From: SMTP%"lang@unb.ca" 29-NOV-2000 08:40:15.57 To: SARDI CC: Subj: Navstar GPS Constellation Status (00-11-21) Date: Wed, 29 Nov 2000 09:47:27 -0400 (AST) From: Richard Langley Navstar GPS Constellation Status (00-11-21) Blk NORAD Orbit Launch II PRN Internat. Catalog Plane Date Seq SVN Code ID Number Pos'n (UT) Clock Available/Decommissioned ------------------------------------------------------------------------------- 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-3 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 A-5 89-10-21 Cs 89-11-23 03:13 UT II-5 17 17 1989-097A 20361 D-3 89-12-11 Cs 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-4 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 Cs 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 Cs 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 Cs 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-5 00-07-16 Rb 00-08-17 13:51 UT IIR-6 41 14 2000-071A 26605 F-1 00-11-10 Rb 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". PRN14/SVN14 was set unusable on 26 March 2000 at 23:48 UT and subsequently decommissioned on 14 April 2000 at 13:47 UT (ref. NANUs 2000037 and 2000054). PRN16/SVN16 was removed from service on 27 July 2000 at 07:07 UT (ref. NANU 2000123). Its L-band signals were turned off on 14 September 2000 at 13:42 UTC (ref. GPS Support Center) and the satellite was decommissioned from active service on 13 October 2000 at 00:45 UTC (General Message to all GPS Users from 2SOPS). PRN18/SVN18 was removed from service on 28 June 2000 at 13:19 UT (ref. NANU 2000109). The satellite lost a reaction wheel on 10 July 2000 and subsequently a thruster stuck in the open position (ref. GPS Support Center). The satellite was decommissioned from active service on 18 August 2000 at 07:42 UT (ref. NANU 2000133). PRN20/SVN20 had been unusable since 10 May 1996 according to NANU 118-96204 although it was set usable between 07:36 UT on 20 May 1996 and 22:42 UT on 21 May 1996 (ref. NANUs 094-96141 and 095-96142). Disposed of on 13 December 1996 (ref. USNO). PRN28/SVN28 was last usable on 4 November 1996 at 16:34 UT (ref. NANU 179-96309). It was declared inoperable in May 1997. It was removed from the broadcast almanacs of all satellites on 15 August 1997. See Navstar GPS Constellation Status report of 6 November 1997 for more information. 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. PRN13/SVN43 was moved from slot F-5 to F-3 (ref. NANUs 2000121 and 2000167). 10. PRN20/SVN51 was launched on 11 May 2000 at 01:48 UT. It was set usable on 1 June 2000 at 16:09 UT (ref. NANU 2000091). 11. PRN24/SVN24 was unusable from 17:42 UT on 7 September 2000 to 20:20 UT on 11 September 2000 due to change in operational clock from Rubidium #2 to Cesium #4 (ref. NANU 2000140). 12. PRN28/SVN44 was launched on 16 July 2000 at 09:17 UT. It was set usable on 17 August 2000 at 13:51 UT (ref NANU 2000131). 13. PRN29/SVN29 is drifting from slot F-1 to F-5. 14. PRN14/SVN41 was launched on 10 November 2000 at 17:14 UT. It will reside in slot F-1, replacing PRN29. It is expected to become operational by 8 December 2000. 15. The satellites in planes A and F have been re-phased. This version of the constellation status table indicates the re-phased slot locations. 16. Compiled by Richard B. Langley, Dept. of Geodesy and Geomatics Engineering, University of New Brunswick. =============================================================================== Richard B. Langley E-mail: lang@unb.ca Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ Dept. of Geodesy and Geomatics Engineering Phone: +1 506 453-5142 University of New Brunswick Fax: +1 506 453-4943 Fredericton, N.B., Canada E3B 5A3 Fredericton? Where's that? See: http://www.city.fredericton.nb.ca/ ===============================================================================