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Indian Space Research OrganizationPSLV XLSatish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India
EOS-4 (RISAT-1A)
Launched
February 14, 2022
Summary
EOS-4 (RISAT-1A) launched on an Indian Space Research Organization PSLV XL from Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India on February 14, 2022. It was Indian Space Research Organization's 76th launch, 1st this year and humanity's 6,196th orbital launch attempt. It was the 23rd PSLV XL flight and the 1st this year. The payload was bound for Sun-Synchronous Orbit (SSO). EOS-04, one of 4 catalogued objects, reached a 524 × 542 km orbit inclined 97.5°. 4 objects from this launch are catalogued, 3 of them payloads.
- Watch
- Launch of PSLV-C52/EOS-04ISRO Official
- Launch of PSLV- C52/EOS-04from Satish Dhawan Space Centre (SHAR), SriharikotaDoordarshan National
- Booster
- No booster details on record.
- Mission
- Earth Science · Sun-Synchronous Orbit (SSO)
- Milestone
- 23rd PSLV XL flight · 1st this yearIndian Space Research Organization's 76th launch1st this yearhumanity's 6,196th orbital launch attempt14th orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
EOS-04 · NORAD 51656 · 2022-013 · Space-Track · tracking 1 of 4 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2022-013A
- Epoch
- 2022-02-14 01:49:58 UTC
- Mean motion
- 15.13450917 rev/day
- Eccentricity
- 0.0013315
- Inclination
- 97.5332°
- Ascending node
- 54.1722°
- Arg. of perigee
- 244.5612°
- Mean anomaly
- 205.9462°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: SSO. Ascent drawn from padside's representative profile.
Catalogued objects
4 catalogued: 3 payloads, 1 rocket stage; 2 still in orbit
- EOS-04 · NORAD 51656 · in orbit
- InspireSat-1 · NORAD 51657 · re-entered May 2, 2026
- INS-2TD · NORAD 51658 · re-entered November 13, 2024
PSLV-C52 PS4 · in orbit
Data from J. McDowell, planet4589.org
About this launch
EOS-4 (also known by the old designation RISAT 1A) is a radar remote sensing satellite.
Pad
Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India
51st launch from Satish Dhawan Space Centre First Launch Pad, 1st this year · 80th from Satish Dhawan Space Centre, India
64 launches from this pad · 105 from Satish Dhawan Space Centre, India
350 days after the previous launch from this pad
All launches from Satish Dhawan Space Centre, IndiaOpen in maps
Updates
Launch success has been declared during the webcast
Show 5 earlier updates
Liftoff
SwGustav · 2/14/2022
Launch date and time confirmed by ISRO.
Cosmic_Penguin · 2/8/2022 · source
Targeting February 14
Nosu · 1/28/2022 · source
Updating launch date per NOTAM (FIMM A0175/21)
spacevogel · 12/16/2021
Moving to end of year due to reports of all ISRO launches slipping into 2022, TBD.
Cosmic_Penguin · 10/16/2021 · source
Questions
When did EOS-4 (RISAT-1A) launch?
EOS-4 (RISAT-1A) launched on February 14, 2022. The time is known to the hour, not the minute.
Where can I watch EOS-4 (RISAT-1A)?
Coverage: Launch of PSLV-C52/EOS-04; Launch of PSLV- C52/EOS-04from Satish Dhawan Space Centre (SHAR), Sriharikota. Watch the replay
What rocket launched EOS-4 (RISAT-1A)?
PSLV XL, flown by Indian Space Research Organization. PSLV XL spec sheet
Where did EOS-4 (RISAT-1A) launch from?
Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India.
What orbit did EOS-4 (RISAT-1A) reach?
EOS-04, one of 4 catalogued objects, reached a 524 × 542 km orbit inclined 97.5°.
How many satellites did EOS-4 (RISAT-1A) launch?
3 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).