Navstar GPS Constellation Status
                                   (02-07-12)

Blk                      NORAD   Orbit   Launch
II       PRN  Internat. Catalog  Plane    Date
Seq  SVN Code    ID      Number  Pos'n    (UT)   Clock Available/Decommissioned
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Block I
      01  04  1978-020A  10684          78-02-22        78-03-29     85-07-17
      02  07  1978-047A  10893          78-05-13        78-07-14     81-07-16
      03  06  1978-093A  11054          78-10-06        78-11-13     92-05-18
      04  08  1978-112A  11141          78-12-10        79-01-08     89-10-14
      05  05  1980-011A  11690          80-02-09        80-02-27     83-11-28
      06  09  1980-032A  11783          80-04-26        80-05-16     91-03-06
      07                                81-12-18        Launch failure
      08  11  1983-072A  14189          83-07-14        83-08-10     93-05-04
      09  13  1984-059A  15039          84-06-13        84-07-19     94-06-20
      10  12  1984-097A  15271          84-09-08        84-10-03     95-11-18
      11  03  1985-093A  16129          85-10-09        85-10-30     94-04-13


Block II
II-1  14  14  1989-013A  19802          89-02-14        89-04-15     00-04-14
II-2  13  02  1989-044A  20061    B-5   89-06-10   Cs   89-08-10 20:46 UT
II-3  16  16  1989-064A  20185          89-08-18        89-10-14     00-10-13
II-4  19  19  1989-085A  20302          89-10-21        89-11-23     01-09-11
II-5  17  17  1989-097A  20361    D-3   89-12-11   Rb   90-01-06 03:30 UT
II-6  18  18  1990-008A  20452          90-01-24        90-02-14     00-08-18
II-7  20  20  1990-025A  20533          90-03-26        90-04-18     96-05-10
II-8  21  21  1990-068A  20724    E-2   90-08-02   Cs   90-08-22 15:00 UT
II-9  15  15  1990-088A  20830    D-5   90-10-01   Cs   90-10-15 00:39 UT

Block IIA
II-10 23  23  1990-103A  20959    E-5   90-11-26   Cs   90-12-10 23:45 UT
II-11 24  24  1991-047A  21552    D-1   91-07-04   Cs   91-08-30 04:44 UT
II-12 25  25  1992-009A  21890    A-2   92-02-23   Cs   92-03-24 11:00 UT
II-13 28  28  1992-019A  21930          92-04-10        92-04-25     97-05
II-14 26  26  1992-039A  22014    F-2   92-07-07   Rb   92-07-23 19:43 UT
II-15 27  27  1992-058A  22108    A-4   92-09-09   Rb   92-09-30 20:08 UT
II-16 32  01  1992-079A  22231    F-4   92-11-22   Cs   92-12-11 14:49 UT
II-17 29  29  1992-089A  22275    F-5   92-12-18   Rb   93-01-05 16:39 UT
II-18 22  22  1993-007A  22446    B-1   93-02-03   Rb   93-04-04 05:20 UT
II-19 31  31  1993-017A  22581    C-3   93-03-30   Rb   93-04-13 20:53 UT
II-20 37  07  1993-032A  22657    C-4   93-05-13   Rb   93-06-12 16:15 UT
II-21 39  09  1993-042A  22700    A-1   93-06-26   Cs   93-07-20 12:54 UT
II-22 35  05  1993-054A  22779    B-4   93-08-30   Cs   93-09-28 19:29 UT
II-23 34  04  1993-068A  22877    D-4   93-10-26   Rb   93-11-22 18:20 UT
II-24 36  06  1994-016A  23027    C-1   94-03-10   Cs   94-03-28 14:20 UT
II-25 33  03  1996-019A  23833    C-2   96-03-28   Cs   96-04-09 21:17 UT
II-26 40  10  1996-041A  23953    E-3   96-07-16   Cs   96-08-15 15:05 UT
II-27 30  30  1996-056A  24320    B-2   96-09-12   Rb   96-10-01 15:28 UT
II-28 38  08  1997-067A  25030    A-3   97-11-06   Rb   97-12-18 15:24 UT

Block IIR
IIR-1 42  12                            97-01-17        Launch failure
IIR-2 43  13  1997-035A  24876    F-3   97-07-23   Rb   98-01-31 00:57 UT
IIR-3 46  11  1999-055A  25933    D-2   99-10-07   Rb   00-01-03 15:02 UT
IIR-4 51  20  2000-025A  26360    E-1   00-05-11   Rb   00-06-01 16:09 UT
IIR-5 44  28  2000-040A  26407    B-3   00-07-16   Rb   00-08-17 13:51 UT
IIR-6 41  14  2000-071A  26605    F-1   00-11-10   Rb   00-12-10 21:12 UT
IIR-7 54  18  2001-004A  26690    E-4   01-01-30   Rb   01-02-15 15:51 UT


Notes
-----
1.  NORAD Catalog Number is also known as U.S. Space Command (USSPACECOM)
    object number and NASA catalog number.
2.  No orbital plane position = satellite no longer operational.
3.  Clock:  Rb = Rubidium; Cs = Cesium.
4.  Selective Availability (S/A) had been enabled on Block II satellites during
    part of 1990; S/A off between about 10 August 1990 and 1 July 1991 due to
    Gulf crisis; standard level re-implemented on 15 November 1991;
    occasionally off for test and other purposes.  S/A was set to 0 on all 
    satellites by presidential order on 2 May 2000 at approximately 04:00 UT.
5.  Anti-spoofing (A-S) was activated on 31 January 1994 at 00:00 UT on all 
    Block II satellites (ref. NANU 050-94042); occasionally off for test and 
    other purposes.
6.  Decommissioning dates:
    The decommissioning date for PRN06/SVN03 is the date of termination of
    operations of this satellite (ref. USNO) and is about 3 weeks later than
    other published dates for "deactivation".
    See earlier Navstar GPS Constellation Status reports for information on 
    the decommissioning of inactive satellites.
7.  PRN number of SVN32 was changed from 32 to 01 on 28 January 1993.
8.  PRN05 and PRN06 are equipped with corner-cube reflectors for satellite
    laser ranging (SLR).  SLR tracking of the satellites will permit onboard
    clock errors and satellite ephemeris errors in GPS tracking to be
    differentiated.
9.  PRN2/SVN13 has been moved, changing its orbital slot from B-3 to B-5    
    (ref. NANU 2002056, USCG NavCen).
10. The active clock on PRN27/SVN27 was switched from Cs3 to Rb2 on 10 June 
    2002 (ref. NANU 2002101, USNO, and NIMA).
11. PRN28/SVN44's slot designation has changed from B-5 to B-3 as a result of 
    the PRN2/SVN13 move.
12. PRN29/SVN29 continues to drift within the F-plane to a new F-5 slot     
    position.
13. The active clock on PRN31/SVN31 was switched from Cs3 to Rb1 on 15 April 
    2002 (ref. NANU 2002061, USNO, and NIMA).
14. The next satellite to join the constellation is IIR-8, currently scheduled 
    for launch in September 2002.
15. Compiled by Richard B. Langley, Dept. of Geodesy and Geomatics Engineering,
    University of New Brunswick.