SPACEWARN BULLETIN
                         -------------------
This Bulletin is intended to serve as an international communication mechanism 
for the rapid distribution of information on satellites and space probes.  
The material it contains is based on guidelines in "COSPAR Guide to Rocket and 
Satellite Information and Data Exchange", COSPAR Transactions #8, December 
1972, and various Committee on Space Research (COSPAR) resolutions. 

The SPACEWARN Bulletin is issued to COSPAR's national contacts for satellite 
information, Satellite Regional Warning Centers, and various leaders and 
participants in COSPAR activities.  Recipients are requested to arrange for 
any further appropriate distribution of this bulletin to interested individuals
and institutions in their regions or countries.  All bulletins beginning with
January 1991 (SPX-447) are now available on-line; the SPX number increases by 
one for each succeeding month (for example January 1993 bulletin is SPX-471).

 Through DECnet: at prompt type:copy nssdca::anon_dir:[active.spx]spx.471  *.*
 Through FTP: 	at prompt type:  ftp nssdca.gsfc.nasa.gov 
  at the next prompt type:  anonymous
  at the PASSWORD (NSSDCA.GSFC.GOV.ANONYMOUS) prompt hit:   return
  at the next prompt type: get anon_dir:[000000.active.spx]spx.471 spx.471

Users are urged to submit their comments and suggestions for the improvement 
of this bulletin to Spacewarn Bulleltin, World Data Center-A for Rockets and 
Satellites, Code 930.2, Goddard Space Flight Center, Greenbelt, Maryland 20771
U.S.A.


CATEGORIES OF SPACECRAFT

To improve the effectiveness of international distribution of satellite and 
space probe information via the SPACEWARN system, spacecraft are identified 
in categories according to the urgency and detail of information needed by 
the scientific community as: 

CATEGORY  I:	Spacecraft particularly suited for international participation,
especially those for which prior arrangements have been circulated through 
COSPAR channels:  essentially continuous satellite radio beacons usually on 
frequencies less than 150 MHz designed for cooperative ionospheric experiments;
satellites with continuous telemetry of scientific experiments. Some 
of these may be balloon satellites, flashing satellites, or satellites in 
orbits of particular interest for which optical observations from the ground 
constitute a scientific experiment.

CATEGORY II:	Space experiments of unusual general scientific or popular 
interest:  manned space flights or space probes if not for some reason included
in Category I.

CATEGORY III:	All other space experiments:  satellites with command telemetry
only, test vehicles, etc., if not included in Category I or II.

The SPACEWARN Bulletin contains the following information.  Please note the 
accompanying explanations, where appropriate, as to coverage and sources of 
information since this is not repeated in the text.

A.	List of Recent International Designations.  This list continues the 
tables given in previous bulletins.It also confirms the tentative designations
assigned by the IUWDS World Warning Agency for Satellites acting on behalf 
of COSPAR via telegrams distributed over the SPACEWARN system.

B.	Texts of Launching Announcements.  This section gives the texts of 
launching announcements of satellites and space probes received by the IUWDS 
World Warning Agency for Satellites at the NSSDC/WDC-A-R&S during the previous 
month. 

C.	Spacecraft  Particularly Suited for International Participation 
(Category I).  These data are based on launching announcements or on 
information received from individuals, launching authorities, FBIS reports, 
and news magazines. Also included are decays of major objects, and 
miscellanous items.