1990-077A
The Broadcasting Satellite 3a (BS-3a) was named Yuri 3A on reaching orbit. The satellite used a GE Series 3000 bus, built with collaboration by Nippon Electric Corp. It was procured by NASDA for the NHK (Nihon Hoso Kyokai) broadcasting network, and operated by the Telecommunications Satellite Corp. of Japan (TCSJ). Two channels were used by NHK and one by Japan Satellite Broadcasting.
The bus was 1.3 x 1.6 x 1.6 m in size, 3.2 m high once the antennae were deployed with a 15 m solar panel span. Launch mass was 1115 kg, 550 kg BOL. Apogee motor is 0.8m dia 1.5m long 515 kg max propellant.
The satellite was turned over to TCSJ from NASDA on 1990 Nov 28. It was retired in Apr 1998.
| BS-3a | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1990 Aug 28 | 0905 | Launch by H-1 (H22F) | TNSC Osaki |
| T+0:40 SOB 7-9 on | |||
| 0906 | Strapons sep (T+1:25) | ||
| T+4:30 MECO | |||
| T+4:36 VECO | |||
| 0909 | Stage 1 sep (T+4:38) | ||
| 0909 | T+4:42 SES-1 | ||
| 0910 | T+5:14 Fairing sep | ||
| 0915 | Stage 2 MECO (T+10:45) | 151 x 200? x 30.7 | |
| SES-2? | |||
| SECO-2? | |||
| 0929 | T+24:00 Spinup | ||
| 0929 | T+24:05 St 2 sep | 91.12 184 x 475 x 30.67 | |
| 0930 | Stage 3 burn 62s (T+24:28) | ||
| 0931 | TECO T+25:30 | ||
| 0931 | Stage 3 sep (T+26:47), alt 190 km | ||
| Stage 3 tumble (sep+2s) | |||
| 1500? | Apo 1 | ||
| 2030? | Peri 1 | ||
| 1990 Aug 29 | 0200? | Apo 2 | |
| 0800? | Peri 2 | ||
| 1330? | Apo 3 | ||
| 1990 Aug 29 | 668.11 195 x 37680 x 28.8 | ||
| 1850? | Peri 3 | ||
| 1990 Aug 30 | 0021 | AKM at Apo 4 | |
| 1990 Aug 30 | 1470.95 35254 x 37677 x 0.3 GEO 157.7E+8.6W | ||
| 1990 Aug 31 | Solar panels deployed | ||
| 1990 Sep 7 | 1428.40 35191 x 36080 x 0.3 GEO 111.1E+1.9E | ||
| 1990 Sep | Partial solar power loss | ||
| 1990 Sep 19 | Tests | GEO 122.5E | |
| 1990 Oct 15 | On station | GEO 110E | |
| 1990 Oct 25 | 1436.06 35771 x 35800 x 0.1 GEO 109.9E | ||
| 1990 Nov 28 | Operational, to TCSJ | ||
| 1991 Apr 29 | 1436.19 35776 x 35800 x 0.1 GEO 110.0E | ||
| 1992 Apr 11 | 1436.16 35775 x 35800 x 0.1 GEO 109.9E | ||
| 1993 Oct 18 | 1436.17 35777 x 35798x 0.0 GEO 110.0E | ||
| 1994 Feb 22 | Electrostatic discharge, 1 hr outage | ||
| 1995 Jun 23 | 1436.17 35775 x 35800 x 0.0 GEO 109.9E | ||
| 1997 Aug 1 | 1436.13 35757 x 35817 x 0.1 GEO 109.8E | ||
| 1997 Aug | Replaced by BSAT 1a, in reserve | ||
| 1997 Sep 1 | 1436.09 35773 x 35799 x 0.0 GEO 109.6E | ||
| 1998 Apr 6 | 1436.20 35773 x 35804 x 0.1 GEO 109.7E | ||
| 1998 Apr 13 | Begin orbit raise | GEO 109E | |
| 1998 Apr 14 | 1444.07 35900 x 35985 x 0.2 | ||
| 1998 Apr 20 | End orbit raise | ||
| 1998 Apr 28 | 1445.04 35832 x 36089 x 0.2 | ||
| 1998 May | Orbit raise | ||
| 1998 Jun 9 | 1457.31 36154 x 36247 x 0.2 | ||
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