Intelsat V F-1
{{Use American English|date=April 2017}}
{{Use dmy dates|date=June 2020}}
{{Infobox spaceflight
| name = Intelsat V F-1 → Intelsat 501
| image =
| image_caption =
| mission_type = Communications
| operator = COMSAT / INTELSAT
| website =
| COSPAR_ID = 1981-050A
| SATCAT = 12474
| mission_duration = 7 years (planned)
| spacecraft_bus = Intelsat V
| manufacturer = Ford Aerospace
| dry_mass = 1012 kg
| launch_mass = 1928 kg
| dimensions = 1.66 x 2.1 x 1.77 metres
| power = 1800 watts
| launch_date = 23 May 1981, 22:42:00 UTC {{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page |access-date=April 22, 2017}}
| launch_rocket = Atlas SLV-3D Centaur (AC-56)
| launch_contractor = General Dynamics
| disposal_type = Graveyard orbit
| deactivated = February 1997
| orbit_epoch = 23 May 1981
| orbit_reference = Geocentric orbit{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1981-050A|title=Display: Intelsat V F-1 1981-050A|publisher=NASA|date=14 May 2020 |access-date=29 June 2020}} {{PD-notice}}
| orbit_regime = Geostationary orbit
| orbit_longitude = 177.0° West (1981-1992)
91.5° East (1992-1996)
72.0° East (1996-1997)
| apsis = gee
| trans_band = 21 C-band
4 Ku-band
| trans_frequency =
| trans_bandwidth =
| trans_capacity =
| trans_coverage =
| trans_TWTA =
| trans_EIRP =
| trans_HPBW =
| programme = Intelsat V
| previous_mission = Intelsat V F-2
| next_mission = Intelsat V F-3
}}
Intelsat V F-1 (or Intelsat 501) was a geostationary communications satellite built by Ford Aerospace, it was owned by COMSAT. Launched in 1981, it was the second of fifteen Intelsat V satellites to be launched. The satellite was based on the Intelsat V platform and its estimated useful life was seven years.
Satellite
The satellite was box-shaped, measuring 1.66 by 2.1 by 1.77 metres; solar arrays spanned 15.9 metres tip to tip. The arrays, supplemented by nickel-hydrogen batteries during eclipse, provided 1800 watts of power. The payload housed 21 C-band and 4 Ku-band transponders. It could accommodate 15,000 two-way voice circuits and two TV channels simultaneously. It had a launch mass of 1928 kg.{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1989-006A|title=Display: Intelsat 5A F-15 1989-086A |publisher=NASA|date=14 May 2020|access-date=29 June 2020}} {{PD-notice}} The satellite was deactivated in February 1997.
Launch
The satellite was successfully launched into space on 23 May 1981, at 22:42:00 UTC, by means of an Atlas SLV-3D Centaur vehicle from the CCAFS, LC-36B.{{cite web|url=http://www.tbs-satellite.com/tse/online/sat_intelsat_515.html|title=INTELSAT 515|publisher=TSE|access-date=April 23, 2017}}
See also
{{Portal|Spaceflight}}
References
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{{Intelsat}}
{{Orbital launches in 1981}}
Category:Spacecraft launched in 1981
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