[IGSMAIL-5667]: Three new GLONASS-M satellites active

[Stefan Schaer]

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IGS Electronic Mail      29 Nov 12:11:31 PST 2007      Message Number 5667
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Author: Stefan Schaer


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).

http://www.glonass-ianc.rsa.ru/pls/htmldb/glonass.collectors_content.get_cys_en_as_txt

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.

Best regards,

The CODE AC Team