[IGSMAIL-6276] Three new GLONASS-M satellites active

[Schaer Stefan LT]

Author: Stefan Schaer


Dear IGS colleagues,

We got confronted with first IGS tracking data of the three new
GLONASS-M satellites launched on 02 Sep 2010, namely:

  R16 (736) on 27 Sep 2010 (day 270)
  R09 (736) on 01 Oct 2010 (day 274)
  R12 (737) on 04 Oct 2010 (day 277)
  R16 (738) on 04 Oct 2010 (day 277)

With these three new satellites, the GLONASS-M constellation now
consists of 24 satellites (plus 2 spares).

>From day 273 to day 274, an unprecedented number of GLONASS
constellation changes was made. Details may be found at:

http://www.glonass-ianc.rsa.ru/pls/htmldb/f?p=202:1:3950352196721399

The CODE GNSS orbit products include currently up to 53 satellites (32
GPS plus 21 GLONASS). G01 is marked unhealthy; R04 is inactive, R06 is
expected to be inactive for several weeks. Once more, it should be
emphasized that current data of R03 (722) is considered useless and is
therefore generally excluded from our analysis.

NOTE: The following IGS GNSS receiver is still unable to provide
R10/R14 tracking data:

bako:  LEICA GRX1200GGPRO  6.02/3.015

See also IGS Mail 6061:

http://igscb.jpl.nasa.gov/mail/igsmail/2010/msg00009.html

Best regards,

The CODE AC Team