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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 June 1998 |
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1998-033A (25354) China Star 1 30 May 1998-030A (25338) NOAA 15 13 May 1998-032E (25346) Iridium 75 17 May 1998-029A (25336) USA 139 09 May 1998-032D (25345) Iridium 74 17 May 1998-028A (25331) ECHOSTAR 4 07 May 1998-032C (25344) Iridium 73 17 May 1998-027A (25327) Cosmos 2351 07 May 1998-032B (25343) Iridium 72 17 May 1998-026B (25320) Iridium 71 02 May 1998-032A (25342) Iridium 70 17 May 1998-026A (25319) Iridium 69 02 May 1998-031A (25340) Progress M-39 15 May
| 1998-033A | China Star 1 (also known as Zhongwei 1) is a PRC geosynchronous communications spacecraft that was launched at 10:00 UT by a Long March 3B rocket from Xichang Launch Center. The 2,984 kg spacecraft carries 24 C-band and 24 Ku-band transponders to provide voice and video communications throughout China and neighboring countries, after parking at 87.5-E longitude. |
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| 1998-032A, 1998-032B, 1998-032C, 1998-032D, 1998-032E |
Iridium 70, Iridium 72, Iridium 73, Iridium 74, and Iridium 75 are the latest and the final batch of Iridiums that completes the constellation of 66 operational and six reserve satellites. The full constellation will enable telephone calls and data transmissions among fixed/mobile ground stations far removed from cellular areas. They were launched by a Delta 2 rocket from Vandenberg AFB at 21:16 UT. Initial orbital parameters of all were similar: period 98 min, apogee 670 km, perigee 665 km, and inclination 86.6 deg. |
| 1998-031A | Progress M-39 is a Russian automatic cargo craft that was launched by a Soyuz-U rocket from Baikonur at 22:13 UT to dock with and deliver goods to Mir station. It docked with Mir at 23:50 UT on 17 May and delivered 1,500 kg of fuel and another 1,500 kg of food, equipments, and gifts. In late June 1998 Progress M-39 will give a jerk to Mir to initiate progressively lower orbits, leading to its demise in the ocean in December 1999. Initial orbital parameters were period 92 min, apogee 378 km, perigee 371 km, and inclination 51.7 deg. |
| 1998-030A | NOAA 15 (pre-launch: NOAA-K) is an American weather satellite that was launched by a Titan 2 rocket from Vandenberg AFB at 15:52 UT. It carries imaging and sounding instruments to obtain data on cloud coverage, atmospheric temperature, humidity, and ozone concentration. NOAA 15 replaces the decommissioned NOAA 12. Initial orbital parameters of this Sun-synchronous spacecraft were period 101.2 min, apogee 824 km, perigee 808 km, and inclination 98.7 deg. |
| 1998-029A | USA 139 is an American (National Reconnoissance Office) military reconnoissance spacecraft in the MILSTAR 3 series that was launched from Cape Canaveral Air Station by a Titan 4B rocket. |
| 1998-028A | ECHOSTAR 4 is an American geosynchronous spacecraft that was launched by a Proton-K rocket from Baikonur at 23:45 UT. With its 32 transponders, it will provide direct-to-home voice and video communications to the North American continent. As of 1 June 1998, the solar panels still remained unfurled. |
| 1998-027A | Cosmos 2351 is a Russian military satellite that was launched by a Molniya rocket from Plesetsk cosmodrome at 08:53 UT. Initial orbital parameters were period 717.8 min, apogee 39,823 km, perigee 533 km, and inclination 63 deg. |
| 1998-026A, 1998-026B |
Iridium 69 and Iridium 71 are two American communications satellites that were launched by a Long March 2C/SD rocket from Taiyuan Launch Center in PRC at 09:16 UT. They join the previously launched fleet of Iridiums that enable voice and data transmission from locations far away from cellular networks. Initial orbital parameters of both were similar: period 98.1 min, apogee 670 km, perigee 665 km, and inclination 86.6 deg. |
The last full list appeared as a part of SPX 520. The list will reappear only after major updates to the list are available.
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.
Designations Common Name 1998 1997-058C (24958) SPUTNIK Jr 21 May 1998-015A (25256) PROGRESS M-38 16 May 1998-019F (25277) R/B DELTA 2 11 May 1983-038A (14034) COSMOS 1456 11 May 1998-028B (25332) R/B PROTON-K 10 May 1988-069D (19380) R/B of MOLNIYA 1-73 10 May 1991-003C (21057) R/B ARIANE 44L 08 May 1998-022A (25297) STS 90 Landed on 03 May
MAGION 5 (1996-050B), a Czech subsatellite of Interball Aurora that has remained mute since its launch, was activated to normalcy on 14 May 1998. It remains operational.
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 trjectories 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 |