China Aerospace Science and Technology CorporationLong March 2CLaunch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China
Einstein Probe
Launched
January 9, 2024 · 07:03 UTC

Summary
Einstein Probe launched on a China Aerospace Science and Technology Corporation Long March 2C from Launch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China on January 9, 2024 at 07:03 UTC. The launch window ran from 06:51 to 07:52 UTC. It was China Aerospace Science and Technology Corporation's 453rd launch, 1st this year and humanity's 6,596th orbital launch attempt. It was the 56th Long March 2C flight and the 1st this year. The payload was bound for low Earth orbit (LEO). Einstein Tanzhen, one of 2 catalogued objects, reached a 588 × 603 km orbit inclined 29.0°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- Einstein Probe launchSciNews
- Booster
- No booster details on record.
- Mission
- Astrophysics · Low Earth Orbit (LEO)
- Milestone
- 56th Long March 2C flight · 1st this yearChina Aerospace Science and Technology Corporation's 453rd launch1st this yearhumanity's 6,596th orbital launch attempt7th orbital launch attempt this year
Flight preview
Orbit: as tracked
Einstein Tanzhen · NORAD 58753 · 2024-007 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2024-007A
- Epoch
- 2024-01-09 17:51:40 UTC
- Mean motion
- 14.93022063 rev/day
- Eccentricity
- 0.0010999
- Inclination
- 28.9959°
- Ascending node
- 203.1853°
- Arg. of perigee
- 293.3146°
- Mean anomaly
- 62.569°
- Element set
- 999
- Rev at epoch
- 7
- 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: 1 payload, 1 rocket stage; 2 still in orbit
- Einstein Tanzhen · NORAD 58753 · in orbit
CZ-2C Y30 Stage 2 · in orbit
Data from J. McDowell, planet4589.org
About this launch
The Einstein Probe (EP) is a Chinese Wide-Field X-ray astronomy observatory for detecting high energy flashes of cataclysmic cosmic events. These includes tidal disruption events (stars pulled apart by supermassive black holes), supernovae, and high-energy, electromagnetic counterparts of gravitational wave events. The spacecraft, weighing ~1400 kilograms, will be launched into a 600-kilometer-high, low-inclination orbit. The probe's instruments include a Wide-field X-ray Telescope (WXT) with a field of view of 3,600 square degrees, employing cutting-edge "lobster eye" optics to view X-ray events more deeply and widely than previously possible, and a Follow-up X-ray Telescope (FXT), developed in collaboration with Europe, that performs follow-up detailed observations as soon as WXT detects an X-ray event. The Einstein Probe mission is managed by the NSSC, with participation from the CAS's NAOC, the Institute of High Energy Physics (IHEP), the Shanghai Institute of Technical Physics (SITP), and the Innovation Academy for Microsatellites, a spacecraft manufacturer that has previously produced space science and Beidou navigation spacecraft. The European Space Agency is contributing to the mission with a mirror module for the FXT instrument, as well as ground station and science management support. The FXT instrument is also supported by Germany's Max Planck Institute for Extraterrestrial Physics.
Pad

Launch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China
87th launch from Launch Complex 3 (LC-3/LA-1), 1st this year · 199th from Xichang Satellite Launch Center, People's Republic of China
Local pad time at liftoff: Jan 9, 3:03 PM GMT+8, in daylight
108 launches from this pad · 242 from Xichang Satellite Launch Center, People's Republic of China
30 days after the previous launch from this pad
All launches from Xichang Satellite Launch Center, People's Republic of ChinaOpen in maps
Updates
Questions
When did Einstein Probe launch?
Einstein Probe launched on January 9, 2024 at 07:03 UTC. The launch window ran from 06:51 to 07:52 UTC.
Where can I watch Einstein Probe?
Coverage: Einstein Probe launch. Watch the replay
What rocket launched Einstein Probe?
Long March 2C, flown by China Aerospace Science and Technology Corporation. Long March 2C spec sheet
Where did Einstein Probe launch from?
Launch Complex 3 (LC-3/LA-1), Xichang Satellite Launch Center, People's Republic of China. Liftoff was Jan 9, 3:03 PM GMT+8 local time at the pad.
What orbit did Einstein Probe reach?
Einstein Tanzhen, one of 2 catalogued objects, reached a 588 × 603 km orbit inclined 29.0°.
How many satellites did Einstein Probe launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).
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