INSAT-1C

INSAT-1C
Mission type	Communication
Operator	INSAT
COSPAR ID	1988-063A
SATCAT no.	19330
Mission duration	7 years (planned); 13 years (achieved)
Spacecraft properties
Bus	I-1K
Manufacturer	Ford Aerospace
Launch mass	1,190 kilograms (2,620 lb)
Start of mission
Launch date	21 July 1988
Rocket	Ariane 3
Launch site	Kourou ELA-2
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	93.5° East
Period	24 hours
	INSAT ← INSAT-1B INSAT-1D →

Last updated December 06, 2025

INSAT-1C was the third in the first generation INSAT series of satellites (termed as INSAT-1) built by Ford Aerospace to satisfy the domestic communication requirement of India. The Govt. agencies using its services were All India Radio, Doordarshan, Department of Space and Indian Meteorological Department ^[1]

Launch

INSAT-1C was launched from Guiana Space Centre in Kourou using Ariane 3 rocket on July 21, 1988. At launch, it had a mass of 1,190 kilograms (2,620 lb), and an expected operational lifespan of seven years. The satellite was positioned at 93.5° East longitude in geostationary orbit

Payloads

INSAT-1C carried 3 payloads on board to provide communication services to Indian Meteorological Department, Department of Telecommunications and Department of Space:

Very High Resolution scanning Radiometer (VHRR)
12 transponders operating in 2-phases (earth-to-satellite and vice versa).
Data channel to send data for land based applications.^[2]

Mission

INSAT-1C mission was a success and lasted for about 13 years because the satellite got another 6 C-band transponders and 2 S-band transponders when a power system made one more bus^[3]^[4]

References

↑ "INSAT 1C". NASA. Retrieved 2013-04-10.
↑ "INSAT-1C". Vikram Sarabhai Space Centre. Archived from the original on 2013-07-05. Retrieved 2013-04-10.
↑ "Geo Stationary Satellites : INSAT-1C". Indian Space Research Organisation. Archived from the original on 2013-08-18. Retrieved 2013-04-10.
↑ "INSAT 1". Federation of American Scientists. Retrieved 2013-04-10.

External links

isro.org : INSAT-1C

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[1] "INSAT 1C". NASA. Retrieved 2013-04-10.

[2] "INSAT-1C". Vikram Sarabhai Space Centre. Archived from the original on 2013-07-05. Retrieved 2013-04-10.

[3] "Geo Stationary Satellites : INSAT-1C". Indian Space Research Organisation. Archived from the original on 2013-08-18. Retrieved 2013-04-10.

[4] "INSAT 1". Federation of American Scientists. Retrieved 2013-04-10.

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v t e INSAT satellites
INSAT-1 series	INSAT-1A INSAT-1B INSAT-1C INSAT-1D
INSAT-2 series	INSAT-2A INSAT-2B INSAT-2C INSAT-2D INSAT-2DT INSAT-2E
INSAT-3 series	INSAT-3A INSAT-3B INSAT-3C INSAT-3D INSAT-3DR INSAT-3DS INSAT-3E
INSAT-4 series	INSAT-4A INSAT-4B INSAT-4C INSAT-4CR GSAT-6 / INSAT-4E GSAT-7 / INSAT-4F GSAT-8 / INSAT-4G

v t e ← 1987 Orbital launches in 1988 1989 →
January	Kosmos 1908 Kosmos 1909, Kosmos 1910, Kosmos 1911, Kosmos 1912, Kosmos 1913, Kosmos 1914 Gorizont No.25L Progress 34 Kosmos 1915 Meteor-2 No.20
February	USA-29 Kosmos 1916 USA-30 Kosmos 1919, Kosmos 1917, Kosmos 1918 Kosmos 1920 Kosmos 1921 Sakura 3a Kosmos 1922
March	Zhongxing-1 Kosmos 1923 Kosmos 1924, Kosmos 1925, Kosmos 1926, Kosmos 1927, Kosmos 1928, Kosmos 1929, Kosmos 1930, Kosmos 1931 Molniya-1 No.65 Spacenet 3R, Telecom 1C Kosmos 1932 Kosmos 1933 IRS-1A Molniya-1 No.64 Kosmos 1934 Progress 35 Kosmos 1935 San Marco 5 Kosmos 1936 Gorizont No.26L
April	Kosmos 1937 Kosmos 1938 Foton No.4L Kosmos 1939 Transit-O 23, Transit-O 32 Kosmos 1940 Kosmos 1941
May	Ekran No.31L Kosmos 1942 Progress 36 Kosmos 1943 Intelsat VA F-13 Kosmos 1944 Kosmos 1945 Kosmos 1946, Kosmos 1947, Kosmos 1948 Molniya-3 No.49 Kosmos 1949 Kosmos 1950 Kosmos 1951
June	Soyuz TM-5 Kosmos 1952 Kosmos 1953 Meteosat 3, PAS-1, OSCAR-13 Nova 2 Kosmos 1954 Kosmos 1955 Kosmos 1956
July	Okean-O1 No.5 Kosmos 1957 Fobos 1 Unnamed Fobos 2 SROSS-B Kosmos 1958 Progress 37 Kosmos 1959 INSAT-1C, ECS-5 Meteor-3 No.3 Resurs-F1 No.30 Kosmos 1960
August	Kosmos 1961 Fanhui Shi Weixing I-02 Kosmos 1962 Molniya-1 No.66 Kosmos 1963 Gorizont No.28L Kosmos 1964 Kosmos 1965 Transit-O 25, Transit-O 31 Soyuz TM-6 Kosmos 1966
September	USA-31 USA-32 Kosmos 1967 Fengyun I-01 GStar-3, SBS-5 Kosmos 1968 Progress 38 Kosmos 1969 Kosmos 1970, Kosmos 1971, Kosmos 1972 Sakura 3b Ofek-1 Kosmos 1973 NOAA-11 Molniya-3 No.51 STS-26 (TDRS-3)
October	Kosmos 1974 Kosmos 1975 Kosmos 1976 Gran' No.34L Kosmos 1977 Kosmos 1978 TDF 1
November	USA-33 Unnamed Buran 1K1 (37KB No.3770) Kosmos 1979 Kosmos 1980 Kosmos 1981 Soyuz TM-7 Kosmos 1982
December	STS-27 (USA-34) Kosmos 1983 Ekran-M No.12L Skynet 4B, Astra 1A Kosmos 1984 Zhongxing-2 Molniya-3 No.52 Kosmos 1985 Progress 39 Molniya-1 No.63 Kosmos 1986
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).