Tianhui 1B


Tianhui I-02
Tianhui 1B.jpg
Tianhui I-02
Mission typeEarth observation
COSPAR ID2012-020A
SATCAT no.38256
Start of mission
Launch date6 May 2012, 07:10:05 (2012-05-06UTC07:10:05Z) UTC
RocketChang Zheng 2D
Launch siteJiuquan LA-4/SLS-2
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude492 kilometres (306 mi)[1][2]
Apogee altitude504 kilometres (313 mi)[1][2]
Inclination97.35 degrees[2]
Period94.57 minutes[3]
Epoch6 May 2012[3]

Tian Hui-1 (also known as Mapping Satellite I) is a Chinese earth observation satellite built by Dong Feng Hong, a China Aerospace Science and Technology Corporation (CASC). Tian Hui-1 was launched on 6 May 2012 at 9:10 UTC on a Long March 2 2D booster rocket into a sun-synchronous, polar orbit with an apogee of 490 km (300 mi) and perigee of 505 km (314 mi).[4]

According to the Chinese Ministry of Defense the new satellite carries scientific experiments and is to be used for the evaluation of ground resources and mapping.[5]

Tian Hui 1 is equipped with two different camera systems in the visible and infrared range. The visible light camera is able to produce three-dimensional pictures in the spectral region between 510 and 690 nanometers with a dissolution of approximately 5 meters and a field of view of approximately 25 degrees. The infrared camera reaches a dissolution of approximately 10 meters and covers four wavelengths (430 - 520 Nm, 520 - 610 Nm, 610 - 690 Nm and 760 - 900 Nm).[5]


  1. ^ a b "TH 1". Gunters Space Page. Retrieved 8 March 2013.
  2. ^ a b c "TianHui 1B". Space New Feed. Space News Feed.
  3. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 3 May 2018.
  4. ^ "Chinese Mapping Satellite Successfully Launched to Orbit". Space.com. Retrieved 8 March 2013.
  5. ^ a b "China launches Tianhui-1B via Long March 2D". NASA spaceflight. Retrieved 8 March 2013.