Animation of Galaxy 15's trajectory from 13 October 2005 to 25 October 2005 Galaxy 15· Earth
Mission type
Communication Navigation
Operator
PanAmSat (2005–2006) Intelsat (2006-)
COSPAR ID
2005-041A
SATCAT no.
28884
Mission duration
15 years (planned)
Spacecraft properties
Bus
GEOStar-2
Manufacturer
Orbital Sciences
Launch mass
2,033 kilograms (4,482 lb)
Start of mission
Launch date
October 13, 2005, 22:32 (2005-10-13UTC22:32Z) UTC
Rocket
Ariane 5GS
Launch site
Kourou ELA-3
Contractor
Arianespace
Orbital parameters
Reference system
Geocentric
Regime
Geostationary
Longitude
133° West
Perigee altitude
35,764 kilometres (22,223 mi)
Apogee altitude
35,779 kilometres (22,232 mi)
Inclination
0.062 degrees
Period
23 hours 56 minutes
Transponders
Band
24 G/H band (IEEE C band) 2 C/D band (IEEE L band)
Galaxy 15 is an American telecommunications satellite which is owned by Intelsat. It was launched for and originally operated by PanAmSat, and was subsequently transferred to Intelsat when the two companies merged in 2006. It was originally positioned in geostationary orbit at a longitude of 133° West, from where it was used to provide communication services to North America.
In April 2010, Intelsat lost control of the satellite, and it began to drift away from its orbital slot, with the potential to cause disruption to other satellites in its path. On 27 December 2010, Intelsat reported that the satellite had rebooted as per design and the command unit was responding to commands again. In addition, the satellite had been secured in safe mode and the potential for interference issues from Galaxy 15 had ceased.[1][2] Intelsat repositioned Galaxy 15 back to its original location on April 4, 2011.[3][needs update]
On 10 August 2022, Intelsat again lost control of Galaxy 15 attributing this to a space weather event.[4]
^"Galaxy 15 | Intelsat". Archived from the original on 2010-10-08. Retrieved 2010-11-20.
^"FAQs | Galaxy 15 | Intelsat". Archived from the original on 2010-07-19. Retrieved 2010-07-25.
^"WAAS PRN 135 Resumes Normal Operation GPS GIS geospatial | GPS World". Archived from the original on 2011-07-27. Retrieved 2011-03-19.
^Rachel Jewett (2022-08-22). "Intelsat Loses Command of Galaxy 15 Satellite". Via Satellite.
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