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HomeNewsSpace / GPS GLONASS-M constellation now consists of 10 satellites The American Surveyor
GLONASS-M constellation now consists of 10 satellites
Written by IGS
Thursday, 29 November 2007
Dear IGS/IGLOS colleagues,
We got confronted with first IGS/IGLOS tracking data of the three new GLONASS-M satellites launched on 26 Oct 2007, namely:
R19 (720) on 08 Nov 2007 (day 312)
R20 (719) on 19 Nov 2007 (day 323)
R17 (718) on 28 Nov 2007 (day 332)
With these three new satellites, the GLONASS-M constellation now consists of 10 satellites: R06, R07, R10, R14, R15, R17, R19, R20, R23, R24.
The CODE GNSS orbit products include currently up to 45 satellites (31 GPS plus 14 GLONASS). The following GLONASS satellites may be declared as active (not all of them are marked usable):
R01 (796)
R04 (795)
R06 (701)
R07 (712)
R08 (797)
R10 (717)
R14 (715)
R15 (716)
R17 (718)
R19 (720)
R20 (719)
R21 (792)
R23 (714)
R24 (713)
Inactive are:
R02 (794)
R03 (789)
R05 (711)
R22 (791)
Note that the GLONASS status page (dated Nov 29, 2007) does not yet list R17, the first GLONASS satellite transmitting on a negative frequency channel (-1).
It is rather strange that the amount of IGS/IGLOS tracking data is currently considerably reduced for 7 (of 14) GLONASS satellites: R07, R08, R10, R14, R15, R17, R21.
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