1985-073A
The Planet A spacecraft was named Suisei (`Comet',
\uni{ 彗星)}{ }
once it was launched into solar orbit on a trajectory to pass close to comet 1P/Halley.Mass of Suisei was 135 kg full 125 kg dry. Size is 1.40m dia 0.70m high. (1.7m high with dish; 2.4m from top of dish to bottom of MGA).
Escape trajectory was 11.374 km/s. The launch was a direct ascent trajectory with M3B and KM-P burns at stage 2 apogee. M-3B had an Isp of 292.9s, estimated dV 4.393 km/s KM-P was 1.23m long 0.79m dia with mass 461 kg full, 41 kg empty. It had 32 kN thrust for 36s with Isp of 287.4s, implying a delta-V of 3.4 km/s.
Suisei passed 150000 km from Halley. KM-P passed 200000 km from Halley.
Deep space tracking station Usuda.
|
| Suisei |
| |
|
| Date | Time | Event | Orbit |
|---|
|
| 1985 Aug 18 | 2333 | Launch by Mu-3S2-2 | KASC |
| | | T+0:40 SOB sep |
| | | T+1:24 Stage 1 cutoff, sep |
| | | T+1:26 Stage 2 start |
| | | T+2:36 Stage 2 cutoff, coast |
| | | T+2:35 Fairing |
| | 2336 | T+3:15 Stage 3 spinup |
| | 2337 | T+4:00 Stage 2 sep |
| | | 2 Marman band clamps sep |
| | 2337 | T+4:02 Stage 3 burn 87s |
| | 2338 | T+5:35 M3B rocket cutoff |
| | 2339 | T+5:54 M3B sep | 212 x 1373 x 31.8 |
| | 2339 | T+5:56 KM-P burn 44s |
| | 2339 | T+6:40 KM-P cutoff, escape | 250 x Inf x 31.2 |
| | 2340 | T+8:11 KM-P sep |
| | | 2355 | RCS despin 128rpm to 29rpm |
| 1985 Aug 19 | 0005 | RCS spin axis orient |
| | 0855 | Pass EL1:4 |
| | | | 0.67 x 1.01 AU x 0.9 |
| | | RCS despin to 6 rpm |
| 1985 Aug 24 | 0640? | Pass L1 |
| 1985 Nov 14 | | TCM-1 12m/s |
| 1986 Mar 8 | 1312? | Pass 151000 km from P/Halley |
| 1987 Apr 5 | 2240 | 2m/s Begin 65m/s TCM |
| | 2346 | 2.0m/s |
| 1987 Apr 6 | 0346 | 5.5m/s |
| | 2154 | 5.3m/s |
| 1987 Apr 7 | 0149 | 5.2m/s |
| | 0359 | 5.0m/s |
| | 2257 | 4.9m/s |
| 1987 Apr 8 | 0118 | 4.9m/s |
| | 0449 | 4.8m/s |
| | 2147 | 4.7m/s |
| | 2345 | 4.6 m/s |
| 1987 Apr 9 | 0326 | 4.5m/s |
| | 0541 | 4.4m/s |
| 1987 Apr 10 | 0336 | 4.43m/s |
| | 0443 | 1.5m/s |
| 1987 Jul 18 | | Occulted by Sun |
| 1991 Feb 22 | | Attitude control fuel expended, shut down |
| 1992 Aug 20 | | Earth encounter 900000 km |
| 1994 Jan 1 | | solar orbit | 0.796 x 1.034 AU x 1.72 deg |
Payload:
- UV Ly Alpha camera
- Solar wind analyser
