China Aerospace Science and Technology CorporationLong March 4BLaunch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China
Yaogan 12 & Tianxun-1
Launched
November 9, 2011
Image: CASC
Summary
Yaogan 12 & Tianxun-1 launched on a China Aerospace Science and Technology Corporation Long March 4B from Launch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China on November 9, 2011. It was China Aerospace Science and Technology Corporation's 96th launch, 14th this year and humanity's 5,175th orbital launch attempt. It was the 15th Long March 4B flight and the 2nd this year. The payload was bound for Sun-Synchronous Orbit (SSO). Tianxun-1, one of 7 catalogued objects, reached a 485 × 497 km orbit inclined 97.4°. 7 objects from this launch are catalogued, 2 of them payloads.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Earth Science · Sun-Synchronous Orbit (SSO)
- Milestone
- 15th Long March 4B flight · 2nd this yearChina Aerospace Science and Technology Corporation's 96th launch14th this yearhumanity's 5,175th orbital launch attempt69th orbital launch attempt this year
Flight preview
Orbit: as tracked
Tianxun-1 · NORAD 37874 · 2011-066 · Space-Track · tracking 1 of 7 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2011-066A
- Epoch
- 2011-11-09 04:24:30 UTC
- Mean motion
- 15.27308118 rev/day
- Eccentricity
- 0.0009132
- Inclination
- 97.4143°
- Ascending node
- 25.3177°
- Arg. of perigee
- 299.4084°
- Mean anomaly
- 60.5208°
- 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
7 catalogued: 2 payloads, 1 rocket stage, 4 components; 1 still in orbit
- Tianxun-1 · NORAD 37874 · re-entered February 7, 2016
- Yaogan Weixing 12 · NORAD 37875 · in orbit
CZ-4B Y21 Stage 3 · re-entered December 18, 2011
Data from J. McDowell, planet4589.org
About this launch
Yaogan 12 is a Chinese Earth observation satellite, likely also used for military reconnaissance. Tianxun-1 is a Chinese microsatellite built by the Nanjing University of Aeronautics and Astronautics. Earth observation with maximum resolution of 30 metres.
Pad

Launch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China
5th launch from Launch Complex 9, 1st this year · 37th from Taiyuan Satellite Launch Center, People's Republic of China
80 launches from this pad · 162 from Taiyuan Satellite Launch Center, People's Republic of China
456 days after the previous launch from this pad
All launches from Taiyuan Satellite Launch Center, People's Republic of ChinaOpen in maps
Questions
When did Yaogan 12 & Tianxun-1 launch?
Yaogan 12 & Tianxun-1 launched on November 9, 2011. The time is known to the hour, not the minute.
Where can I watch Yaogan 12 & Tianxun-1?
No webcast is on record for this launch.
What rocket launched Yaogan 12 & Tianxun-1?
Long March 4B, flown by China Aerospace Science and Technology Corporation. Long March 4B spec sheet
Where did Yaogan 12 & Tianxun-1 launch from?
Launch Complex 9, Taiyuan Satellite Launch Center, People's Republic of China.
What orbit did Yaogan 12 & Tianxun-1 reach?
Tianxun-1, one of 7 catalogued objects, reached a 485 × 497 km orbit inclined 97.4°.
How many satellites did Yaogan 12 & Tianxun-1 launch?
2 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).
