Microsat (ISRO)

Not to be confused with Microsat-R.

Microsat-TD was an Earth observing satellite developed by ISRO.^[2] Its launch marked India's 100 satellites in space.^[3] This satellite could capture images at night by imaging in infrared spectrum.^[4][5]

Microsat-TD

Operator	ISRO
COSPAR ID	2018-004T
SATCAT no.	43128
Mission duration	Planned: 10 months Duration: 2 years, 10 months, 15 days
Spacecraft properties
Bus	IMS-1
Manufacturer	ISRO
Launch mass	133.2 kilograms (294 lb)
Start of mission
Launch date	12 January 2018
Rocket	PSLV-C40
Launch site	Satish Dhawan Space Centre (Sriharikota)
End of mission
Disposal	Orbital decay
Decay date	27 November 2020[1]
Orbital parameters
Reference system	Geocentric
Regime	Sun-synchronous orbit
Periapsis altitude	350 km (220 mi)
Apoapsis altitude	350 km (220 mi)
Inclination	96.87°
Period	91.5 minutes

Launch

MICROSAT-TD satellite was launched at 0359 UTC on 12 January 2018^[6] by PSLV-C40 and its deployment profile was previously rehearsed on PSLV-C38 mission.^[7][8] Microsat-TD was launched along with Cartosat-2F, INS-1C and 28 satellites from 6 countries^[9] and separated 1 hour 45 minutes after first stage ignition.^[10] Duration of PSLV C40 mission was 2 hours and 21 minutes, making it the longest mission of PSLV at that time.

Payload

Microsat-TD was IMS-1 based technology demonstrator carrying optical imaging payload in two bands.^[11][12]

• 0.8 meter resolution (panchromatic, 0.5 -0.85 μm) with 3.2 km swath
• 6 meter resolution (IR, 3.7-4.8 μm and 8-12 μm) with 2 km swath

End of mission

To reduce its orbital stay, Microsat-TD was de-orbited while depleting its left over propellant near the end of its life. Satellite reentered within a month, on 27 November 2020.^[1]

See also

• Microsat-R