Sunday, July 4, 1982

Lunar Orbiter 2

  1966-100A


Lunar Orbiter II was launched at 2321 on 1966 Nov 6 from Kennedy. The Agena restarted at 2343 after a 14 min parking orbit coast, and inserted Lunar Orbiter II on its translunar coast. The mid course correction was carried out Nov 8 at 1930. Lunar orbit insertion was at 2026 on 1966 Nov 10. At around 2258 on Nov 15 the orbit was altered to begin photography. The orbit was 192 x 1846 km x 11.8 deg. An orbit adjustment was made at 0900 on 1967 Apr 14 to shorten the period of a solar eclipse, and the orbit was raised to prolong lifetime in June. Lunar Orbiter II was deorbited at 0555 on 1967 Oct 11, impacting at 0712 on Oct 11. The LO-2 mission report says that the estimated impact site was 2.96N 119.13E. Another source reported 4S 98E.


Lunar Orbiter II 
 

DateTimeEventOrbit  

1966 Nov 6  2321:00  Launch by Atlas Agena D 5802/6631 
 2323:08  T+2:08 BECO 
 2323:11  T+2:11 Booster sep
 2325:50  T+4:50 SECO
 2326:14  T+5:14 VECO
 2326:16  T+5:16 Fairing sep 
 2326:18 T+5:18 Atlas sep  -4092 x 182  
 2327:07  T+6:07 Agena 6631 burn 1, 2:35 
 2329:42  T+8:42 Agena MECO  88.10 176 x 194 x 28.4  
 2340:59  T+19:59 Agena burn 2, 1:28 
 2342:27  T+21:27 Agena MECO  181 x 350182 x 28.7 
 2346:12  T+25:12 Agena sep  
 2355:11  Agena retro  128 x 349600 x 29.6 
1966 Nov 70010?Agena depletion burn185 x 358688 x 28.6 
1966 Nov 8  1930:00  TCM 18.1s 21.1m/s  -88 x 355014 x 29.3  
1966 Nov 10  2026:37  LOI 611.6s 829.7m/s  196.3 x 1871.3 x 11.97  
1966 Nov 11    196 x 1871 x 12.2 (MOR) 
1966 Nov 15  2258:24  Lower orbit for photos  49 x 1853 x 11.89 
  28.1m/s 17.4s  
1966 Nov 26   End of photo acquisition 
1966 Dec 7   End of photo readout  40 x 1863 x 11.5 
1966 Dec 8  2036:28 Plane change 100.0m/s 61.3s  43 x 1884 x 17.5  
 2037:30  End of burn 
1967 Apr 14  0901:15  Orbit adjust 5.5m/s 3.2s  68 x 1840 x 16.8  
1967 Apr 24  1044  Apolune during eclipse 
1967 Jun 27  0700:45  Perilune raise 4.6s 8.0m/s 113 x 1841 x 16.5 
1967 Oct 11  0555:00 Deorbit burn at apolune  
 0555:36 Oxidizer depletion 
 0555:53 End of thrust  -218 x 1913 x 15.2  
 0558:33  Valves closed 
 0712:54  Impact 

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