Friday, December 21, 2018

Spaceplane Hermes: Europe's Dream of Independent Manned Spaceflight

 https://welib.org/md5/af2d2cf720c67b103c5100a258a95dba

Apollo Mission Control: The Making of a National Historic Landmark

https://welib.org/md5/a8525a6aef91a91bf944cecdca995a16

Intelsat 701

 1993-066A


The Intelsat 7 series of satellites were built by Space Systems/Loral using the FS-1300 bus. The satellites are scaled up versions of the Intelsat 5/Superbird/Arabsat series. Launch mass was 3650 kg and dry mass was 1425 kg.

Intelsat 701 was slated for the POR.


Intelsat 701 
 

DateTimeEventOrbit  

1993 Oct 22  0646:00  Launch by Ariane  CSG 
 0704  Stage 3 MECO 
 0706? Stage 3 sep 
   636.00 198 x 36040 x 7.0 
1993 Oct 24   Raise perigee 
1993 Oct 24    633.56 332 x 35781 x 6.8 
1993 Oct   LAM 
1993 Oct 28    1436.34 35666 x 35916 x 0.1 GEO 121.3E+0.07W 
1993 Nov 14    1436.16 35667 x 35908 x 0.0 GEO 121.0E 
1993 Dec 21    1436.18 35608 x 35967 x 0.1 GEO 121.8E 
1993 Dec   mv out  
1994 Jan 11    1435.37 35755 x 35789 x 0.1 GEO 172.3E+0.1E 
1994 Mar 11   mv in POR  1436.08 35777 x 35795 x 0.0 GEO 174.0E 
1994 Jun 14    1436.06 35773 x 35798 x 0.0 GEO 174.1E 
1995 Jan 28    1436.07 35774 x 35797 x 0.0 GEO 174.0E 
1996 Dec 6    1436.06 35765 x 35805 x 0.0 GEO 174.0E 
1997 Aug 24   mv out 
1997 Sep 14   mv in  GEO 179E 
1997 Oct 8    1436.07 35776 x 35795 x 0.0 GEO 179.9W 
1999 Oct 16    1436.05 35776 x 35795 x 0.0 GEO 179.9W 
2006 Aug 2    1436.08 35774 x 35798 x 0.0 GEO 180.0W 
2011 Nov 8    1436.09 35777 x 35795 x 0.0 GEO 180.0W 
2011 Nov 27   Move out 
2011 Dec 29   Move in at 157E 1436.10 35772 x 35801 x 0.1 GEO 157.0E 
2013 Feb 20    1436.27 35774 x 35805 x1.0 GEO 156.9E+0.05W/d 
2013 Feb 24   Move out  1433.41 35706 x 35761 x 1.1 GEO 160.8E+0.7E/d 
2013 Mar 25   Cross 180E 
2013 Aug 1   117 deg traversed 1432.98 35700 x 35750 x 1.4 GEO 82.9W+0.8E/d 
2013 Oct 15   Move in  1436.09 35784 x 35789 x 1.6 GEO 29.5W 
2017 May 2    1436.11 35769 x 35804 x 4.1 GEO 29.5W

Thursday, December 20, 2018

THEMIS 1

 2007-004B


After prime mission, sent to the Moon as ARTEMIS P1. "Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon's Interaction with the Sun" (ARTEMIS)

In Jul 2009, the orbits of P1 and P2 began to be raised.

http://sscweb.gsfc.nasa.gov/cgi-bin/sscweb/Locator.cgi


THEMIS Probe B 
 

DateTimeEventOrbit  

2007 Mar 10    1868.59 461 x 87290 x 15.75 
2007 Apr 10?   OTM 
2007 Apr 11    1878.01 922 x 87166 x 15.21 
2007 Jun 4    1878.89 1000 x 87120 x 14.2 
2007 Jun 20    1878.88 992 x 87127 x 13.93 
2007 Sep 19    1878.47 880 x 87225 x 12.3 
2007 Sep 26    2148.04 1654 x 95884 x 12.9 
2007 Oct 5  0846  Pass EL1:4 
2007 Oct 11    3197.21 1745 x 129281 x 12.8 
2007 Oct 24    5386.30 1568 x 189247 x 12.0 
2007 Nov 26    5769.51 1684 x 198675 x 8.6 
2007 Dec 4    5755.42 1657 x 198355 x 6.7  
2008 Feb 15    5458.51 2286 x 190595 x 1.7  
2008 Feb   Begin inclination burns 
2008 Mar 1    5704.22 2324 x 196424 x 2.1 
2008 Apr 10    5710.96 2936 x 195979 x 4.7 
2008 May 27    5650.43 3420 x 193996 x 8.7 
2008 Jul 18    5637.78 4046 x 193057 x 12.6 
2008 Aug 29    5623.79 4425 x 192330 x 15.6 
2008 Oct 3    5738.33 5615 x 193975 x 16.4 
2008 Nov 11    5613.58 2157 x 194345 x 17.1 
2009 May 18    5822.22 2806 x 198849 x 11.9 
2009 Jun 3    5816.10 2763 x 198742 x 11.4 
2009 Jul 20   Artemis P1, begin lunar burns 
2009 Aug 1  1940s  ORM-01A 8.2 m/s burn  
 2030s ORM-01B  
2009 Aug 5    5666.01 2355 x 195448 x 9.99 
2009 Aug 10  1304s  ORM 02A 
 1317  Perigee 1678 km  
 1354s  ORM 02B  
2009 Aug 12  2350  Apogee 228423 km 
2009 Aug 15  1027  Perigee 1874 km 
2009 Aug 17  2100  Apogee 228389 km 
2009 Aug 20  0716   1146 x 228323 (SSC) 
 0721  Perigee 1134 km  
2009 Aug 20  0739  ORM 03A 7m/s 
 0827  ORM 03B 10m/s 
2009 Aug 23  0130  Apogee 249015 km 
2009 Aug 25    7964.72 3375 x 248090 x 10.0 
 1945  Perigee 2289 km 
2009 Aug 28  1400  Apogee 248996 km 
2009 Aug 31  0826  Perigee 2086 km  
2009 Aug 31  1044  ORM 04A 12m/s 
 1147  ORM 04B 14m/s 
2009 Sep 3  1710  Apogee 285939 km 
2009 Sep 7  0217  Perigee 2261 km 
2009 Sep 10  1034  Apogee 284847 km  
2009 Sep 13  1900  Perigee 2870 km  
2009 Sep 13  2301  ORM 05A 12m/s 
2009 Sep 14  0007  ORM 05B 7m/s 
2009 Sep 16  1025  Enter Lunar sphere 
2009 Sep 17  0049  Lunar flyby R=45612 km h = 43875 
 1614  Depart lunar sphere 
2009 Sep 18  1432  Apo 346273 km 
2009 Sep 23  0740  Perigee 19712 km 
2009 Sep 26    13723.77 19690 x 347310 x 8.8 
2009 Sep 28  0230  Apo 347557 km 
2009 Oct 2 2134  Peri 19806 km 
2009 Oct 7  1513  Apogee 344846 km 
2009 Oct 12  0934  Peri 22546 km 
2009 Oct 12  1225s  FTM-1 0.9m/s 
2009 Oct 14  1936  Pass 128972 km from Moon 
2009 Oct 17  1027  Apo 355766 km 
2009 Oct 22  1352  Peri 33072 km 
2009 Oct 27  1939  Apo 358206 km 
2009 Nov 2  0159  Peri 34222 km 
2009 Nov 7  0421  Apo 351943 km 
2009 Nov 12  0622  Peri 32267 km 
2009 Nov 17   Apogee 347789 km 
2009 Nov 22  0501s  FTM 2 
2009 Nov 22  0546  Perigee 31614 km  31614 x 350414 (SSC) 
2009 Nov 27   Apogee 350414 km  
2009 Dec 2  0713s  FTM 3 
2009 Dec 2  0844  Perigee 32851 km 
2009 Dec 2    14611.66 32840 x 350368 x 10.6 
2009 Dec 7   Apogee 356728 km  
2009 Dec 7  0158  Enter L sphere 
2009 Dec 8  0125  THEMIS B 'knee' encounter with Moon, R=17839 km h=16101 
 0122  h=16830 km pass (CDF) 
 0900  Apogee 345541 km 
2009 Dec 9  0042  Depart L sphere 
2009 Dec 13  2353  Perigee 52162 km 
2009 Dec 19   Apogee 356389 km 
2009 Dec 25  0158  Perigee 48909 km 
2009 Dec 30   Apogee 354833 km 
2010 Jan 4  2311 Perigee 47012 km 
2010 Jan 7    47058 x 356845 x 59.5 
2010 Jan 10   Apogee 356286 km 
2010 Jan 15  1953 Perigee 43746 km  
2010 Jan 21   Apogee 361070 km  
2010 Jan 26  2102  Perigee 43674 km 
2010 Jan 30  1111  Enter L sphere 
2010 Jan 31  0813  S1 Lunar flyby 1 R=13730 km h=11992 hpost =12600 
 0823  CDF peri 12340 km  
2010 Feb 1  0529  Depart L sphere 
2010 Feb 6  0940  h=377066 apo(lunar) = 266550 
2010 Feb 12  1229  Enter L sphere 
2010 Feb 13  1002  Flyby 2 at 3136 km (CDF) 
2010 Feb 13  1006 S1+13d Lunar flyby 2 R=4694 h=2958 hpost=3290 km 
2010 Feb 14  0714  Depart L sphere 
2010 Feb 19    223471 x 1157008 x 22.71  
2010 Feb ?   S1+46d DSM-1 
2010 Feb 26   THEMIS B at 971000 km 
2010 Mar 5   THEMIS B at 1.2Mkm 
2010 Mar 10  1900  DSM 7.31m/s 
2010 Mar 15  1720? Apogee at 1191430 km  
2010 Apr 5    12068 x 1101767 x 16.6 
2010 Apr 13  2120 Earth flyby EGA 10644 km  
2010 Apr 15  1715  Pass 147258 km from Moon 
2010 Apr 20  0900  TCM5 0.18m/.s 
2010 May 4 1742 Pass GSEx=1.2Mkm, enter SEL1 region 
2010   Arrive SEL1 point WSB 
  DSM 2 
2010 Jun 6  1200 Range 1493696 km, Apogee 1492410 km 
2010 Jun 20  2145  TCM6 0.18m/s 
2010 Jul 5  0347  Pass GSEx=1.2Mkm inbound, leave SEL1 
2010 Jul 19  2300  TCM7 0.66m/s 
2010 Aug 18  0600  TCM8 2.24m/s 
2010 Aug 23  0433? Lissajous orbit insertion around EM-L2 
  61300 km from Moon 
2010 Aug 30  0436  Enter L sphere /1 
2010 Sep 1  1900  Periline 42170 km  
2010 Sep 5  0234  Depart L sphere 
2010 Sep 10  2200  Apolune 75000 
2010 Sep 13  0619  Enter L sphere /2 
2010 Sep 16  0013  Perilune 39393 km 
2010 Sep 18  1545  Depart L sphere 
2010 Sep 26  1000  Apolune 80330 km 
2010 Sep 29  1437  Enter L sphere /3  
2010 Oct 2  0510  Perilune 34698 km 
2010 Oct 4  2304  Depart L sphere 
2010 Oct 11  1540  Apolune 77550 km 
2010 Oct 14  0914  Enter L sphere /4 
2010 Oct 17  0020  Perilune 38047 km 
2010 Oct 19  1316  Depart L sphere 
2010 Oct 22  1713  Apolune 81728 km  
2010 Oct 30  0516  Enter L sphere /5 
2010 Nov 1  2010  Perilune 32540 km  
2010 Nov 4  1046  Depart L sphere  
2010 Nov 11  1300  Apolune 80380 km 
2010 Nov 14  1702  Enter L sphere/6 
2010 Nov 17  0653  Perilune 37340 km 
2010 Nov 19  1951  Depart L sphere 
2010 Nov 22  1755  Apolune 79905 km 
2010 Nov 29  2038  Enter L sphere/7 
2010 Dec 2  1202  Periline 32865 km 
2010 Dec 5  0113  Depart L sphere 
2010 Dec 8  0620  Pseudo Apolune 80590 km 
2010 Dec 12  1200  Apolune 81780 km 
2010 Dec 15  2225  Enter L sphere/8 
2010 Dec 18  1145  Perilune 35483 km 
2010 Dec 21  0151  Depart L sphere 
2010 Dec 23  1400  Apolune 77440 km 
2010 Dec 30  0953  Enter L sphere/9 
2011 Jan 1   Depart EM-L2 
2011 Jan 2  0500  Perilune 29140 km  
  Arrive EM-L1 
  In EM-L1 Lissajous orbit  23656 x 58816 x 2387 dia 
2011 Jan 5  1644  Apolune 59525 km 
2011 Jan 9  0422  Perilune 33467 km 
2011 Jan 11  2042  Depart L sphere 
2011 Jan 13  1620? Apolune 73470 km 
2011 Jan 16   Approach to 67500 km 
2011 Jan 20  0059  Enter L sphere/10 
2011 Jan 22  1410  Perilune 32336 km 
2011 Jan 25  0603  Depart L sphere 
2011 Feb 2  1237  Enter L sphere/11 
2011 Feb 5  0015  Peri 37670 km 
2011 Feb 7  1103  Depart L sphere 
2011 Feb 16  0135  Enter L sphere/12 
2011 Feb 18  1410  Perilune 31735 km  
2011 Feb 21  0653  Depart L sphere 
2011 Mar 1  0711  Enter L sphere/13 
2011 Mar 3  1800  Perilune 37682 km 
2011 Mar 6  0530  Depart L sphere 
2011 Mar 15  0258  Enter L sphere/14 
2011 Mar 17  1440  Perilune 32086 km 
2011 Mar 20  0915  Depart L sphere 
2011 Mar 28  0011  Enter L sphere/15 
2011 Mar 30  1200  Perilune 37620 km 
2011 Apr 1  2334  Depart L sphere 
2011 Apr 11  0141  Enter L sphere/16 
2011 Apr 13  1315  Perilune 33158 km 
2011 Apr 16  0806  Depart L sphere 
2011 Apr 23  1643  Enter L sphere/17 
2011 Apr 26  0540  Perilune 37188 km 
2011 Apr 28  1739  Depart L sphere 
2011 May 1  0047  Apolune 75220 km 
2011 May 7  2053  Enter L sphere/18 
2011 May 10  0815  Periline 34128 km 
2011 May 13  0212  Depart L sphere 
2011 May 16  0840  Approach to 64653 km 
2011 May 20  1055  Enter L sphere/19 
2011 May 23  0022  Perilune 36389 km 
2011 May 25  1240  Depart L sphere 
2011 Jun 3  1505  Enter L sphere/20 
2011 Jun 6  0230  Perilune 34349 km 
2011 Jun 8  1854  Depart L sphere 
2011 Jun 16  0722  Enter L sphere/21 
2011 Jun 17  2121  Perilune 35079 km 
2011 Jun 21  1142  Depart L sphere 
2011 Jun 24  1532  Enter L sphere/22 
2011 Jun 27  1404  Begin LOI burn 50.3m/s at 5114 km 
 1542  Perilune 1515 km 
 1631  LOI cutoff  3543 x 27000 km  
2011   Enter lunar orbit, retrograde 
2011 Jul 2    193 x 26308 x 171.32 
2015 Oct 23    550 x 16065 x 164.5 
2017 Aug 3    317 x 16211 x 170.3 
2017 Oct 8    515 x 18761 x 158.3 
2018 Jun 1    608 x 15938 x 155.2  

Sirius 3

 2000-035A


The first Digital Audio Radio Satellite for CD Radio of Washington D.C was built by SS-Loral using the FS-1300 bus. DARS 2 and 3 will also be similar. The satellites will provide high-quality digital radio broadcasts to automobiles in the US.

Launch mass 3800 kg; 1570 kg dry.

In 1998 the decision was made to move the satellites to highly elliptical orbits of 24000 x 47000 km. The 24-hour period orbit inclined at 63 deg had apogee over N America.


Sirius 1 
 

DateTimeEventOrbit  

2000 Jun 30  2208:47  Launch by Proton/DM3  LC81/24 
  T+2:02 Stage 2 
  T+2:06 Stage 1 sep 
  T+5:34 St 2 MECO 
  T+5:35 St 2 sep 
  T+5:40 St 3 MES 
  T+5:44 Fairing sep
  T+9:38 St 3 MECO 
 2218:46 T+9:51 St 3 sep  164 x 180 x 64.8 
  Upper adapter sep 
 2252 T+43:50 DM burn 1 305s 
 2258 T+49:55 DM MECO-1  204 x 24396 x 63.4  
2000 Jul 1  0012 T+2:03:17 DM MES-2 113s 
 0013:57 T+2:05:10 DM MECO-2 
2000 Jul 1  0033:57 T+2:25:10 DM sep  6166 x 47110 x 63.4 
 0400  Solar panels deployed 
2000 Jul 3  1100?  LAM-1  1112.98 11346 x 47048 x 63.4 
2000 Jul   LAM-2 
2000 Jul 6  1300? LAM-3 1420.20 23848 x 47101 x 63.4 
2000 Jul 8    1433.87 24388 x 47097 x 63.3 
2003 May 19?  mv out 
2006 Aug 4    1435.95 24357 x 47209 x 62.6 GSO 65.5W 
2013 Feb   Began longitude drift 
2016 Aug 31    1436.14 25055 x 46519 x 59.6 GSO  

Outposts on the Frontier

https://welib.org/md5/0c757695f5e485d22a3337deaced4909

Sunday, December 16, 2018

Echostar 19

 2016-079A


SSL-1300S Loral satellite with high capacity. Mass 6637 kg.

High speed internet for HughesNet's North American services.


Jupiter 2 
 

DateTimeEventOrbit  

2016 Dec 18  1913  Launch by Atlas V431 AV-071  CC SLC41 
  T+2:05 SRB sep 
  T+4:26 Atlas BECO 
  T+4:32 Atlas sep 
  T+4:43 Centaur MES-1 
  T+4:51 Fairing 
 1926 T+13:38 MECO-1  166 x 656 x 27.86  
 1936 T+23:09 MES-2  166 x 674 x 27.88 
 1942 T+28:58 MECO-2 
 1945 T+32:03 Centaur sep  1222.94 154 x 62852 x 25.8 
2016 Dec 20   Perigee raise 1445.30 6806 x 65127 x 12.7 
2016 Dec 21   Perigee raise 1777.38 19189 x 65264 x 5.2 
2016 Dec 23    1770.77 19080 x 65131 x 5.2 
2016 Dec 24   Perigee raise 2197.24 34052 x 65163 x 1.6 
2016 Dec 28    2245.56 35641 x 65209 x 1.4 
2016 Dec 29   Apogee lower  1499.85 35762 x 38288 x 0.1 
   1505.21 35725 x 38532 x 0.2 
2016 Dec 30   Circularize  1435.63 35751 x 35803 x 0.1 GEO 98.5W+0.1E/d 
2017 Jan 5    1436.11 35779 x 35794 x 0.1 GEO 97.1W 
2017 Feb 9    1437.16 35781 x 35794 x 0.0 GEO 97.1W 

Dawn

 2007-043A


Dawn will take 9 years to orbit Vesta and Ceres. Uses DS1 type ion engine: 3 NSTAR Xe thrusters. Star-2 bus with LEOStar-2 avionics and NASA/JPL NSTAR propulsion.

Size is 1.64 x 1.27 x 1.77m with 19.7m span.

Mass 1217.7 kg full, 746.9 kg dry with 425.2 kg of Xe and 45.6 kg of hydrazine (Marc Rayman, personal comm.)

288 kg of Xe are used to get to Vesta; 89 kg more are needed to get to Ceres. Orbit insertion is done with a hydrazine engine.

Launch by Delta 7925H to C3 = 10.91 km2/s2.

RHill is 40220 km.

For Sep 26 launch, C3 = 11.40 km2/s2

800 to 100 km orbits.

JPL mission, PI at UCLA, OSC/Dulles contractor, derived from Indostar.

The mission will give multicolor imagery of Vesta and Ceres, and optical and infrared surface spectra; topographic profiles at 30-meter resolution, and measurements of the gravity and magnetic fields. Chemical composition will be found via the gamma ray spectrometer.


Dawn 
 

DateTimeEventOrbit  

2007 Sep 27 1134:00 Launch by Delta 7925H  CC SLC17B 
  T+1:17 SRM 1-6 off 
  T+1:19 SRM 7-9 on 
  T+1:20 SRM 1-3 sep 
  T+1:21 SRM 5-6 sep 
  T+2:35 SRM 7-9 out 
  T+2:39 SRM 7-9 sep 
  T+4:22 MECO 
  T+4:31 Stage 1 sep 
  T+4:36 SEIG-1 
  T+4:41 Fairing sep
 1142:58 T+8:58 SECO-1  185 x 186 x 28.7  

 

1225 T+51:35 SEIG-2 
 1228 T+54:14 SECO-2   
   176.5 x 6819.0 x 28.64 
 1229 T+55:07 Stage 2 sep 
 1229 T+55:44 TES 212 km 
 1231 T+57:07 TECO 
 1235? Yoyo despin 
 1236 T+1:02:01 Stage 3 sep  214 x -86167 x 28.71 

 

  209 x -83420 x 28.9  
 1239 TIP T+1:05:44 
 1240:50 C3 = 11.319 at RLA,DLA= (98.89,28.48) 
  T+1:16:40 Stage 2 SEIG-3 
  T+1:17:04 SECO-3 
 2115  Pass EL1:4 
2007 Oct 2  0700  Leave Earth sphere 1.5Mkm 
   
   522.5d 1.016 x 1.523 AU x 2.16 
2007 Sep 27   v(sun-rel) 38.95 km/s 
2007 Dec 17   Interplanetary cruise phase 
2007 Dec 17   Ion drive on, ion thruster 3 
2008 May 12   Ion drive off 
2008 May 14   Ion drive on 
2008 May 27   38 kg used 
2008 Jun 17   Ion thruster 3 off, thruster 1 on 
2008 Aug 8   1.68AU from Sun, at 20.77 km/s, 55 kg used, dv so far = 1.38 km/s 
2008 Sep 27   dv so far = 1.68 km/s  1.21 x 1.68 AU x 1.4 
 
2008 Oct 31   Ion drive off, 82 percent activity, dv = 1.81 km/s, 72 kg 
2008 Nov 10  1107  At max Earth distance of 2.56AU 
2008 Nov 21  0031 TCM-1 0.6m/s 
 0242  TCM completed 
2008 Dec 1    639.37d 1.2200AU x 1.6849AU x 1.92 
2009 Feb 13  0512  Enter M sphere 1.08Mkm 
2009 Feb 18  0027:58 Mars gravity assist 543 km alt, 5.31 km/s  543 x -20665 x 119.5 deg 
2009 Feb 22  1951 Depart M sphere 
2009 Mar 1    730.71d 1.3691AU x 1.8063AU x 6.50 
2009 Apr 17  0007 Perihelion at 1.37 AU 
2009 Jun 8   Ion drive on 
2009 Sep 27   Xe prop used 103 kg (of 425 kg)  1.42 x 1.87 AU x 6.2 deg 
2009 Nov 13   Enters main belt at 1.666 AU 
2009 Nov 30   Ion drive off 
2009 Dec 4   Ion drive on 
2010 Jan 4   Thruster 1 off, thruster 2 on 
2010 Apr 28  LT=13.5min 
2010 Jun 5   Total dV reaches 4.29 km/s, beat DS1 record 
2010 Jul 5   Dawn 1.97AU from Sun 964.25d 1.752 x 2.068AU x 6.8 deg 
2011 May 3  Begin approach phase 
2011 May 10   1 M km 
2011 May 11    2.11 x 2.43 AU x 7.04 
2011 May 24   Range 640000 km  
2011 Jun 23   Range 158000 km 
2011 Jun 24  1243 150900 km 
2011 Jun 26  0024  137100 km 
2011 Jun 27  0721  126000 km, in Vesta Hill sphere 
 1521  123300 km, rdot 0.1 km/s 
 1921  121900 km 
2011 Jun 28  2031  113400 km  
2011 Jul 2  1300  80900 km  
2011 Jul 10  1448  34800 km  
 1921  34000 km 
2011 Jul 16  0130  16600 km 
 0348  Orbit capture at 16000 km  
2011 Jul 16   Vesta high orbit: dV 50 m/s relative to Vesta at 15900 km 
  rev 1 , 10 day thrusting orbit  
  rev 2, 4 day thrusting  
2011 Jul 23   5200 km circular orbit, stop thrust 
2011 Jul 29   Begin descent to survey orbit 
2011 Aug 2  0707  Vesta survey orbit insertion, 3 day, Vc=76 m/s  69hr 2700 x 2700 
2011 Aug 11   Imaging survey begins 
2011 Aug 31   Begin descent to HAMO; 30 deg node change 
2011 Sep 18   Enter HAMO, Vc=135 m/s  
  HAMO Mapping orbit 12.3hr 680 x 680 x 90 
2011 Sep 26   Orbit adjust 
2011 Sep 27   Orbit adjust 
2011 Sep 29   Begin HAMO mapping 
2011 Nov 2   Begin thrusting for descent to LAMO 
  Vesta LAMO close orbit  
2011 Dec 12   LAMO arrival, 210 km  
2012 May 1   Raise orbit to HAMO2 
2012 May 8   Alt 275 km, thrusting 
2012 May 15   Alt 355 km, thrusting 
2012 May 22   Alt 450 km, thrusting 
2012 May 29   Alt 590 km, thrusting  
2012 Jun 5   Alt 680 km  
2012 Jun 5  HAMO2 at 680 km x 94 deg  
2012 Jun 15   Begin HAMO2 mapping  
2012 Jul 25  1645 Vesta departure, begin raising orbit 
2012 Aug 8   Raising orbit, 1900 km  
2012 Aug 10   reaction wheel failed, 2100 km 
2012 Aug 17   Resume burn 
2012 Aug 20   3000 km  
2012 Sep 5  0626 Enter solar orbit 
2013 Nov 11   Begin coast phase 
2013 Dec 9   Resume thrust 
2014 Sep 11   Safe mode due to solar flare,
2014 Sep 16   Resume thrust 
2014 Dec 29   Range 626000 km  2.49 x 2.99 AU x 10.1 deg 
2015 Jan 26  1900? Within Sun-Ceres-L1, 228000 km 
2015 Feb 23  1900? Pass at 39073 km  38616 x -81369 x 34.1 
2015 Mar 6 1239  Ceres orbit  61000 x ? x 34.0 
2015 Mar 15  Ceres orbit insertion   
   24832 x 81319 x 33.6 
2015 Mar 19   75846 km apoceres 
2015 Mar 20    11634 x 76628 x 30.1 
2015 Mar 25  1200  4721 x 85818 x 22.5 
2015 Mar 28  2200 2781 x 95913 x 40.0 
2015 Apr 3  0600  8441 x 102148 x 80.8 
2015 Apr 7  1900  15063 x 73015 x 89.1 
2015 Apr 14  1200  15895 x 62483 x 89.9 
2015 Apr 18  1940  16428 km periceres 
2015 Apr 23   RC3 orbit, 8400 km 
2015 May 9   Begin descent to Survey 
2015 Jun 3   Enter lower orbit 4400 km orbit Survey 
2015 Jul 1  0532 Ion engine on to lower orbit 
 0549  Safemode, ion engine abort 
2015 Jul 2   out of safe mode, in 4400 km  
2015 Jul 14   Resume thrust 
2015 Jul 16   End test thrust 
2015 Aug 13   In third science orbit at 1470 km, HAMO 
2015 Aug 18  0453  Begin mapping phase 
2015 Oct 23   Ion on, begin descent to LAMO 
2015 Dec 15  Ceres close orbit  380 x 380  
2016 Dec   XMO3 (Extended mission orbit 3)  7520 x 9350  
2017 Feb 22   Ion ascent  7523 x 9326 x 84.9 
2017 Feb 26   End of ascent phase 1  9202 x 16364 x 85.1 
2017 Mar 8   Ion ascent 
2017 Mar 12   End of ascent phase 2  10462 x 53243 x 85.5 
2017 Apr 22   Ion orbit adjust 
2017 Apr 23   Reaction wheel 3 failure
2017 Jun 22    13355 x 52796 x 60.5 
2017 Jun 22   Ion engine adjust, peri to 5400 km   
2018 Apr   IE on 
2018 May 14   IE off, XMO6  450 x 4700  
2018 May 31  IE on, Lowering orbit 
2018 Jun 6   Ion engine off XMO7 35 x 4000 km 

Payload:

  • Ion propulsion system; 3 NSTAR Xe thrusters

  • Hydrazine engine 12 x 0.9N engines (from Indostar) MR-103G

  • 1.4m HGA

  • GaAs solar arrays

  • FC Framing cameras

  • VIR Visible/IR Mapping spectrometer (DLR/IAS-Roma) 0.35-5.0 microns.

  • GRaND Gamma Ray and Neutron spectrometer (LANL)

May 13,2026

  https://planet4589.org/space/jsr/back/news.855.txt