Friday, March 12, 1999

STEP 2

 1994-029A


STEP Mission 2 (STP P91-2) was launched by a Pegasus from the Point Arguello Warning Area over the Western Test Range. The B-52 air-launched the Pegasus after takeoff from Edwards AFB. The Pegasus had a fourth hydrazine stage, the HAPS, and was intended to place STEP 2 into an 830 km polar orbit; the orbit achieved was only 603 x 821 km. The HAPS stage shut down early due to a software error.

STEP 2's main payload was SIDEX, the USAF Rome Lab signal identification experiment, intended to pick out specific signals from regions of high communications background. The 180 kg satellite was a TRW/DSI Eagle class lightsat. 


STEP 2 
 

DateTimeEventOrbit  

1994 May 19  1549  NB-52 takeoff from EAFB RW04/22 
 1703  NB-52 drop Pegasus over PAWA 
 1703  Pegasus stage 1 burn 
  Pegasus stage 2 burn 
 1707  Pegasus stage 3 burn (4:54) 
 1712  Pegasus stage 3 cutoff  -880? x 821 x 82.0 
 1725  HAPS single burn (underburn?) 
 1729  HAPS MECO, apogee 
 1730? HAPS sep from STEP M2 
 1732  HAPS coll. avoid burn 
   603 x 821 x 81.95 
 1751? Stage 3 reentry over SW Indian Ocean 
1995   Still ok 

Kosmos 1676

 1985-072A



Kosmos-1676 
 

DateTimeEventOrbit  

1985 Aug 16  1510 Launch by Soyuz  PL 
 1514  Blok-A sep 
 1518  Blok-I sep 
1985 Aug 16    89.63 165 x 346 x 67.16 
1985 Aug 22    89.29 162 x 315 x 67.2 
1985 Aug 23   
89.62 164 x 346 x 67.2 
1985 Aug 28    89.25 160 x 314 x 67.2 
1985 Aug 29   
89.30 162 x 317 x 67.2 
1985 Sep 3    88.84 157 x 276 x 67.15 
1985 Sep 3   
89.78 176 x 351 x 67.16 
1985 Sep 5   SpK-1 fiducial 
 0715? Deorbit 
 0725?  Entry 
 0737? Land 
1985 Sep 14    89.29 170 x 308 x 67.1 
1985 Sep 14   
89.97 176 x 369 x 67.15 
1985 Sep 25   SpK-2 fiducial 
 0059  Deorbit 
 0109  Entry 
 0121? Land 
1985 Sep 30    89.18 170 x 297 x 67.2 
1985 Oct 1   
89.49 179 x 319 x 67.1 
1985 Oct 10    89.04 175 x 278 x 67.2 
1985 Oct 10   
89.64 177 x 336 x 67.1 
1985 Oct 13  2011   89.50 176 x 322 x 67.2 
1985 Oct 14   
 1832?  Deorbit  -175? x 281  
 1847?  Entry 
 1859?  Land 


Monday, March 8, 1999

Westar 5

 1982-058A


Western Union Spacecom's Westar V HS-376 class satellite was launched in 1982 to replace the aged Westar II. The first stage burn was short by 91 m/s, but the second stage overburned to compensate.


Westar 5 
 

DateTimeEventOrbit  

1982 Jun 9  0024  Launch by Delta 3910  CC LC17 
  T+0:57 SRM 1-6 off 
  T+1:02 SRM 6-9 on 
  T+1:10 SRM 1-3 sep 
  T+1:11 SRM 4-6 sep 
  T+1:59 SRM 6-9 off 
  T+2:05 SRM 6-9 sep 
  T+3:44 MECO 
  T+3:52 St 1 sep 
  T+3:57 SES-1 5:04 
 0028 T+4:00 Fairing 
 0033 T+9:01 SECO-1  -750? x 300? x 27.4 
 0043 T+19:33 spin 
 0043 T+19:35 St 2 sep 
 0044 T+20:13 TES 85s 
 0045 T+21:38 TECO 
 0105 T+41m Stage 3 sep 633.74 206 x 35917 x 26.9 
1982 Jun 11  2120  AKM burn  
1982 Jun 11    1418.51 34970 x 35912 x 0.3 GEO 145.8W+4.4E 
1982 Jun 12    1424.36 35255 x 35857 x 0.0 GEO 142.5E+3.0E 
1982 Jun 17    1436.17 35720 x 35855 x 0.1 GEO 139.1W 
1982 Jul 2   mv out 1436.05 35721 x 35849 x 0.1 GEO 139.2W 
1982 Jul 14    1428.79 35566 x 35720 x 0.1 GEO 129.9W+1.8E 
1982 Jul 18   mv in 1436.08 35783 x 35789 x 0.0 GEO 123.4W 
1982 Jul 30    1436.13 35786 x 35788 x 0.1 GEO 123.1W 
1984 Dec 28    1436.11 35783 x 35790 x 0.0 GEO 123.1W 
1987 Mar 1    1436.10 35780 x 35792 x 0.0 GEO 122.6W 
1989 Mar 5    1436.05 35778 x 35792 x 0.0 GEO 123.1W 
1992 Mar 3    1436.04 35778 x 35792 x 0.1 GEO 122.5W 
1992 May 1    1436.03 35773 x 35797 x 0.2 GEO 122.4W 
1992 May 4   mv out  1438.91 35824 x 35859 x 0.2 GEO 124.6W+0.7W 
1992 May 25   orbit raise 1451.31 36007 x 36159 x 0.3  
1992 Oct 8    1451.36 36009 x 36160 x 0.6 
1996 Apr 27    1451.43 36027 x 36144 x 5.5

May 13,2026

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