Saturday, March 24, 2012
Michibiki 1
2010-045A
QZS-1, Quasi Zenith Satellite System developed for Advanced Space Business Corp, a JAXA/industry consortium to provide enhanced nav and comm services in Japan, with GNSS augmentation service. ASBC shut down in 2007 and was replaced by a government non-profit foundation, SPAC.
Satellite orbit 35786 x 35786 x 45. TTC from Okinawa; sat over 135E.
QZSS in Japanese is Jun Ten Cho. Named 'Michibiki' ('guiding', 'showing the way'). Spacecraft derived from the ETS-8 bus. Mass 4100 kg wet, 1800 kg dry, box + 2 panels. Size 2.9 x 3.1 x 6.2m with 25.3m span.
Japan's first Quasi-Zenith Satellite System craft (Jun tenchou eisei shogou ki,
\uni{ 準天頂衛星システム}{ }
QZSS 1), was launched on Sep 11. QZSS 1 is named 'Michibiki' ('guiding light'). It carries an L-band navigation payload to augment GPS and a C-band payload for communications; the satellite's special inclined geosynchronous orbit will spend time directly overhead Japan, providing a better signal to receivers whose view of GEO satellites on the southern horizon is blocked by tall buildings. The satellite is 4100 kg wet, 1800 kg dry and was built by Mitsubishi Electric (MELCO) at Kamakura. The satellite is controlled by JAXA from a ground station on Okinawa. The H-IIA rocket put QZSS in a roughly 280 x 280 km x 31.8 deg parking orbit at 1129 UTC; after a second burn at 1141 UTC the satellite was deployed into a 280 x 35336 km x 31.8 deg path; the on board engine will circularize the trajectory and increase the inclination.| QZS | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2010 Sep 11 | 1117:00 | Launch by H2A 202 | TNSC |
| T+1:33 SRB burnout 45 km | |||
| T+1:47 SRB sep 54 km | |||
| T+4:18 PLF sep 150 km 2.6 km/s | |||
| T+6:42 MECO 228 km | |||
| 1123 | T+6:50 St 1 sep 223 km | ||
| 1123 | T+6:59 SEIG-1 236 km 5.2 km/s | ||
| 1129 | T+12:36 SECO1 288 km 7.7 km/s | 280 x 280? x 31.8 | |
| 1141 | T+24:43 SEIG-2 256 km 7.7 km/s | ||
| 1144 | T+27:36 SECO2 254 km 10.2 km/s | 280 x 35336 x 31.8 | |
| 1145 | T+28:27 St 2 sep, 275 km , 10.2 km/s | ||
| 2010 Sep 12 | 250 x 36150 x 31.9 | ||
| 0302 | AEF-1 67 min | 6785 x 35969 x 36.6 | |
| 2010 Sep 13 | |||
| 0426 | AEF-2 88 min | 1333.21 31528 x 35967 x 40.8 | |
| 2010 Sep 14 | |||
| 0321 | AEF-3 7 min | ||
| 2010 Sep 14 | 1442.80 35869 x 35965 x 41.0 | ||
| 2010 Sep 16 | 1521.70 35916 x 38975 x 41.0 | ||
| 2010 Sep 17 | 1422.22 32046 x 38982 x 41.0 | ||
| 2010 Sep 20 | 1422.69 32065 x 38982 x 41.0 | ||
| 2010 Sep 27 | 1436.04 32605 x 38964 x 41.0 | ||
| 2010 Oct 2 | 1436.08 32607 x 38964 x 41.0 GSO 120.7E | ||
Payload:
- L-band helical array antenna
- L1-SAIF antenna, QZSS L1 nav signal SBAS PRN 183
- Laser reflector
- C-band antenna
Friday, March 23, 2012
ROSAT
1990-049A
The ROSAT (Rontgensatellit) X-ray observatory, launched in Jun 1990, was similar to NASA's Einstein observatory but with improved spatial and spectral resolution. It carried nested X-ray mirrors which focused radiation onto a PSPC (Position Sensitive Proportional Counter, similar to the Einstein IPC) and an HRI (High Resolution Imager, supplied by the US team that built the similar instrument on Einstein). A separate but coaligned extreme ultraviolet telescope, the Wide Field Camera (WFC), was built by the UK Leicester University group. The mission was operated by MPE in Germany in collaboration with NASA and the UK. The first six months of the mission saw an all sky survey by the PSPC instrument. At the end of the survey, a power failure caused the spacecraft to lose attitude control and accidentally point at the Sun, which severely damaged the PSPC-C instrument then in the focal plane and degraded the WFC. Fortunately a backup PSPC and the HRI were available to support continued operations in the pointed phase, which was opened to astronomers across the world.
| ROSAT | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1990 Jun 1 | 2147:59 | Launch by Delta 6920 | CC LC17A |
| T+0:55 SRM 1-6 burnout | |||
| T+1:00 SRM 7-9 burn | |||
| T+1:02 SRM 1-6 sep | |||
| T+1:56 SRM 7-9 burnout | |||
| 2149:56 | T+2:02 Final 3 Castor sep | ||
| 2152:25 | T+4:24 Thor cutoff | ||
| 2152:30 | T+4:32 Thor sep | ||
| T+4:38 Delta burn | |||
| 2152 | T+4:43 Fairing sep | ||
| 2159:07 | T+11:09 SECO-1 299 km | 200? x 580? x 53 | |
| 2226:00 | T+38:02 Delta circ burn, 12s | ||
| 2226:12 | T+38:14 SECO-2 | ||
| 2231 | T+43:00 Delta sep | 577 x 584 x 53.0 | |
| 2226 | T+1:39:10 SES-3 evasive | ||
| T+1:39:15 SECO-3 | |||
| 2237 | T+1:50:10 SES-4 depletion | ||
| T+1:50:31 SECO-4 | 454 x 557 x 52.51 | ||
| 1991 Jan 25 | Power failure | ||
| 1991 Feb 10 | Pointed phase | ||
| 1991 May 13 | Y axis gyro failed | ||
| 1991 Aug 3 | Sky survey completion patch | ||
| 1991 Aug 13 | Completed sky survey | ||
| 1994 Jul | PSPC-B retired | ||
| 1998 Apr 28 | Star tracker failed | ||
| 1998 Sep 20 | Pointed at sun, HRI damaged | ||
| 1998 Oct 28 | end of ops | ||
| 1998 Dec 6 | PSPC observations | ||
| 1998 Dec 18 | PSPC observations ended | ||
| 1999 Feb 12 | Decommissioned | ||
| 2011 Oct 23 | 0150? | Reentered over Andaman Sea/China? | |
Payload:
- XRT 0.84m aperture Wolter I X-ray Telescope Zerodur/Au, 4 shells, f=2.4m
- WFC 0.58m aperture XUV Wide Field Camera, Ni-Al/Au mirrors f=0.52m 0.04-0.2 keV (60-300A)
- PSPC-C Position Sensitive Proportional Counter, 0.1-2.4 keV
- PSPC-B Position Sensitive Proportional Counter.
- HRI High Resolution Imager (SAO/Murray)
Sunday, March 18, 2012
Astra 1G
1997-076A
HS-601HP satellite, launch by ILS Proton. It is colocated with the other Astra 1 satellites. The second HS-601HP, it features GaAs solar cells with 7 kW power. In Mar 1998 it took over digital TV broadcast traffic from Astra 1F.
| Astra 1G | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1997 Dec 2 | 2310 | Launch by Proton 382-02/DM3 No. 2L | KB LC81 |
| 2312 | Stage 1 sep T+2:07 | ||
| 2315 | Stage 2 sep T+5:35 | ||
| 2315 | Fairing sep T+5:44 | ||
| 2315 | 8S812 burn T+5:40 | ||
| 2139 | 8S812 shutdown T+9:38 | ||
| 2319 | Stage 3 sep | 180? x 200? x 51.6 | |
| 2320 | T+10:44 PB (perekhodnikiy blok) sep | ||
| 1997 Dec 3 | 0026? | DM burn 1 | |
| MECO-1 | 200? x 36000? x 51.5? | ||
| 0530? | DM burn 2 | ||
| MECO-2 | |||
| 1997 Dec 3 | 0551 | T+6:41 Blok-DM sep | |
| 1997 Dec 3 | 841.70 10316 x 35972 x 12.4 | ||
| 1997 Dec 5 | 1400? | LAM-1 | |
| 1997 Dec 9 | 1399.32 34118 x 36008 x 0.3 | ||
| 1997 Dec 11 | 0700? | LAM-2 | |
| 1997 Dec 17 | 1436.13 35755 x 35818 x 0.0 GEO 24.6E+0.01W | ||
| 1997 Dec 30 | 1438.90 35014 x 36668 x 0.0 GEO 19.2E+0.7W | ||
| 1998 Feb 24 | 1436.12 35772 x 35802 x 0.0 GEO 19.2E | ||
| 1999 Oct 18 | 1436.02 35722 x 35848 x 0.0 GEO 19.2E | ||
| 2000 Jun 13 | 1436.06 35755 x 35816 x 0.1 GEO 19.2E | ||
| 2006 Oct 28 | 1436.16 35777 x 35797 x 0.1 GEO 19.2E | ||
| 2009 Mar 22 | 1436.11 35773 x 35800 x 0.0 GEO 19.2E | ||
Kosmos 2475
2011-064A
Three Glonass M launched by Proton-M with a Briz-M upper stage: Nos. 43, 44 and 45.
GLONASS 745 replaced 712 on 2011 Dec 8.
| Glonass-M | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2011 Nov 4 | 1251:41 | Launch by Proton-M | KB LC81 |
| T+2:07? Stage 1 sep | |||
| T+3:18? Fairing sep | |||
| T+5:38? Stage 2 sep | |||
| 1301 | T+9:40? Stage 3 MECO | ||
| 1301:25 | T+9:53? Stage 3 sep | -469 x 200 x 51.5 | |
| 1302:54 | Briz MES-1 248s | ||
| 1307:02 | Briz MECO-1 | 199 x 200 x 51.5 | |
| 1323:46 | MES-2 931s | ||
| 1339:18 | MECO-2 | 200? x 5000? x 52.5? | |
| 1538:55 | MES-3 886s | ||
| 1553:41 | MECO-3 | ||
| 1555? | DTB sep | 313 x 19107 x 52.53 | |
| 1829:30 | MES-4 641s | ||
| 1840:11 | MECO-4 | 19142 x 19204 x 64.8 | |
| 1841:22 | Briz sep | ||
November 20,2006
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