ESSA-9

ESSA-9
ESSA-9 being checked out before launch
Mission typeMeteorology
OperatorESSA (1969-70)
NOAA (1970-72)
COSPAR ID1969-016A Edit this at Wikidata
SATCAT no.3764
Mission duration1,726 days (achieved)
55 years, 8 months and 30 days (in orbit)
Spacecraft properties
Launch mass145 kilograms (320 lb)
Start of mission
Launch dateFebruary 26, 1969, 07:47:01 (1969-02-26UTC07:47:01Z) UTC[1]
RocketDelta E1
Launch siteCape Canaveral LC-17B
End of mission
DisposalDecommissioned
DeactivatedNovember 1972 (1972-12)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Semi-major axis7,843.18 kilometers (4,873.53 mi)
Eccentricity0.00508
Perigee altitude1,432 kilometers (890 mi)
Apogee altitude1,512 kilometers (940 mi)
Inclination101.99 degrees
Period115.21 minutes
Mean motion12.49
EpochDecember 7, 2013, 20:28:49 UTC[2]
Instruments
Advanced Vidicon Camera System (AVCS), Flat Plate Radiometer (FPR)[3]

ESSA-9, also known as TOS-G, was a meteorological satellite.[4] Its name was derived from that of its oversight agency, the Environmental Science Services Administration (ESSA). ESSA-9 replaced the ESSA-7 satellite.

  1. ^ Launch info
  2. ^ "ESSA 9 (TOS-G) Satellite details 1969-016A NORAD 3764". N2YO. December 7, 2013. Retrieved December 8, 2013.
  3. ^ Experiments on ESSA-9
  4. ^ tbs-satellite.com Satellit Fact Sheet: ESSA-9