Microsat (ISRO) explained

Microsat-TD
Operator:	ISRO
Cospar Id:	2018-004T
Satcat:	43128
Mission Duration:	Planned: 10 months Duration:
Spacecraft Bus:	IMS-1
Manufacturer:	ISRO
Launch Date:	12 January 2018
Launch Rocket:	PSLV-C40
Launch Site:	Satish Dhawan Space Centre (Sriharikota)
Disposal Type:	Orbital decay
Decay Date:	27 November 2020^[1]
Orbit Reference:	Geocentric
Orbit Regime:	Sun-synchronous orbit
Orbit Periapsis:	350km (220miles)
Orbit Apoapsis:	350km (220miles)
Orbit Inclination:	96.87°
Orbit Period:	91.5 minutes

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]}

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

Notes and References

1. Web site: Kumar . Anil . India's Efforts in Space Debris Management . 19 February 2022.
2. News: Official page of MICROSAT . ISRO . January 12, 2018 . January 24, 2018 . January 25, 2018 . https://web.archive.org/web/20180125015338/https://www.isro.gov.in/Spacecraft/microsat-0 . dead .
3. Web site: ISRO's maiden century . The Hindu. 12 January 2018 . January 24, 2018.
4. News: ISRO's night images . Times of India. 23 January 2018 . January 23, 2018.
5. Web site: Images from INS-1C and Microsat - ISRO. 2020-12-04. www.isro.gov.in.
6. Web site: PSLV Successfully Launches 31 Satellites in a Single Flight - ISRO. 2020-12-04. www.isro.gov.in. 2020-11-30. https://web.archive.org/web/20201130211525/https://www.isro.gov.in/update/12-jan-2018/pslv-successfully-launches-31-satellites-single-flight. dead.
7. News: 2017-06-23. ISRO upbeat over PSLV- C38 mission success. en-IN. The Hindu. 2020-12-04. 0971-751X.
8. Web site: rajasekhar. pathri. 2017-06-20. Isro to lower rocket's altitude. 2020-12-04. Deccan Chronicle. en.
9. Web site: PSLV-C40 Brochure . ISRO . January 24, 2018 . January 25, 2018 . https://web.archive.org/web/20180125015722/https://www.isro.gov.in/sites/default/files/flipping_book/PSLV-C40_Cartosat2SeriesMission/index.html#3 . dead .
10. Web site: Longest PSLV mission . INBA . January 24, 2018 . https://web.archive.org/web/20180124074533/http://inba.tv/indias-100th-satellite-laucnched-isro/ . January 24, 2018 . dead .
11. Web site: Annadurai. Mylswami. January 2015. User Interaction Meet NRSC 2015. live. https://web.archive.org/web/20150327055110/http://nrsc.gov.in/pdf/1.1.User%20Meet_NRSC_2015-01-21_Ver-2_Anna_durai.pdf. 27 March 2015.
12. Web site: Microsat. dead. https://web.archive.org/web/20180227193635/http://www.isac.gov.in/earth-observation/html/microsat.jsp. 27 February 2018.