Tuesday, July 21, 2009

MER-1 (Opportunity)

 2003-032A


MER-1 is "Opportunity".

MER-B Launch 2003 Jul 8 , landing 2004 Feb 25.

The pre-TCM1 miss distance is 340000 km, which is probably the flyby distance of the final stage.

B.R B.T = (204197,274289) with TCA 2004 Jan 26 1623:22.

Landing at around 2S, 354E. The landing site was named Challenger Memorial Station.

Landing site is 1.9462S 354.4734E. AIAA2004-4980 quotes actual as 1.94828S 354.47417E. Diff is (0.002,0.001) deg. Radius of Mars is 3397 km, so 0.001 deg corresponds to 17 murad or 60 meters. Hence 1 km = 0.01687 deg.

MER-1 entry mass was 832 kg, 5 kg more than Spirit.

At Gusev, b=14.57 so in X, 1 km = 0.01743 deg.

 

Date  Sol  DX, DY  Position  Location  
2004 Jan 4  1  0 0  14.5719S 175.4785E  Columbia Memorial Station  
2004 Jan 4  1  287 417  14.5649S 175.4835E  Heatshield 
2004 Mar 14  70  216 212  14.5683S 175.4823E  Bonneville Crater SW Rim, Deserts 
2004 Apr 20  106  500 -34  14.5725S 175.4872E  Missoula Crater N Rim 
2004 May 4  120  1000 -255  14.5762S 175.4959E  Lahontan Crater W Rim 
2004 May 27  142  1770 -756  14.5846S 175.5093E Dagwood Sandwich Rock 
2004 Jun 12  158  2350 -1110  14.5906S 175.5194E  Hank's Hollow 
2004 Aug 21  226  2413 -1122  14.5908S 175.5205E  Ebenezer Rock, West Spur, Columbia Hills 
2005 Feb 24  408  2779 -1068  14.5899S 175.5269E  Larry's Lookout, Husband Hill 
2005 Jun 26  526  2724 -1200  14.5921S 175.5260E  Independence Rock, Husband Hill 
2005 Sep 28  618  2950 -1185  14.5921S 175.5260E  True Summit, Husband Hill 
2006 Jan 1  710  3060 -1500  14.5972S 175.5318E  Eldorado 
2006 Feb 12  751  3090 -2000  14.6056S 175.5324E  Posey Rock, Home Plate 
2006 Mar 26  792  3200 -2095  14.6072S 175.5343E  Tyrone Rock 

A Sol is 24 hours 39 minutes 35.244 seconds

Spirit: (Sol 1 ends 2004-01-04 14:15 UTC) - = landing + 09:49 Spirit landed at 14:34 LST-A = 0426 UTC Jan 4. So 24:39 LST-A is 0426 + 10:05 = 1431 UTC Jan 4. 1415 UTC = 1434+0949 LST-A = 24:23 LST-A = EOLST - 13m. Wassup? ERT error? LT= 9min

If Sol 1 end = 14:15 ERT = 14:06 UTC, that's 24:14 LST-A.

LST-B = LST-A + 12:01:10 Oppo landed at 13:33 LST-B. 0454 UTC. Oppo: (Sol 1 ends at 2004-01-25 15:48 UTC) = 10:54 after landing = 24:27 LST-A = EOLST - 12min. LT = 11 min.

If Sol 1 end is 15:48 ERT = 1537 UTC then end is 24:16 LST-A.

Ahhh.. LST runs on a 24-hour martian day with 1 mars day = 88775.244 SI second = 86400 Mars seconds so 1 Mars second = 1.0275 Earth seconds. Thus, 9:49 Earth = 9:33 Mars and A Sol 1 ends at 14:34 + 9:33 = 24:07 ? 10:54 Earth = 10:36 Mars and B Sol 1 ends at 13:33 + 10:36 = 24:09 ? Suspect ERT. Conclude A Sol 2 starts at 1406 UTC 2004 Jan 4 and B Sol 2 starts at 1537 UTC 2004 Jan 25.

Nominal landing is at 0435 ERT and 0505 ERT (A,B).= 0426 and 0454 UTC.

JD = ( A Sol - 2 ) * 1.02749125 + 2453009.087500 = ( B Sol - 2 ) * 1.02749125 + 2453030.150694

A Sol = 2 + ( JD - 2453009.087500 ) * 0.9732443 B Sol = 2 + ( JD - 2453030.150694 ) * 0.9732443

 

Date  Sol  DX, DY  Position  Location  
2004 Jan 25  1  0 0  1.9483S 354.4742E  Eagle Crater, Challenger Memorial Station 
2004 Jan 25  1  716 -414 1.9553S 354.4863E  Heatshield 
2004 Apr 6  72  190 40  1.9476S 354.4774E  Anatolia 
2004 Apr 30  95  705 -100  1.9500S 354.4861E  Endurance Crater NW Rim  
2004 May 21  116  840 -185  1.9514S 354.4884E  Endurance Crater SE Rim  
2004 Aug 19  203  720 -160  1.9510S 354.4864E  Endurance Crater SW Inside Slope 
2004 Dec 14  317  695 -182  1.9514S 354.4859E Endurance Crater SW Rim 
2004 Dec 22  325  705 -400  1.9550S 354.4861E  Heatshield area 
2005 Feb 19  382  590 -850  1.9626S 354.4842E  Jason Crater W slope 
2005 Mar 8  399  640 -1520  1.9739S 354.4850E  Yuri Rock, Vostok Crater 
2005 Apr 2  423  485 -3140 2.0013S 354.4824E  Voyager Crater E slope 
2005 Apr 25  446  462 -3471 2.0069S 354.4820E  Purgatory Dune 
2005 Aug 3  543  490 -3750  2.0116S 354.4825E  Scoop Rock 
2005 Oct 9  608  460 -3925  2.0145S 354.4820E  Snoopy Rock, Erebus Crater N Rim 
2006 Feb 5  724  260 -4060  2.0168S 354.4786E  Roosevelt Rock, Erebus Crater W Rim 
2006 Apr 4  780  385 -4640  2.0266S 354.4807E  (Southward traverse) 


Rover B 
 

DateTimeEventOrbit  

2003 Jul 8  0318:15  Launch by Delta 7925H-9.5  CC SLC17B 
  T+1:16 SRM 1-6 out 
  T+1:19 SRM 7-9 on 
  T+1:20 SRM sep 1-6 26 km 1.2km/s  -6300 x 35?  
  T+2:39 SRM sep 7-9 68 km  -5800 x 85?  
  T+4:23 MECO 
  T+4:31 St 1 sep 
 0322:52 T+4:37 SES-1  -3400 x 120  
 0322:57 T+4:42 Fairing sep-3390 x 120  
 0327:03 T+8:48 SECO-1  160 x 180 x 28.5 (Prelaunch) 
   155 x 175 x 29.40 (TLE) 
 0426:12 T+1:07:57 SES-2 0.949 km/s 
 0428:24 T+1:10:09 SECO-2  163 x 4762 x 28.5 (Prelaunch) 
   161 x 6509 x 29.40 (TLE) 
 0429:16 T+1:11:01 St 2 sep 
 0429:53 T+1:11:38 TES 90s over 170E 15N (175E 11N?) 
 0431:20 T+1:13:05 TECO C3= 10.3457 p=184 km 
 0436:03 T+1:17:48 Yoyo 
 0436:08 T+1:17:53 Star 48 sep  
 0458  SES-3 depletion at 20.9N 75.5W 2658 km 
 0459  SECO-3  164 x 6517 x 26.00  
  Injection C3= 14.322 RLA DLA = 334.65, -3.89 (EME2000) 
2003 Jul 8  1247  Pass EL1:4 
2003 Jul 9    233 x -68660 x 29.47 
2003 Jul 12  1122  Depart Earth sphere 1.5Mkm 
2003 Jul 18  1930 TCM-B1 54m 16.2m/s 
2003 Sep 8  1600 TCM-B2 2m 0.53m/s 
2004 Jan 17  0200 TCM-B4 0.1m/s 
2004 Jan 20  2150  Enter Mars sphere 
2004 Jan 25   Mars arrival  
 0433:42  Cruise sep 
 0448:42  Entry 5.70 km/s -11.47 deg  12 x -17335 x 4.5  
 0453  Parachute deploy 
 0453:04  Heat shield sep 
 0453:15  Backshell sep 
 0454:27  RAD/TIRS burn 
 0454:30  Bridle cut 
 0454:33 Landing at Meridiani Planum 

 

 26 bounces 
 0500  Rolling 
 0502? At rest 
 0508:59  MFSK LANDED ACCEL tone 
 0706  Petal opening 
2004 Jan 28   Wheels deploy 
2004 Jan 31  0950:07  Begin to move off lander (83s drive) 
2004 May 1   Arrive Endurance crater 
2004 Dec 12   Leave Endurance 
2004 Dec 22   Arrive at heat shield 
2006 Sep   Arrive at rim of Victoria 
2007 Sep 11   Enter Victoria crater 
2008 Aug 28   Leave Victoria crater 

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