Saturday, November 25, 2000
Thursday, November 23, 2000
T1
1998-012B
Teledesic's first satellite, T1, was an Orbital/Dulles Microstar class experimental satellite with a Boeing Ka-band comms payload. T1 was launched together with SNOE on a Pegasus XL in Feb 1998. Prior to launch, a cover story was put out that the satellite was BATSAT, the Broadband Advanced Technology Sat, a Texas Space Grant Consortium small technology satellite which would transmit test signals at Ka and X band to study signal attenuation in conjunction with JPL/DSN. The connection with Teledesic only came out once the satellite was in orbit.
The satellite is 154lb and 0.64m diameter.
| T1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1998 Feb 26 | 0605 | L-1011 takeoff from VAFB | |
| 0707 | Pegasus XL launch over Pacific | ||
| Stage 2 burn | |||
| Stage 3 burn | |||
| SNOE sep | |||
| T1 sep | |||
| 1998 Feb 28 | 1738 | 95.81 534 x 581 x 97.8 | |
| 1998 Aug 19 | 1604:13 | end of ops | |
| 2000 Oct 9 | Reentered | ||
Wednesday, November 22, 2000
Tuesday, November 21, 2000
Fleetsatcom 1
1978-016A
The first US Navy Fleet Communications Satellite, FLTSATCOM F1, was launched on 1978 Feb 9 by an Atlas Centaur and stationed at 100W, the FLTSATCOM America position.
| FLTSATCOM F1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1978 Feb 9 | 2117:01 | Launch by Atlas Centaur | CC |
| T+2:21 Booster sep | |||
| T+4:08 SECO | |||
| T+4:08 Atlas sep | |||
| 2121 | T+4:18 MES-1 | ||
| Fairing | |||
| 2127 | T+10:04 MECO-1 | 148 x 368 x 28.5 | |
| 2142 | T+25:10 MES-2 1:37 | ||
| 2143 | T+26:47 Centaur MECO | 167 x 35957 x 26.46 | |
| 2146 | Centaur sep | 620.4 172 x 35263 x 26.4 | |
| 2150? | Centaur venting | ||
| 16C,D in Centaur orbit | |||
| 633.98 165 x 35970 x 26.5 (TLE) | |||
| 1978 Feb 10 | 0300? | Apo 1 | |
| 1400? | Apo 2 | ||
| 2330? | Apo 3 | ||
| 1978 Feb 11 | |||
| 1100? | Apo 4 over 20W | ||
| 2100? | Apo 5 over 170W | ||
| 1978 Feb 11 | 2045? | Star 37 AKM burn at 5th apo | |
| 1978 Feb 13 | 1440.40 35716 x 36025 x 2.7 GEO 171.6W+1.0W | ||
| 1978 Feb 15 | 1426.26 35522 x 35665 x 2.8 GEO 172.4W+2.5E | ||
| 1978 Mar 15 | 1426.15 35522 x 35660 x 2.7 GEO 101.5W+2.5E | ||
| 1978 Mar 16? | mv in | ||
| 1978 Apr 14 | 1436.01 35752 x 35817 x 2.7 GEO 100.7W+0.0E | ||
| 1978 May 2 | 1436.03 35741 x 35829 x 2.6 GEO 100.4W | ||
| 1979 Jan 4 | 1436.06 35778 x 35792 x 2.1 GEO 99.5W | ||
| 1980 Jan 29 | 1436.03 35776 x 35794 x 1.3 GEO 99.8W | ||
| 1981 Jan 2 | 1436.02 35770 x 35800 x 0.8 GEO 100.0W | ||
| 1982 Jan 1 | 1436.18 35765 x 35810 x 0.8 GEO 100.2W | ||
| 1983 Jan 5 | 1436.11 35761 x 35811 x 1.5 GEO 99.3W | ||
| 1984 Jan 1 | 1436.05 35770 x 35800 x 2.4 GEO 99.7W | ||
| 1986 Jan 1 | 1436.18 35785 x 35792 x 4.2 GEO 100.4W | ||
| 1987 Aug 11 | 1436.20 35759 x 35818 x 5.7 GEO 100.7W | ||
| 1987 Aug 31 | mv out | 1442.80 35910 x 35925 x 5.8 GEO 127.4W+1.7W | |
| 1987 Oct 20 | mv in | 1436.11 35776 x 35797 x 5.9 GEO 177.6W | |
| 1988 Jan 3 | 1436.21 35771 x 35806 x 6.1 GEO 177.3W | ||
| 1989 Jan 1 | Backup status | 1436.20 35775 x 35801 x 7.0 GEO 177.2W | |
| 1990 Jan 14 | 1436.06 35765 x 35806 x 8.0 GEO 176.7W | ||
| 1992 Sep 4 | 1436.02 35773 x 35796 x 10.3 GEO 177.2W | ||
| 1992 Sep 8 | mv out | 1473.69 36495 x 36543 x 10.3 | |
| 1992 Oct | Moved to AOR | ||
| 1992 Oct 6 | mv in | 1436.17 35765 x 35811 x 10.3 GEO 15.4W | |
| 1993 Jan 2 | 1436.08 35777 x 35795 x 10.5 GEO 14.5W | ||
| 1994 Jan 4 | 1436.05 35777 x 35792 x 11.3 GEO 14.6W | ||
| 1996 Dec 17 | 1436.08 35766 x 35806 x 13.0 GEO 15.0W | ||
| 1996 Dec 23 | Move out to IOR | GEO 15W | |
| 1996 Dec 26 | mv out | 1427.65 35612 x 35630 x 13.0 GEO 0.3E+2.2E | |
| 1997 Feb 12 | mv in | 1436.11 35766 x 35807 x 13.1 GEO 72.3E | |
| 1997 Mar 4 | 1436.11 35762 x 35811 x 13.1 GEO 72.2E | ||
Monday, November 20, 2000
Sunday, November 19, 2000
Mars Climate Orbiter
1998-073A
The Mars Surveyor 1998 Orbiter was named the Mars Climate Orbiter. MS98 Orbiter will be launched by Delta 7425 on 10 Dec 1998 onto a Type 2 trajectory. It is built by Lockheed Martin Astronautics, Denver. MCO arrives at Mars in Sep 1999. Mass is 629 kg full, 338 kg dry with 291 kg fuel. Size is 2.1m tall, 1.6m wide, 2.0m deep with 5.5m span. MCO has an equipment module (EM) and a biprop main engine, which is used only for Mars orbit insertion. It will use aerocapture and aerobraking to reach operational orbit.
MS98 will arrive at Mars between Sep 23 and Oct 4. The propulsion engine will fire to place MS98 in a 26 to 36 hr orbit until oxidizer depletion. Aerobraking will then go to sun-synch circular 400 km polar orbit, by Dec 3. The periapsis is over the S pole. The orbiter will serve as a UHF relay for the lander. Two year mapping mission, five year relay mission. The science mission will map the surface at high resolution, and study the distribution of water vapor and ozone. It also will study the transport of dust and water with latitude, the motions of weather systems and dust storms, and study the response to daily solar heating.
PMIRR gives a 5 km resolution vertical profile of temperature, dust, water vapor, and clouds. It also measures the radiative balance of the surface. It has a broadband visible channel and eight channels in the 6 to 50 micron range including high spectral res detectors in the 6.7mu H2O band and the 15 mu CO2 band.
The MARCI WA (wide angle) camera has 5 visible and 2 UV bands, with 7 km resolution in the final orbit. The MA camera has a 40m resolution over a 40 km FOV with ten channels in the visible, 4250A to 1 micron.
A navigation error meant that instead of passing 120 km from the planet, the closest approach was only 60 km. MCO was not heard from after it went behind the planet.
m1/m2 = 629 + 2141/132 = 2770 / 761,
TIP for Dec 10 launch 11.0315 km2/s2, DLA = -142.5576, 14.5768 at 185 km. RA =217.4424, Planned B-plane miss distance was B.R,B.T = (+60000, -60000) km according to the 1996 navigation memo included in the 1997 mission plan databook
| MCO | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1998 Dec 11 | 1845:51 | Launch Delta 7425 | CC LC17A |
| T+1:03 SRM burnout | |||
| T+1:06 SRM 1-4 sep | |||
| T+4:21 MECO | |||
| T+4:29 Stage 1 sep | |||
| T+4:34 Stage 2 burn | |||
| T+4:45 Fairing | |||
| 1857:08 | T+11:17 SECO-1 | 185 x 198 x 28.3 | |
| 1924:32 | T+38:41 Stage 2 restart | ||
| 1924:54 | T+39:03 SECO-2 | 95.53 184 x 905 x 28.4 | |
| 1925:47 | T+39:56 Stage 2 sep | ||
| 1925:24 | T+40:33 Stage 3 burn | ||
| 1927:52 | T+42:01 TECO | 185 x -85207 x 28 | |
| 1932:34 | T+46:43 Yoyo deploy | ||
| 1932:38 | T+46:48 Stage 3 sep | ||
| T+1h? Solar array deploy | |||
| 2005 | T+1:20:00 Delta SES-3 | ||
| 2005 | T+1:20:18 SECO-3 | 95.52 194 x 892 x 24.5 | |
| 1998 Dec 12 | 0418 | Pass EL1:4 | |
| 1998 Dec 16 | 1428? | Depart Earth sphere 1.5Mkm | |
| 1998 Dec 21 | 2133 | TCM-1 2.8min 19.1m/s 2.87Mkm | |
| 1999 Mar 4 | 1335 | TCM-2 8s 0.9m/s 17.8Mkm to Earth | |
| 1999 Jul 25 | 1200 | TCM-3 3.3m/s | |
| 1999 Sep 14 | 1640 | TCM-4 15s, 1.4m/s | |
| 1999 Sep 19 | 1617? | Enter Mars sphere 1.082Mkm | |
| 1999 Sep 21 | 0500? | PAM-D enter Mars sphere | |
| 1999 Sep 23 | 0831 | Solar array stow | |
| 0849:51 | MOI-1 (Leros) 16:23 | 57 x ? x 90 | |
| 0858? | Destroyed? | |
| 0906 | MOI-1 cutoff | ||
| 0900? | PAM-D pass 83000? km from Mars | ||
| Impact Martian surface | |||
| 1999 Sep 25 | 1300? | PAM D depart Mars sphere | |
| Planned post insertion | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1999 Sep 23 | 0920 | Solar array unstow | |
| MOI-2 RCS trim 0 to 7 min | 160 x 38600 x 90 x 29h | ||
| 1999 Sep 24 | AB-1 MOI+14h Peri lower at first apo | 110 x 38600 | |
| Aerobraking | |||
| 1999 Oct 15 | 20h, inc trim | ||
| 1999 Nov 5 | 10h, inc trim | ||
| 1999 Nov 19 | 5 h | ||
| 1999 Nov 22 | End AB | 85 x 390 | |
| 1999 Nov 22 | TMO-1 Exit Aerobraking | 405 x 437 | |
| 1999 Nov 23 | TMO-2 | 373 x 437 | |
| 1999 Dec 1 | Mapping orbit, 4PM SSO | 373 x 437 x 92.9 | |
| 1999 Dec 2 | Lander Support Mission | ||
| 2000 Mar 3 | Mapping Mission begins | ||
| 2002 Jan 15 | Mars Relay Mission begins | ||
29 44
Payload:
- LEROS engine 640N
- TCM thrusters (4 x 22N)
- MARCI MS98 Mars Color Imager: WA wide angle camera 800m res; MA medium angle camera 40m res, for weather studies.
- PMIRR Pressure modulated IR Radiometer
- UHF Lander comms relay