan stage 2 sep	95.43 414 x 664 x 68.0 (CSS)
1991 Mar			95.5 420 x 662 x 68.0 (UN)
1991 Mar 28			683 x 683 x 68 (CSS)
1991 May 17			98.23 672 x 676 x 68.0 (CSS)
1991 Jun 29			98.23 669 x 677 x 68.0 (CSS)

Navstar 17

 1989-097A

---

Navstar 17 (USA 49, SVN 17/PRN 17) was launched on 1989 Dec 11 into plane D. It was the 5th Block II launch.

Navstar 17
Date	Time	Event	Orbit
1989 Dec 11	1810:01	Launch by Delta II 6925	CC LC17
		T+0:56 SRM 1-3,7-9 out
		T+1:01 SRM 4-6 on
		T+1:02 SRM 1-3 sep
		T+1:03 SRM 7-9 sep
		T+1:57 SRM 4-6 off
		T+2:02 SRM 4-6 sep
		T+4:25 MECO
		T+4:31 VECO
		T+4:33 Stage 1 sep
	1814	Stage 2 TIG (T+4:38)
	1814	Fairing sep (T+4:50)
	1821	SECO-1 (T+11:37)	180 x 500? x 35.66?
		T+20:55 spinup
	1830	T+20:58 Delta sep
	1831	T+21:35 TES
	1833	T+23:02 TECO
	1834	T+24:55 Stage 3 sep
	1834	T+24:57 despin weights
	1915?	T+1:05:00? SES-2 depletion
	1916?	T+1:06:20? SECO-2 depletion
	1935?	T+1:25 St 2 perigee	99.55 497 x 976 x 35.6
			353.04 156 x 20180 x 37.6
1989 Dec 13	1500?	Star 37XFP burn
1989 Dec 13	1400		726.21 20209 x 20560 x 54.95
1989 Dec 18	1700		726.02 20208 x 20552 x 54.94
1989 Dec 25	1700		726.02 20207 x 20552 x 54.94
1989 Dec 30	1700		718.10 20011 x 20359 x 54.92
1990 Jan 4	0230		718.03 20009 x 20357 x 54.94
1990 Jan 6		In service
1997 Feb 2		Operating at slot D3

Skylab 1

  1973-027A

---

The Skylab Orbital Workshop (Skylab OWS), Skylab A was launched at 1730 on 1973 May 14 by the two-stage Saturn V SA-513 from pad 39A at Cape Kennedy. The launch was designated Skylab SL-1. At 1731:13 the meteoroid shield was torn away from the side of the OWS by the vibration of the launch and the SAS-2 boom came free. Meteoroid shield debris impacted near 80.52W 28.66N. At 1732 the S-IC-513 first stage separated, but at 1733:10 the S-IC interstage ring failed to separate (probably due to damage from the shield debris). The second stage, S-II-513, ignited successfully. At 1739:49 the S-II shut down, entering a 93.2 min, 427 x 439 km x 50.0 deg orbit. It separated from the OWS at 1739:52, becoming satellite 1973-27B; it reentered on 1975 Jan 11. The SAS-2 array was completely torn away at 1739 when the S-II retro plume hit it.

The Skylab OWS pitched over and the refrigeration system radiator cover was jettisoned off the rear of the OWS at 1740. At 1745:20 the four nose fairing panels were ejected. Skylab reached solar intertial attitude at 1745:59.

At 1746:39 the ATM began to rotate into position, and was locked in place at 1750. Its solar panels deployed at 1754:52. At 1822 the SAS arrays were commanded to unfold, but SAS-1 was fouled by a piece of the meteoroid shield and only opened a crack. SAS-2 had already floated away into a separate orbit! Parts of the SAS arrays (1973-27J,K,L,M) were tracked later that day. The launch of the first crew was delayed from May 15 to May 25. Meanwhile, because of the lack of the thermal coating that had covered the meteoroid shield, temperatures in the OWS began to rise.

Skylab SL-2 docked at the axial port on the MDA (this was the only port ever used) before 2156 on May 25. It undocked at 2245 and flew around the station. A standup EVA attempt to free the SAS 1 wing was a failure. After some problems, SL-2 was back at the docking port and hard docked by 0352 on May 26.

The first crew entered the MDA at 1635 on May 26. At 1800 the pilot entered the AM and OWS to check conditions, and at 2000 on May 26 the crew entered the OWS.

---

First Skylab Crew (1973 May 26-Jun 22)

---

• CDR Commander: Charles Conrad, Jr.

• PLT Pilot: Paul J. Weitz

• SPLT Science Pilot: Joseph Kerwin, MD.

At 2100 on May 26 the crew deployed the JSC Parasol sunshade through the SAL (Scientific Airlock) in the OWS. The operation was complete by 0100 on May 27. Later on May 27 the ATM was activated. Skylab had begun operations. The space station's orbit was adjusted using the Apollo RCS thrusters at 0108 on May 29.

At 1517 on Jun 7, the CDR and SPLT conducted the first Skylab EVA, in which the SAS 1 array was freed. (see Skylab AM for details). The orbit was again adjusted at 2059 on Jun 17. The second EVA, by Conrad and Weitz, was carried out on Jun 19. Jun 20 was devoted to deactivation and cargo stowage. A particle collection experiment was placed in the SAL on Jun 21. The crew returned to Skylab SL-2 and undocked at 0855 on Jun 22.

The Skylab SL-3 spaceship docked at 2003 on 1973 Jul 28. The crew entered the lab at 2115.

---

Second Skylab Crew (1973 Jul 28-Sep 22)

---

• CDR Commander: Alan Bean

• PLT Pilot: Jack R. Lousma

• SPLT Science Pilot: Dr. Owen K. Garriott

The lab was reactivated by Aug 2. On Aug 4, the S-063 camera was jettisoned after being stuck in the SAL. It was tracked as 1973-27V and reentered after 27 days. The new crew's first EVA was on Aug 6 and saw the installation of a new A-frame sunshade.

Bean and Lousma got to testfly the ASMU (Automatically Stabilized Maneuvering Unit), a precursor of the MMU built by Martin Marietta, on Aug 13 and 15. The second and third EVAs were carried out on Aug 24 and Sep 22. On Sep 20 the CSM was checked out in preparation for the return. At 1430 on Sep 25 the crew transferred to the Apollo spaceship; Skylab SL-3 undocked at 1950 on Sep 25.

Skylab SL-4 docked at 2202 on Nov 16. The new crew entered at 1430 on Nov 17.

---

Third Skylab Crew (1973 Nov 17-1974 Feb 8)

---

• CDR Commander: Gerald Carr

• PLT Pilot: William Pogue

• SPLT Science Pilot: Dr. Edward Gibson

The first EVA was on Nov 22. On Nov 23 the CMG1 gyro overheated and had to be shut down. CSM trim burns were made on Nov 25 at 0222 and Dec 12. Two more EVAs, to observe Comet Kohoutek, were made on Dec 25 and 29. Flight tests of the M509 AMU maneuvering unit were made on 1974 Jan 20. The AMU was a project left over from the Gemini program. A CSM RCS trim burn was made at 1312 on Jan 21. On Jan 27, Skylab flew within 6 km of the OV3-2 satellite. Preparations for the final return to Earth began on Feb 2 with a checkout of the CSM. The final EVA was on Feb 3; equipment stowage took up Feb 5. At 2048 on Feb 6 the orbit was altered from 431 x 444 km to 433 x 455 km using the CSM thrusters. The crew transferred to the CSM at 0620 on Feb 8 and the MDA hatch was closed. After an RCS test burn at 0815, the Skylab SL-4 spaceship undocked at 1034 on 1974 Feb 8. Some engineering tests were carried out on Feb 8-9, then the station was powered down and put in gravity gradient mode. Telemetry was commanded off at 2009:05 on Feb 9.

It was initially intended that the Shuttle should dock with Skylab and raise its orbit, but unexpectedly rapid orbital decay associated with the 1980 solar maximum and delays to the Shuttle program made this untenable. In 1978 NASA began a series of measures to prolong the life of the station by changing its orientation in orbit. Telemetry was commanded on on 1978 Mar 7. Attitude control maneuvers were made between June and November. By Nov 3 it was in minimum drag configuration in a 364 x 377 km x 50.0 deg. On 1979 Jan 25 it was changed to solar inertial attitude; the orbit was 358 x 358 km x 50.0 deg. The attitude was changed on 1979 Jun 20 to the torque equilibrium attitude. At 0745 on Jul 11 Skylab was sent into a tumble in its last active maneuver. At 128 km altitude, Jul 11 at 1632, the solar panels broke off and telemetry from the station ceased. At 1637 on 1979 Jul 11 Skylab reentered over the Indian Ocean; some of the debris impacted in Australia and was recovered.

Skylab 1
Date	Time	Event	Orbit
1973 May 14	1730	Launch by Saturn V
	1731:13	T+63s OWS meteoroid shield fails, 8.7 km 0.30km/s
		SAS-2 partial deploy
		Shield impact at 80.52W 28.66N?
	1732:20	OECO
	1732:38	IECO
	1732:40	S-IC sep	-6055 x 206
	1732:43	S-II burn
	1733:10	S-IC interstage failed to sep
	1735:14	S-II CECO	38.82 -5513 x 353 x 50.0
	1739:49	S-II OECO	93.2 427 x 439 x 50.0
	1739:51	S-II Sep at 18.5m/s
	1739:53	T+9:53 SAS-2 array torn off
	1740	Radiator cover sep
	1743:25	S-II LOX safing
	1745:20	Fairing sep
	1745:59	Solar inertial attitude obtained
	1746:39	ATM rotation begins
	1747	Discone antenna booms deploy
	1755	ATM locked in place
	1754:52	ATM solar panels out
	1822	SAS fails to deploy
	1930?	S-II venting complete
1973 May 25	2125?	SL-2 docked between 2120 and 2145?
	2156	SL-2 already docked
	2245	SL-2 undocked
		SL-2 flyaround
		SL-2 SEVA, SAS-1 work
		SL-2 failed to dock
1973 May 26	0352	SL-2 docked
1973 May 26	1635	Crew entry MDA
	1800	PLT enter AM
	2000	Crew enter OWS
	2100	Deploy parasol begins
1973 May 27	0100	Parasol deploy completed
		ATM operational
1973 May 29	0108	CSM orbit trim
1973 Jun 7	1518	SL-2 EVA-1
	1518:27	2.0psi
	1520:02	0.8psi depress
	1521:16	0.5psi depress
	1522:44	0.2psi depress
	1523:16	HO
	1525	CDR egress
	1526	SPT egress
	1755	SAS 1 array freed
	1846	SPT in
	1847	CDR in
	1847:44	HC
	1848:12	Initial repress
	1850:36	Fast Repress 0.4 to 3.5 psi
1973 Jun 17	2059	Orbit trim
1973 Jun 19		SL-2 EVA-2
	1050:31	Start depress
	1051:04	3 psi
	1052:00	1.0 psi
	1052:34	0.5 psi
	1054:07	0.2 psi
	1057:20	HO
	1058:10	EV-1 (PLT) egress
	1105:42	CDR egress
	1112	Activate ATM battery with hammer
	1231?	Ingress
	1233	HC
	1233	Start repress
	1235:49	Fast repress 0.5 to 4 psi
1973 Jun 20		Deactivation
1973 Jun 21		Particle coll. expt in SAL
1973 Jun 22?		Crew to CSM
1973 Jun 22	0855	SL-2 Undocked
1973 Jul 9		27Q-U, 64-74D,E tracked
1973 Jul 28	2003	SL-3 docked
	2115	Crew entry
1973 Aug 2		OWS reactivated
1973 Aug 4		S-063 camera jettison (27V)
1973 Aug 6		SL-3 EVA-1, A-frame (27W-Z)
		(Bean in AL?)
	1724	In depress
	1726	0.7psi
	1728	0.2psi
	1732:23	HO
	1733	Egress
	2352	PLT (EV2) ingress
	2359	SPT (EV1) ingress
1973 Aug 7	0000	HC
	0003	Repress
1973 Aug 13		ASMU test
1973 Aug 15		ASMU test
1973 Aug 24		SL-3 EVA-2
		EV1 PLT (PCU 13, Umb 13) SPT (PCU 010, Umb 009)
	1618	Depressing
	1620:50	0.5psi
	1624:08	HO
	1625	SPLT out
	1626	PLT out
	2053	SPLT and PLT? in
	2054:21	HC
	2057:07	0.5psi
	2057:16	Fast repress
1973 Sep 20		CSM checkout
1973 Sep 22		SL-3 EVA-3
		EV1 SPT, Umb 7, PCU 13
		EV2 CDR Umb 12, PCU 10
	1110:50	in Depress
	1112:28	2.5 psi
	1114:20	1.3 psi
	1115:41	0.7 psi
	1117:50	0.2 psi
	1118:34	HO
	1120	SPT egress
	1129	CDR egress
	1357	Ingress
	1359:16	HC
	1400:55	Repress 0.2 to 4 psi
	1402:30	Repress complete
1973 Sep 25	1430	Crew transfer to CSM
	1950	SL-3 undocked
1973 Nov 16	2202	SL-4 docked
1973 Nov 17	1430	Crew entry
1973 Nov 22		SL-4 EVA-1; EV1 SPT, EV2 PLT
	1739	In depress
	1739	2 psi
	1741:26	1 psi
	1742:51	0.3 psi
	1743:48	HO
	1747	SPT egress
	1754?	PLT egress
1973 Nov 23	0015	Ingress
	0017:18	HC
	0018:45	Repress
1973 Nov 23		CMG-1 gyro shutdown
1973 Nov 25	0222:30	CSM trim 1.8m/s 88s
1973 Dec 12	1704:54	CSM trim 0.3m/s 17s
1973 Dec 25		EVA-2, Kohoutek
		PLT, CDR
	1647	2.8psi
	1651	1 psi
	1652	0.4 psi
	1654:52	HO
	1700	PLT Egress
	1737	CDR Egress
	2338?	CDR ingress
	2347	PLT ingress
	2348:00	HC
	2350:59	0.5 psi
	2351 Repress 0.7 to 1.5
	2353	3.2 psi
	2354	4.8 psi
1973 Dec 29		EVA-3, Kohoutek
		SPT PCU 10, UMB 9; CDR Um 16, PCU 16
	1722	3.5psi
	1726	1 psi
	1727:35	0.5psi
	1728	0.3psi
	1729	HO
	1732	EV1 out
	1734?	EV2 out
	2055?	Ingress
	2057:54	HC
	2100	0.2psi
	2101	Repress
1974 Jan 9			93.24 421 x 444 x 50.0
1974 Jan 20		M509 tests
1974 Jan 21	1312:00	CSM RCS trim 0.2m/s 10s
1974 Feb 3		SL-4 EVA-4, retrieval
		SPT, CDR
	1514	2.5psi
	1515	1.6psi
	1518	0.4psi
	1519	0.25psi
	1519	HO
	1521	SPT egress
	1528	CDR out
	2019	CDR in
	2037	SPT in
	2038	HC
	2041	0.5psi
	2041	Repress
1974 Feb 6	0641		93.24 421 x 444 x 50.0
1974 Feb 6	2048:00	Orbit raise 3.7m/s 180s	93.37 427 x 451 x 50.0
1974 Feb 8	0620	Hatch closed
	0815	RCS test
	1034	Undocked
1974 Feb 9		Orbital life tests
1974 Feb 9	2009:25	end of tx
1975 Jan 3			93.21 420 x 442 x 50.0
1975 Jan 11	0800?	S-II-13 reenters over 34N 19W
1976 Oct 8			92.97 410 x 430 x 50.0
1977 Dec 20			92.68 398 x 413 x 50.0
1978 Mar 7		Telemetry on	92.55 391 x 407 x 50.0
1978 Jun 9		Attitude adjust	92.27 378 x 392 x 50.0
1978 Jul 10		Attitude adjust	92.22 376 x 390 x 50.0
1978 Jul 19		Attitude adjust	92.19 375 x 388 x 50.0
1978 Jul 25		Attitude adjust	92.18 374 x 387 x 50.0
1978 Nov 3		Attitude adjust, min drag	92.02 366 x 380 x 50.0
1979 Jan 25			91.81 358 x 368 x 50.0
1979 Mar 2			91.50 342 x 354 x 50.0
1979 May 31			90.20 278 x 290 x 50.0
1979 Jun 20		Torque equalization
1979 Jul 4			88.98 220 x 227 x 50.0
1979 Jul 11	0745	Sent into tumble
	1544	Begin entry
	1611	Breakup begins over Ascension
	1632	Solar panels off
	1637	Reentry 31.8S 124.4E
	1645?	Impact in Western Australia