GSAT-19 is an Indian communications satellite launched by the Indian Space Research Organisation aboard a GSLV Mark III on 5 June 2017.[1]
Satellite and payloads
The satellite will act as a testbed for the modular I-6K satellite bus, carrying experimental technologies such as ion thrusters for manoeuvring and stabilisation, active thermal control using thermal radiators, a miniaturised inertial reference unit, indigenously produced lithium-ion batteries, and C-band traveling-wave-tube amplifiers.[2][3][4]
Rather than traditional transponders, GSAT-19 carries four Ku/Ka-band forward link beams and four Ku/Ka-band return link beams, providing much higher data throughput than India's previous communications satellites.[5][6] It additionally carries a Geostationary Radiation Spectrometer (GRASP) payload, which will "monitor and study the nature of charged particles and the influence of space radiation on satellites and their electronic components".[7]
Orbit raising and station keeping
The satellite was launched aboard the GSLV Mk III-D1 rocket in the evening of 5 June 2017 to a geostationary transfer orbit perigee of Template:Convert. This was followed by a series of orbit raising operations (using an on-board LAM and chemical thrusters[8]) to place the satellite in the intended geostationary orbital slot.
| Op # | Date/ Time (UTC) |
LAM burn time | Height achieved | Inclination achieved |
Orbital period | References | |
|---|---|---|---|---|---|---|---|
| Apogee | Perigee | ||||||
| 1 | 6 June 2017 08:33 |
116 s | Template:Convert | Template:Convert | 21.56° | 10 h, 30 min | [9] |
| 2 | 7 June 2017 10:14 |
5538 s | Template:Convert | Template:Convert | 7.02° | 13 h, 58 min | [10] |
| 3 | 9 June 2017 04:25 |
3469 s | Template:Convert | Template:Convert | 0.793° | 21 h, 38 min | [11] |
| 4 | 10 June 2017 02:29 |
488 s | Template:Convert | Template:Convert | 0.101° | 23 h, 50 min, 10 s | [12] |
References
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedsfnow20170605 - ↑ Annual Report: 2014-2015. Indian Space Research Organisation(2015).
- ↑ First Prototype of ISRO's Semi-Cryogenic Engine To Be Ready By 2016(19 August 2015). Retrieved 26 October 2016.
- ↑ GSat 19. Gunter's Space Page. Retrieved 27 May 2016.
- ↑ Isro's GSAT-19, GSAT-11 satellites: Game changers in communications. The Times of India(5 June 2017). Retrieved 26 June 2017.
- ↑ GLSV Mark III rocket conducts ‘all-up’ launch with GSAT-19 satellite. NASASpaceFlight.com(5 June 2017). Retrieved 26 June 2017.
- ↑ ISRO’s Mk III Launched a Little-Known Instrument Called GRASP – This Is What It Does. The Wire(26 June 2017). Retrieved 26 June 2017.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedbrochure - ↑ The first orbit raising operation.... Indian Space Research Organisation(8 June 2017). Retrieved 12 June 2017.
- ↑ The second orbit raising operation.... Indian Space Research Organisation(8 June 2017). Retrieved 12 June 2017.
- ↑ The third orbit raising operation.... Indian Space Research Organisation(10 June 2017). Retrieved 12 June 2017.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedorbit-raise-4
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