|01 July 2000|
2000-035A (26390) Sirius 1 30 Jun 2000-034A (26388) TDRS 8 30 Jun 2000-033C (26386) SNAP 1 28 Jun 2000-033B (26385) Tzinghua 1 28 Jun 2000-033A (26384) Nadezhda 28 Jun 2000-032A (26382) Fengyun 2 25 Jun 2000-031A (26378) Express A3 24 Jun 2000-030A (26374) TSX 5 07 Jun 2000-029A (26372) Gorizont 33 06 Jun
|2000-035A||Sirius 1 is an American geosynchronous communications spacecraft that was launched by a Proton-K rocket from Baikonur at 22:09 UT. It is to provide 100 S-band channels of commercial-free, digital, CD-quality music, news, and entertainment (including "Car Talk") mainly to motorists in the continental USA. Most broadcasts will originate from New York, and the satellite-relayed signals will be rebroadcast by a network of 105 transmitters in dense urban areas. Listening requires a special, factory-installed receiver and, of course, a monthly subscription fee. Two more Sirius satellites are to be launched in September and October 2000. Sirius 1 will probably be parked near 100 deg-W longitude.|
|2000-034A||TDRS 8 is an American Tracking and Data Relay Satellite in geosynchronous orbit and was launched by an Atlas 2A rocket from Cape Canaveral at about 13:00 UT. This brings to seven the number of operational spacecraft in this fleet. (TDRS B had perished on the Challenger shuttle in 1986.) The 2,910 kg (dry), 2.04 kW spacecraft carries two steerable, 5-m diameter dishes to enable many channels in C-, Ku-, and Ka-bands, with rates of 300 Mbits/s in the Ku-band, and 800 Mbits/s in the Ka-band. In addition, a phased array antenna in C-band can receive signals from five different spacecraft simultaneously, while transmitting to one of them.|
|2000-033C||SNAP 1 is a British, student-built, 8 kg nanosatellite that was launched by a Cosmos-3M rocket from Plesetsk at 12:13 UT. It is to demonstrate the successful assembly of a satellite with commercially available miniature electro-mechanical parts. Initial orbital parameters were period 98.7 min, apogee 703 km, perigee 677 km, and inclination 98.12 deg|
|2000-033B||Tzinghua 1 is a Chinese (PRC) 50 kg microsatellite that was launched by a Cosmos-3M rocket from Plesetsk at 12:13 UT. It is a demonstration model of a future seven-satellite fleet that will monitor natural disasters and help train students. Initial orbital parameters were period 98.7 min, apogee 703 km, perigee 677 km, and inclination 98.12 deg|
|2000-033A||Nadezhda (meaning Hope) is a Russian search and relay spacecraft intended to locate ships or aircraft in distress. It is a member of the international COSPAS/SARSAT fleet of such satellites. Since the previous one was Nadezhda 5 (1998-072A/25567), this latest should be designated as Nadezhda 6. It was launched by a Cosmos-3M rocket from Plesetsk at 12:13 UT. The operating frequencies are the internationally dedicated 150.00 and 400.00 MHz. Initial orbital periods were period 98.7 min, apogee 703 km, perigee 677 km, and inclination 98.12 deg.|
|2000-032A||Fengyun 2 is a Chinese (PRC) geosynchronous meteorological spacecraft that was launched by a Long March 3 rocket from Xichang launch center in Sichuan province at 11:50 UT. (There was another Fengyun 2 launched in 1997, and two Fengyun 1 launched in 1988 and 1990.) It is equipped with a scanning radiometer, a cloud mapper, and a water vapor scanner to provide timely weather data, after parking over 105 deg-E longitude.|
|2000-031A||Express A3 is a Russian geosynchronous communications spacecraft that was launched by a Proton-K rocket from Baikonur at 00:28 UT. The 2,600 kg spacecraft will provide relaying service for television and radio programs, and telephone service in digital format throughout Russia after parking, probably, over 120 deg-E longitude.|
|2000-030A||TSX 5 (Tri-Service eXperiments 5)is an American military spacecraft that was launched at 14:20 UT by a Pegasus rocket released from a L-1011 cargo plane flying out of Vandenberg AFB. It carries a compact environmental anomaly sensor (CEASE) to probe the near-spacecraft environment. Also on board are the STRV-2 and MWIR instruments: the former to experiment with laser communications between spacecraft and the latter to provide infrared images of flying aircraft. More details may be available by surfing http://www.te.plk.af.mil/tsx5home/tsx5.htm. Initial orbital parameters were period 106 min, apogee 1,704 km, perigee 404 km, and inclination 69 deg.|
|2000-029A||Gorizont 33 is a Russian geosynchronous communications spacecraft that was launched by a Proton-K rocket at 02:59 UT from Baikonur. It is a dual-use spacecraft: to provide improved television coverage in eastern parts of Russian, and to further military communications.|
Note: The full list appeared in SPX 545. The list will not be repeated in future issues until significantly revised again.
High precision (<20 cm) GPS constellation tracking data obtained from the network of about 80 dedicated global stations that are of interest to geodetic study may be obtained through the following services provided by the International Association of Geodesy (IGS)
FTP: igscb.jpl.nasa.gov [directory /igscb] WWW: http://igscb.jpl.nasa.gov/ E-mail: firstname.lastname@example.org
The standard format of the GPS situation appeared in SPX-518. It will not be repeated since an excellent source of trajectory- and science-related GPS information is at http://www.utexas.edu/depts/grg/gcraft/notes/gps/gps.html#DODSystem It provides many links to GPS related databases.
All GLONASS spacecraft are in the general COSMOS series. The COSMOS numbers (nnnn) invoked by USSPACECOM have often differed from the numbers (NNNN) associated in Russia; when different, the USSPACECOM COSMOS numbers are shown in parentheses. The corresponding GLONASS numbers are Russian numbers, followed by the numbers in parentheses that are sometimes attributed to them outside Russia.
The operating frequencies in MHz are computed from the channel number K. Frequencies (MHz) = 1602.0 + 0.5625K and L2 = 1246.0 + 0.4375K.
The standard format of the GLONASS situation appeared in SPX-545. It will not be repeated in view of the excellent updated source at: http://www.rssi.ru/SFCSIC/english.html maintained by the Coordinational Scientific Information Center (CSIC),Russian Space Forces.
Designations Common Name Decay Date (2000) 1989-094B (20339) R/B Molniya 8K78M 27 Jun 2000-031B (26379) R/B Proton-K 26 Jun 1979-012A (11268) COSMOS 1077 26 Jun 2000-026C (26367) R/B Rokot 21 Jun 1986-068A (16934) MOLNIYA 1-68 20 Jun 2000-018A (26116) SOYUZ-TM 30 16 Jun 1979-099A (11629) COSMOS 1145 16 Jun 1978-045A (10860) COSMOS 1005 15 jun 1996-027B (23858) R/B Atlas 1/Centaur 09 Jun 1996-007B (23782) R/B Ariane 44P 07 Jun 1991-027B (21225) GRO (Controlled deorbit/re-enter) 04 Jun 1998-012C (25235) R/B Pegasus 25 May 1990-015A (20496) LACE (USA 51) 24 May
NSSDC/WDC for Satellite Information is an archival center for science
data from many spacecraft. Many space physics datasets are on-line for
electronic access through:
For off-line data, please contact the Request Office, NSSDC, Code 633, NASA GSFC, Greenbelt, Maryland 20771, U.S.A., for specific information (email@example.com). Information on the current status of the instruments on board from the investigators will be most welcomed. Precomputed trajectory files and orbital parameters of many magnetospheric and heliospheric science-payload spacecraft may be accessed via anonymous FTP from NSSDC. (See About the SPACEWARN Bulletin for access method; a file in the active directory named AAREADME.TXT, outlines the contents.)
Other files interest for Earth-centered spacecraft can be generated through the URL,
Programs related to the heliospheric spacecraft trajectories can be executed
through the URL,
Magnetospheric, Planetary, and Astronomical science data from many spacecraft
may be accessed through links from the URL:
Questions/comments about the content of these pages should be directed to:
The World Warning Agency for Satellites, firstname.lastname@example.org
National Space Science Data Center, Mail Code 633
NASA Goddard Space Flight Center, Greenbelt, MD 20771