INSAT 4CR satellite problems

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Here is one of the best-kept secrets of the Indian Space Research Organization (ISRO): Insat-4CR, launched by a geosynchronous satellite launch vehicle (GSLV-F04) on September 2, 2007, “disappeared” in space about a month later.
The satellite, which has 12 transponders meant for defence applications, direct-to-home (DTH) services and news gathering for television channels, was, however, “spotted” again with the help of the US-based National Aeronautics & Space Administration (Nasa) and brought back to a near geosynchronous orbit (36,000 km above earth). This took 15 days of manoeuvres, which consumed fuel normally meant for five years. This means the life of the satellite has come down from 10 years to five years.
A satellite’s life is determined by its fuel supply. As it keeps drifting in space, it has to be propelled back to the desired orbit using precious fuel.
A highly-placed source told DNA that Insat-4CR “disappeared” some time in October, almost a month after its orbit was raised for the fifth time to a near-geosynchronous orbit from the master control facility (MCF) at Hassan in Karnataka on September 7. The GSLV-F04 launch carrying Insat-4CR was critical for ISRO after it lost Insat-4C #one minute after launch on July 10, 2006. Insat-4CR had a perfect launch, but the unusual drift in space was totally unexpected. Insat-4CR, weighing 2,130 kg, is identical to Insat-4C.
When its tracking systems failed to locate the satellite, ISRO sought help from Nasa. The Nasa Orbital Debris Program Office located it a few days later. “Reclaiming the satellite was no mean achievement,” said the source, “but in the process, the satellite lost fuel meant for five years.”
Of the 12 transponders the satellite has, six are for Bharti’s DTH platform which is planned for launch in January 2008. Two others are for defence, one each for the Indian Railways and ONGC and the remaining two for different television channels.
ISRO’s satellite communication programme director Bhaskar Narayan, however, denied any glitches to Insat-4CR. When contacted, a Bharti spokesperson refused to confirm or deny information about the satellite.
“All we can say is that our service levels and delivery schedules are unaffected,” the spokesperson said.

That means again a long wait for BHARTI DTH, like in case of Tata Sky who had to wait for launch of INSAT 4A and then for it becoming operational
 
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^^^When you say, best kept secret, are you referring to the fact that the news came out late? Because i remember reading about this in the Newspapers, a week or two ago. Arun
 

amish

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if this is true then bharti wud not go for it. because it wud take them 5yrs to settle and by that time, they wud again be reqd to hunt for new satellite.

ISRO denies any such thing
ISRO Refutes INSAT-4CR Disappearance Story

ISRO refutes INSAT-4CR disappearance story - Sify.com

ISRO refutes INSAT-4CR `disappearance' story- Hindustan Times

I am relaxed now, it wud have been loss of crores of rupees to country

Technical clarification that it has not happened and reports are false.
Dude, Where's My Satellite? | Really Rocket Science
The report is a bit strange anyway. For instance, it claims that the satellite had disappeared and was a few days later found by NASA's Orbital Debris Program Office. While this office does exist, its main job certainly isn't hunting \"lost\" satellites.

It is possible that a geostationary satellite starts to drift after an outage and has to be manoeuvred back -- most recently, this happened to the U.S. weather satellite GOES 12 -- but it seems unlikely that such a salvage operation would take up half the spacecraft's fuel.

Anyway, if this is what has happened NORAD tracking data would clearly show it -- either the data would indicate a significant drift or, if NORAD had \"lost\" the satellite, too, then there would be no data at all.

But there are data, and they show that the satellite stayed at its position of 74 degrees East since its arrival there -- without any sign of a major anomaly.
 

amish

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read the reports above. its convincing enough that it didnt happen.