Indian Space Research OrganizationPSLV-DLSatish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India
XPoSat
Launched
January 1, 2024 · 03:40 UTC
Summary
XPoSat launched on an Indian Space Research Organization PSLV-DL from Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India on January 1, 2024 at 03:40 UTC. It was Indian Space Research Organization's 89th launch, 1st this year and humanity's 6,590th orbital launch attempt. It was the 4th PSLV-DL flight and the 1st this year. The payload was bound for low Earth orbit (LEO). XPoSAT, one of 2 catalogued objects, reached a 646 × 660 km orbit inclined 6.0°. 2 objects from this launch are catalogued, all of them payloads.
- Watch
- Booster
- No booster details on record.
- Mission
- Astrophysics · Low Earth Orbit (LEO)for ISRO
- Milestone
- 4th PSLV-DL flight · 1st this yearIndian Space Research Organization's 89th launch1st this yearhumanity's 6,590th orbital launch attempt1st orbital launch attempt this year
Webcast
Flight preview
Orbit: as tracked
XPoSAT · NORAD 58694 · 2024-001 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2024-001A
- Epoch
- 2024-01-01 12:58:12 UTC
- Mean motion
- 14.74832572 rev/day
- Eccentricity
- 0.0010384
- Inclination
- 5.9849°
- Ascending node
- 116.478°
- Arg. of perigee
- 355.8478°
- Mean anomaly
- 11.4429°
- Element set
- 999
- Rev at epoch
- 4
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
2 catalogued: 2 payloads; 1 still in orbit
- XPoSAT · NORAD 58694 · in orbit
- POEM-3 · NORAD 58695 · re-entered March 21, 2024
Data from J. McDowell, planet4589.org
About this launch
XPoSat (X-ray Polarimeter Satellite) is India’s first dedicated polarimetry mission to study various dynamics of bright astronomical X-ray sources in extreme conditions. The spacecraft will carry two scientific payloads in a low earth orbit. The primary payload POLIX (Polarimeter Instrument in X-rays) will measure the polarimetry parameters (degree and angle of polarization) in medium X-ray energy range of 8-30 keV photons of astronomical origin. The XSPECT (X-ray Spectroscopy and Timing) payload will give spectroscopic information in the energy range of 0.8-15 keV. In addition, 10 attached payloads on the PSLV 4th stage will perform various experiments and testing from Indian institutions coordinated by ISRO, known as PSLV Orbital Experimental Module-3 (POEM-3).
Pad

Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India
58th launch from Satish Dhawan Space Centre First Launch Pad, 1st this year · 93rd from Satish Dhawan Space Centre, India
Local pad time at liftoff: Jan 1, 9:10 AM GMT+5:30, in daylight
64 launches from this pad · 105 from Satish Dhawan Space Centre, India
71 days after the previous launch from this pad
All launches from Satish Dhawan Space Centre, IndiaOpen in maps
Updates
Launch success and satellite in operation.
Show 9 earlier updates
Liftoff.
Cosmic_Penguin · 1/1/2024 · source
Livestream has started
LL2 · 1/1/2024 · source
GO for launch.
Cosmic_Penguin · 12/30/2023 · source
Updated NET to 03:40 UTC 2024-01-01
hitura-nobad · 12/26/2023 · source
NET New Year's Day, 2024 per new NOTAMs.
Cosmic_Penguin · 12/20/2023 · source
NET December 28, 2023.
Cosmic_Penguin · 11/25/2023 · source
NET late December 2023.
Cosmic_Penguin · 11/9/2023 · source
Updating LV
Nosu · 4/22/2023 · source
Q2 2023
Nosu · 10/14/2022 · source
Questions
When did XPoSat launch?
XPoSat launched on January 1, 2024 at 03:40 UTC.
Where can I watch XPoSat?
Coverage: Launch of PSLV-C58/XPoSat Mission from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. Watch the replay
What rocket launched XPoSat?
PSLV-DL, flown by Indian Space Research Organization. PSLV-DL spec sheet
Where did XPoSat launch from?
Satish Dhawan Space Centre First Launch Pad, Satish Dhawan Space Centre, India. Liftoff was Jan 1, 9:10 AM GMT+5:30 local time at the pad.
What orbit did XPoSat reach?
XPoSAT, one of 2 catalogued objects, reached a 646 × 660 km orbit inclined 6.0°.
How many satellites did XPoSat launch?
2 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).
![[AUTO] PSLV-DL | XPoSat - image](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fpslv-dl252025_image_20240101105209.jpeg&w=1600)