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Questions/comments about the content of these pages should be directed to: The World Warning Agency for Satellites, wwas@nssdca.gsfc.nasa.gov National Space Science Data Center, Mail Code 633 NASA Goddard Space Flight Center, Greenbelt, MD 20771 |
| 01 February 1999 |
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1999-002A (25616) ROCSAT 1 27 JAN 99
1999-001A (25605) MPL (Mars Polar Lander) 03 JAN 99
1998-055C (25615) USA 141 03 OCT 98
| 1999-002A | ROCSAT 1 is a Taiwanese (Republic of China) satellite that was launched by an Athena 1 rocket from Cape Canaveral at 12:34 UT. It carries color cameras to monitor ocean surface, and instruments to probe ionospheric plasma. Initial orbital parameters were period 96.6 min, apogee 601 km, perigee 589 km, and inclination 35.0 deg. |
|---|---|
| 1999-001A | MPL (Mars Polar Lander) is an American planetary exploration probe that was launched by a Delta 2 rocket from Cape Canaveral at 20:21 UT. After cruising for 11 months, it is scheduled to land on Mars on 3 December 1999 at a latitude of 75 deg-S. The four meter diameter, one meter tall, and 560 kg probe will land on its three legs after deceleration by a retro-thruster and a parachute. A two meter robotic arm equiped with a scoop will scrape the surface to collect dirt. The dirt will be heated in a chamber so that the vaporized water (if present) could be detected by a laser equipment. The lander also carries a "hearing aid" to listen and relay any sound waves (that may be excited by sand storms, or botanical objects). Soon after landing, MPL will shoot two microprobes which are expected to penetrate one meter into the soil and look for water with the help of a vaporizer and a detection laser. (One meter depth is likely to map as 100,000 years of geology.) If found, and if the transmitters had survived the impact, they will send the data to MPL. Further information is available at http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1999-001A. |
| 1998-055C | USA 141 is an American military reconnoissance spacecraft that was launched by a Taurus rocket from Vandenberg AFB. The reason for the long delay in announcing is not available. |
The last full list appeared as a part of SPX 520. A supplementary list appeared as a part of SPX 542. The full list will reappear only after further major updates.
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: igscb@cobra.jpl.nasa.gov
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.
The latest member of the GPS fleet is NAVSTAR 38 (1997-067A), launched on 6 November 1997.
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-515. It will not be repeated in view of the excellent updated source at: http://www.rssi.ru/SFCSIC/glonass.html maintained by the Coordinational Scientific Information Center (CSIC),Russian Space Forces.
The latest additions to the GLONASS fleet are,
1998-077A (25593) COSMOS 2362 Launched on 30 December 1998
1998-077B (25594) COSMOS 2363 " "
1998-077C (25595) COSMOS 2364 " "
Designations Common Name 1999 1999-002B (25617) OAM (Orbit Adjust Module) 29 Jan 1997-074C (25065) R/B H-2 27 Jan 1998-074C (25579) R/B Long March 3 20 Jan 1998-062C (25533) Sputnik 41 11 Jan 1991-017B (21148) R/B Titan 4 09 Jan 1970-085A (04583) Meteor 1-6 08 Jan 1998-066F (25532) R/B Delta 2 07 Jan 1998-046J (25421) R/B Pegasus 04 Jan
NSSDC/WDC-A-R&S is an archival center for science data from many spacecraft.
Some data are on line for electronic access. Please contact the NSSDC Request Coordination
Office,
Code 633, NASA/GSFC, Greenbelt, Maryland 20771, U.S.A., for specific
information (request@nssdca.gsfc.nasa.gov).
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 FTP'ed from NSSDC's ANON_DIR:[000000.ACTIVE] and its
several subdirectories. (See About the SPACEWARN Bulletin
for access method; a file in the ACTIVE directory named AAREADME.DOC, outlines the contents.)
It can also be accessed via the WWW at:
http://sscop1.gsfc.nasa.gov/ssc.html
This URL also enables executing several codes related to the orbits
of many geocentric science payload spacecraft. The codes related to
the heliospheric spacecraft trajectories can be executed through:
http://nssdc.gsfc.nasa.gov/space/helios/heli.html
Magnetospheric, Planetary, and Astronomical science data from many spacecraft
may be accessed through links from the URL:
http://nssdc.gsfc.nasa.gov/
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Questions/comments about the content of these pages should be directed to: The World Warning Agency for Satellites, wwas@nssdca.gsfc.nasa.gov National Space Science Data Center, Mail Code 633 NASA Goddard Space Flight Center, Greenbelt, MD 20771 |