SatEvo decay list #27 (issued 1997 March 20)

Here are more SatEvo decay analyses and predictions. Note that the "Actual?" decay dates are estimates based on the final available elements. Pegasus debris are included only if I predict their decay by April 30; other objects are included to May 31.

   #    Designation    Name               ------- Decay -------
                                          Predicted   Actual?

 24707   96- 73 D   Bion 11 deb D                    March  1.96 Note 1
 24483   94- 29 UG  STEP-2 Pegasus deb               March  2
 23917   86- 17 LD  Mir deb                          March  3.7
 24053   94- 29 DA  STEP-2 Pegasus deb               March  3
 24460   94- 29 TH  STEP-2 Pegasus deb               March  4?
  7089   73- 86 CH  Delta 1 deb                      March  5
 24352   94- 29 PD  STEP-2 Pegasus deb               March  6
 24424   94- 29 SC  STEP-2 Pegasus deb               March  6
 24658   86- 17 LW  Mir deb                          March  7
 24672   86- 17 LZ  Mir deb                          March  7.7
 24496   94- 29 UV  STEP-2 Pegasus deb               March  8
 23825   86- 17 JY  Mir deb                          March  9.7
 24706   96- 73 C   Bion 11 deb C                    March 10.23
 24710   96- 73 G   Bion 11 deb                      March 11? Note 2
 23677   95- 52 B   Cosmos 2321 r                    March 13.12
 23692   86- 17 JP  Mir deb                          March 13.8
 24036   94- 29 CH  STEP-2 Pegasus deb               March 13
 23890   86- 17 KJ  Mir deb                          March 16.4
 24316   96- 54 B   Centaur r                        March 17.02
 23894   86- 17 KM  Mir deb                          March 17.8
 24444   94- 29 TA  STEP-2 Pegasus deb               March 18
 24074   94- 29 DV  STEP-2 Pegasus deb               March 19
 24470   94- 29 TT  STEP-2 Pegasus deb      March 21
 24497   94- 29 UW  STEP-2 Pegasus deb      March 23
 24010   94- 29 BF  STEP-2 Pegasus deb      March 24
 19002   63- 14 DV  Westford Needles deb    March 28?
 24600   94- 29 ZC  STEP-2 Pegasus deb      March 29
 24523   94- 29 VX  STEP-2 Pegasus deb      March 30
 24619   94- 29 ZX  STEP-2 Pegasus deb      April  1
 24332   94- 29 NH  STEP-2 Pegasus deb      April  3
 24525   94- 29 VZ  STEP-2 Pegasus deb      April  3
 23694   86- 17 JR  Mir deb                 April  4
 20572   90- 34 C   Palapa B2R r            April  5
 24029   94- 29 CA  STEP-2 Pegasus deb      April  6
 24617   94- 29 ZV  STEP-2 Pegasus deb      April  8
 24503   96- 58 F   SL-12 r (aux motor)     April  9? Note 3
 24510   94- 29 VJ  STEP-2 Pegasus deb      April 10
 24073   94- 29 DU  STEP-2 Pegasus deb      April 11
 24357   94- 29 PJ  STEP-2 Pegasus deb      April 12
  1725   65- 82 CG  OV2-1/LCS 2 deb         April 13
 24393   94- 29 QW  STEP-2 Pegasus deb      April 14
 24052   94- 29 CZ  STEP-2 Pegasus deb      April 16
 24556   94- 29 XG  STEP-2 Pegasus deb      April 16
 24611   94- 29 ZP  STEP-2 Pegasus deb      April 16
 24576   94- 29 YC  STEP-2 Pegasus deb      April 18
 24666   96- 67 B   Centaur r               April 20? Note 4
  4445   69- 82 ES  Thorad Agena D deb      April 21
 24360   94- 29 PM  STEP-2 Pegasus deb      April 23
 24392   94- 29 QV  STEP-2 Pegasus deb      April 24
 22754   89- 89 P   COBE deb                May  1
 23898   86- 17 KR  Mir deb                 May  5
 23911   86- 17 KZ  Mir deb                 May  6
  8547   75-123 E   SL-12 r (aux motor)     May 19
 22757   89- 89 S   COBE deb                May 20
 23875   86- 17 KC  Mir deb                 May 23
 23570   95- 11 G   SFU deb                 May 25
 23884   86- 17 KD  Mir deb                 May 26
 23874   86- 17 KB  Mir deb                 May 28
 23934   86- 17 LT  Mir deb                 May 30

Notes

• 1. Revision from previous list after receipt of posthumous elsets.
• 2. No recent elsets.
• 3. The perigee of #24503 has fallen to 110 km, down some 15 km during the past month. The decay date is uncertain.
• 4. #24666, another Centaur rocket, also has a low perigee and an uncertain decay date. Elsets during the past ten days show perigee between 88 and 122 km.

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Reach the author via email at alan@wingar.demon.co.uk