NOAA-4
Illustration of an ITOS series satellite
Mission typeWeather
OperatorNOAA / NASA
COSPAR ID1974-089A[1]
SATCAT no.7529
Mission duration4 years
Spacecraft properties
Launch mass339.7 kilograms (749 lb)
Start of mission
Launch dateNovember 15, 1974, 17:11:00 (1974-11-15UTC17:11Z) UTC[2]
RocketDelta 2310 D104
Launch siteVandenberg SLC-2W
End of mission
DisposalDecommissioned
DeactivatedNovember 18, 1978 (1978-11-19)
Orbital parameters
Reference systemGeocentric
RegimeSun-synchronous
Perigee altitude1,451 kilometers (902 mi)
Apogee altitude1,465 kilometers (910 mi)
Inclination101.46 degrees
Period114.91 minutes
EpochDecember 8, 2013, 12:44:30 UTC[3]
Instruments
VHRR, VTPR, SR
ITOS
 

NOAA-4, also known as ITOS-G was a weather satellite operated by the National Oceanic and Atmospheric Administration (NOAA). It was part of a series of satellites called ITOS, or improved TIROS.[4] NOAA-4 was launched on a Delta rocket on November 15, 1974. The launch carried two other satellites: AMSAT-OSCAR 7 and Intasat.[2] It remained operational for 1463 days until it was deactivated by NOAA on November 18, 1978.

References

  1. ↑ "NASA/NSSDC NOAA-4 spacecraft details". Retrieved October 20, 2008.
  2. 1 2 McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved December 8, 2013.
  3. ↑ "NOAA 4 Satellite details 1974-089A NORAD 7529". N2YO. December 8, 2013. Retrieved December 8, 2013.
  4. ↑ Wade, Mark. "ITOS". Encyclopedia Astronautica. Archived from the original on September 13, 2008. Retrieved October 20, 2008.
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