|01 October 1998|
1998-054A (25485) Molniya 1-91 28 Sep 1998-053H (25482) ORBCOMM-FM 28 23 Sep 1998-053G (25481) ORBCOMM-FM 27 23 Sep 1998-053F (25480) ORBCOMM-FM 26 23 Sep 1998-053E (25479) ORBCOMM-FM 25 23 Sep 1998-053D (25478) ORBCOMM-FM 24 23 Sep 1998-053C (25477) ORBCOMM-FM 23 23 Sep 1998-053B (25476) ORBCOMM-FM 22 23 Sep 1998-053A (25475) ORBCOMM-FM 21 23 Sep 1998-052A (25473) PAS 7 16 Sep 1998-051E (25471) Iridium 77 08 Sep 1998-051D (25470) Iridium 79 08 Sep 1998-051C (25469) Iridium 80 08 Sep 1998-051B (25468) Iridium 81 08 Sep 1998-051A (24467) Iridium 82 08 Sep
|1998-054A||Molniya 1-91 is a Russian military communications spacecraft that was launched by a Molniya-M rocket from Plesetsk at 23:41 UT. Initial orbital parameters were period 12hr:17min, apogee 40,860 km (in the Northern Hemisphere), perigee 457 km, and inclination 62.8 deg.|
|ORBCOMM-FM 21, -FM 22, -FM 23, -FM 24, -FM 25, -FM 26, -FM 27, and -FM 28 are the latest to join the ORBCOMM fleet. These American spacecraft were launched at 05:06 UT by a Pegasus rocket released from a L-1011 aircraft flying out of Wallops Island in Virginia (USA). The fleet enables voice and data communications from/to remote stations. Initial orbital parameters of all were similar: period 101 min, apogee 830 km, perigee 820 km, and inclination 45 deg.|
|1998-052A||PAS 7 (PanAmSat 7) is an American geostationary communications spacecraft that was launched by an Ariane 44LP rocket from Kourou at 06:31 UT. The 3,838 kg satellite carries 40 Ku-band and 18 C-band transponders to provide voice and video communications to Europe and West Asia, after parking at 68.5-E longitude.|
|Iridium 82, 81, 80, 79, and 77 are the latest batch to join the American Iridium fleet. They were launched by a Delta 2 rocket from Vandenberg AFB to replace the dysfunctional members of the fleet. The fleet provides telephone links between sites far away from cellular networks. Initial orbital parameters of all five were similar: period 95 min, apogee 540 km, perigee 520 km, and inclination 86 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: email@example.com
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 1997-028D (24830) R/B Proton-K 29 Sep 1997-065B (25020) R/B Atlas 2A 27 Sep 1990-102E (20957) R/B of GORIZONT 2 27 Sep 1998-048C (25433) R/B Long March 3 21 Sep 1983-038E (14041) R/B of COSMOS 1457 08 Sep 1993-010G (22524) R/B Proton-1 05 Sep 1988-012C (18879) R/B H-1 05 Sep 1978-039C (10794) R/B Delta 1 04 Sep
The MOC camera on Mars Global Surveyer was turned off on 13 September 1998; it will be turned on after the spacecraft achieves a lower orbit in March 1999.
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
Code 633, NASA/GSFC, Greenbelt, Maryland 20771, U.S.A., for specific
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:
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:
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