GLONASS Constellation Status (11-11-19) GLONASS M? Kosmos Internat. NORAD Plane Channel Almanac Launch Status Numbers Number ID Catalog Number Date (Date Number (Slot) (UTC) withdrawn) ------------------------------------------------------------------------------- 80 786 2362 1998-077C 25595 30-Dec-98 20-Oct-03 81 784 2363 1998-077B 25594 30-Dec-98 19-Dec-03 82 779 2364 1998-077A 25593 30-Dec-98 8-Jul-02 83 783 2374 2000-063C 26566 13-Oct-00 23-Nov-07 84 787 2375 2000-063A 26564 13-Oct-00 16-Apr-07 85 788 2376 2000-063B 26565 13-Oct-00 29-Mar-06 86 790 2380 2001-053C 26989 1-Dec-01 19-Dec-03 87 789 2381 2001-053B 26988 1-Dec-01 11-Jan-08 88 711 M* 2382 2001-053A 26987 1-Dec-01 11-Jan-08 89 791 2394 2002-060A 27617 25-Dec-02 30-Nov-07 90 792 2395 2002-060C 27619 25-Dec-02 12-Jan-08 91 793 2396 2002-060B 27618 25-Dec-02 16-Apr-07 92 701 M 2404 2003-056A 28112 10-Dec-03 27-Feb-10 93 794 2402 2003-056B 28113 10-Dec-03 11-Jan-08 94 795 2403 2003-056C 28114 10-Dec-03 18-Aug-09 95 712 M 2413 2004-053B 28509 1 5 7 26-Dec-04 OK 96 797 2412 2004-053C 28510 26-Dec-04 16-Oct-08 97 796 2411 2004-053A 28508 26-Dec-04 18-Oct-08 98 798 2417 2005-050C 28917 25-Dec-05 12-Jan-08 99 713 M 2418 2005-050B 28916 25-Dec-05 28-Feb-10 100 714 M 2419 2005-050A 28915 3 4 17 25-Dec-05 OK 101 715 M 2424 2006-062C 29672 2 -7 14 25-Dec-06 OK 102 716 M 2425 2006-062A 29670 2 0 15 25-Dec-06 OK 103 717 M 2426 2006-062B 29671 2 -7 10 25-Dec-06 OK 104 718 M 2431 2007-052C 32277 26-Oct-07 20-Oct-11 105 719 M 2432 2007-052B 32276 3 2 20 26-Oct-07 OK 106 720 M 2433 2007-052A 32275 3 3 19 26-Oct-07 OK 107 721 M 2434 2007-065A 32393 2 -2 13 25-Dec-07 OK 108 722 M 2435 2007-065B 32394 2 14 25-Dec-07 Res 109 723 M 2436 2007-065C 32395 2 0 11 25-Dec-07 OK 110 724 M 2442 2008-046A 33378 3 -3 18 25-Sep-08 OK 111 725 M 2443 2008-046B 33379 3 4 21 25-Sep-08 OK 112 726 M 2444 2008-046C 33380 3 22 25-Sep-08 Main 113 727 M 2447 2008-067A 33466 1 3 25-Dec-08 Main 114 728 M 2448 2008-067C 33468 1 -4 2 25-Dec-08 OK 115 729 M 2449 2008-067B 33467 1 6 8 25-Dec-08 OK 116 730 M 2456 2009-070A 36111 1 1 1 14-Dec-09 OK 117 733 M 2457 2009-070B 36112 1 -4 6 14-Dec-09 OK 118 734 M 2458 2009-070C 36113 1 1 5 14-Dec-09 OK 119 731 M 2459 2010-007A 36400 3 -3 22 1-Mar-10 OK 120 732 M 2460 2010-007C 36402 3 3 23 1-Mar-10 OK 121 735 M 2461 2010-007B 36401 3 2 24 1-Mar-10 OK 122 736 M 2464 2010-041C 37139 2 -2 9 2-Sep-10 OK 123 737 M 2465 2010-041B 37138 2 -1 12 2-Sep-10 OK 124 738 M 2466 2010-041A 37137 2 -1 16 2-Sep-10 OK 125 701K K1 2471 2011-009A 37372 3 -5 3 26-Feb-11 CHK 126 742 M 2474 2011-055A 37829 1 6 4 2-Oct-11 OK 127 743 M 2475 1 -4 2 4-Nov-11 CHK 128 744 M 2476 1 5 3 4-Nov-11 CHK 129 745 M 2477 1 5 7 4-Nov-11 CHK Notes ----- 1. NORAD Catalog Number is also known as U.S. Space Command (USSPACECOM) object number and NASA catalog number. 2. The numbers listed in the "Kosmos Numbers" column are the designators assigned by the Russian Federation. Formerly, NORAD had sometimes assigned different designators due to confusion in first tracking tripple-launched satellites. NORAD switched the designators of GLONASS satellites to the Russian ones back to Kosmos 2206 and perhaps to even earlier launched satellites. In 2006, the GLONASS Control Center switched the Kosmos numbers of GLONASS 796 and 712 to 2411 and 2413 respectively in its GLONASS status reports. It was not known if this was a real change or just a typographical error. However, they have persisted with these changes and so the table above has been amended to reflect the changes. 3. In the "M?" column, modernized GLONASS satellites are indicated with "M." "M*" indicates a development or prototype GLONASS-M satellite. K1 satellites transmit the legacy L1 and L2 signals as well as a new L3 signal. 4. Channel number, k, indicates L1 and L2 carrier frequencies: L1 = 1602. + 0.5625 k (MHz) k L2 = 1246. + 0.4375 k (MHz) k 5. Status codes: Main = satellite in maintenance mode. Res = satellite not in service but held in reserve. OK = satellite fully operational. UNH = satellite currently flagged unhealthy. UNH-DE = satellite flagged unhealthy and being decommissioned. CHK = satellite undergoing checkout and commissioning. The date listed is the date the satellite was removed from service (Moscow Time) as reported by the Information - Analytical Centre, Moscow. 6. All GLONASS satellites employ cesium atomic clocks. 7. The first GLONASS satellite was launched on 12-Oct-82. GLONASS 1 through 94 are no longer in service. 8. GLONASS 40 and 41 were launched with the Etalon 1 laser ranging satellite. GLONASS 42 and 43 were launched with Etalon 2. 9. The GLONASS numbering scheme used in this table includes the 8 "dummy" satellites orbited as ballast along with "real" satellites on the first 7 GLONASS launches. The second number in the "GLONASS Numbers" column is that assigned by the Russian Space Forces. 10. New GLONASS channel allocations were introduced in September 1993 aimed at reducing interference to radio astronomy. Note the use of the same channel on pairs of antipodal satellites. 11. Two GLONASS launches took place since the previous update to this table. A single-satellite launch of GLONASS-M 742 from Plesetsk took place on 2-Oct-11 at 20:15:14.081 UTC (ref. NAGU 042-111003). The satellite was set healthy on 25-Oct-11 at 06:30 UTC (ref. NAGU 050-111025). A triple- satellite launch from Baikonur (Block 44) occurred on 4-Nov-11 at 12:51:41 UTC (ref. NAGU 054-111107). The three GLONASS-M satellites, 743/Kosmos 2475, 744/Kosmos 2476, and 745/Kosmos 2477, are destined for orbital slots 2, 3, and 7 respectively (ref. NAGU 54-111107). 12. GLONASS 715's assigned almanac slot was changed from 3 back to 14, its physical orbital slot, and its frequency channel was switched from -6 to -7 on 12-Oct-11 at 21:02 UTC (ref. NAGU 045-111013). 13. GLONASS 718 was set unhealthy on 28 November at 21:00 UTC (ref. NAGU 069-101129). It was officially considered a reserve satellite although its orbit was slowly drifting. The satellite was withdrawn from service on 20-Oct-11 (ref. NAGU 048-111021). 14. GLONASS 722 was removed from the broadcast almanac and stopped transmitting on its assigned frequency channel on 12-Oct-11 (ref. NAGU 044-111013). It is officially considered a spare satellite. 15. GLONASS 701K stopped transmitting on 10-Oct-11 and its assigned almanac slot was subsequently changed from 4 to 3 on 12-Oct-11. It began transmitting again on its assigned frequency channel (-5) on 31-Oct-11. It occupies slot 21 in orbit plane 3. It continues to be set unhealthy in the broadcast almanac as it undergoes flight tests although it is sometimes set healthy in its ephemeris. 16. Some GLONASS satellites are temporarily unusable at times due to power problems while the satellites are in their eclipse seasons. 17. Number of GLONASS satellites currently in service: 23. 18. Number of GLONASS satellites currently usable: 23. 19. Constellation plot: Green: healthy satellite Red: unhealthy/unusable satellite Orange: reserve satellite. Satellites A, B, and C are those of the Block 44 launch. Specific identities not yet known. 20. Next GLONASS launch is scheduled for 28 November 2011. 21. Status of satellites compiled by Richard B. Langley, Dept. of Geodesy and Geomatics Engineering, University of New Brunswick.