Tuesday, June 23, 2015

Intelsat 603

 1990-021A


Intelsat 603 was the first single-payload launch aboard a Commercial Titan 3. Martin Marietta failed to rewire the logic to take into account the fact that no dual-launch `top' satellite was present; the Intelsat and its Orbus 21S perigee kick motor remained attached to the Titan core second stage, waiting in vain for the non-existent top satellite to separate. Controllers commanded the Intelsat to separate from its kick motor, and used the liquid apogee motor to raise the satellite's orbit and avoid an early reentry. The Titan stage reentered on Mar 28 at 1420 UTC, over the Pacific southeast of Taiwan.

In 2003 usage of IS-603 was transferred to New Skies (although it's not clear if ownership changed). An on orbit operations licence was given to Intelsat Global/UK by the UK government on 2010 Nov 17; on 2013 Jan 8 the satellite's control was transferred to Argentina to provide ARSAT service at 81W. 


Intelsat VI~F-3 
 

DateTimeEventOrbit  

1990 Mar 14  1152:31  Launch by Titan 3  CC  
 1154:20  T+1:49 Stage 1 ignition 
 1154:28  T+1:57 SRM sep 
 1156:58  T+4:27 Stage 2 ignition, St 1 sep 
 1157:09  T+4:38 Fairing sep 
 1200:37  T+8:06 Stage 2 cutoff  
1990 Mar 14   Titan stage 2 MECO   
1990 Mar 14  1217  Stage 2 failed to sep from I603/Orbus-21  89.87 169 x 366 x 28.6 
1990 Mar 14   I603 sep from Titan/Orbus 21S  89.75 169 x 355 x 28.6 
1990 Mar 15   Begin LAM orbit raise 
1990 Mar 16    91.13 262 x 397 x 28.3 
1990 Mar 18    92.32 375 x 401 x 28.3 
1990 Mar 26  1200   93.98 372 x 565 x 28.3 from 92.92 373 x 399 x 28.3 
1990 Mar 29  2100   95.81 544 x 570 x 28.3 from 93.98 372 x 565 x 28.3 
1991 Mar 18    95.78 546 x 565 x 28.3 
1992 Jan 31    95.82 546 x 569 x 28.3 
1992 Mar 9    95.79 545 x 568 x 28.3 
1992 Mar 10   orb trim 95.82 545 x 571 x 28.3 
1992 May 7    95.83 550 x 567 x 28.3 
1992 May 8  0344  Orbit lower OL1 burn  93.65 355 x 570 x 28.32 
1992 May 8  1356s Orbit lower OL2 burn  92.04 344 x 414 x 28.31 
1992 May 8  1835  Orbit lower OL3 burn  91.56 355 x 366 x28.31 
1992 May 9  0930s  Orbit CIRC  91.70 365 x 369 x 28.31 
1992 May 11  1049  Spacing burn  91.60 355 x 370 x 28.31 
1992 May 11  2318  OV-105 contact Intelsat, fail to grapple 
1992 May 13   STS-49 retrieval 
 2359:31  Capture of Intelsat VI F-3  91.60 355 x 370 x 28.31 
1992 May 14  0147:41  RMS grapple CB/Intelsat 
 0300  RMS berth Intelsat 
 0300  RMS ungrapple Intelsat 
 0453:22  Intelsat deploy 
 1723:52s  PKM burn 
1992 May 14  1725  Orbus 21S fired  
1992 May 14  1851  Orbus 21S sep  1548.00 776 x 75123 x 17.7 GEO 42.2E+26.1W 
1992 May 14  1851? Docking adapter/capture bar sep  
1992 May 14    1548.0 776 x 75122 x 17.68 
1992 May 15  0601  LAM0 2-min burn  1442.76 347 x 71486 x 19.3 GEO 53.2E+1.6W 
1992 May 17  0601  LAM1 18.3 min burn  1566.74 5076 x 71537 x ? 
1992 May 18  0816  LAM2 11.5min burn  1676.88 9171 x 71582 x 7.3 
1992 May 18    1670.90 9152 x 71379 x 7.53 
1992 May 18    1677.60 9169 x 71624 x 7.28 
1992 May 19  1200  LAM3 31.8 min burn  2298.95 31156 x 71489 x ? 
1992 May 21  0228  LAM4 3.8 min burn  2432.65 35582 x 71495 x ? 
1992 May 21  2204  LAM5 21 min burn  1426.09 35584 x 35997 x 1? 
1992 May 22  0000   1435.71 35617 x 35945 x 0.63 
1992 May 22   Deploy antennas 
1992 May 22    1435.82 35617 x 35945 x 0.6 GEO 36.8W 
1992 May 25    1436.24 35580 x 35998 x 0.6 GEO 37.3W 
1992 May 31    1436.33 35578 x 36003 x 0.6 GEO 37.7W 
1992 Jul 5    1436.10 35584 x 35988 x 0.5 GEO 37.7W 
1992 Jul 17   AOR, replaced 506  1436.11 35774 x 35799 x 0.5 GEO 33.5W 
1992 Aug 1    1436.15 35777 x 35798 x 0.4 GEO 33.6W 
1994 Mar 13    1436.15 35785 x 35789 x 0.0 GEO 34.6W 
1997 Jan 1    1436.13 35780 x 35794 x 0.0 GEO 34.5W 
1997 Oct 26    1436.08 35778 x 35794 x 0.0 GEO 34.4W 
1997 Nov   Move to 24W 
1997 Nov 7    1436.03 35776 x 35793 x 0.0 GEO 24.5W 
1999 Jun 16    1436.13 35776 x 35798 x 0.0 GEO 24.5W 
2002 Aug 2   Mv out 25W 
2002 Aug 9   mv in 20W 
2006 Jul 30    1436.09 35779 x 35793 x 3.7 GEO 20.0W 
2010 Mar 5    1436.12 35773 x 35801 x 7.0 GEO 20.0W 
2010 Mar 18   Mv out 0.4E/d 
2010 May 20   On station 11.5E 
2013 Jan 10   GEO 11.5E 
2013 Jan 10   Move out  
2013 May 2    1438.38 35820 x 35842 x 9.5 GEO 48.6W+0.6W/d 
2013 Jul 4   Move in at 80.6W  1436.07 35771 x 35801 x 9.6 GEO 80.4W 
2015 Jan 5    1436.08 35765 x 35807 x 10.5 GEO 80.3W 

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