Tianhui 1B

Chinese Earth observation satellite

Tianhui I-02

Tianhui I-02

Mission type| Earth observation
Operator| CASC
COSPAR ID| 2012-020A
SATCAT no.| 38256
Start of mission
Launch date| 6 May 2012, 07:10:05 (2012-05-06UTC07:10:05Z) UTC
Rocket| Chang Zheng 2D
Launch site| Jiuquan LA-4/SLS-2
Orbital parameters
Reference system| Geocentric
Regime| Low Earth
Perigee altitude| 492 kilometres (306 mi)[1][2]
Apogee altitude| 504 kilometres (313 mi)[1][2]
Inclination| 97.35 degrees[2]
Period| 94.57 minutes[3]
Epoch| 6 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 2D rocket into a Sun-synchronous, polar orbit with an perigee of 490 km (300 mi) and apogee 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]

## References[edit]

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. 8 May 2012. Retrieved 8 March 2013.
5. ^ a b "China launches Tianhui-1B via Long March 2D". NASA spaceflight. 6 May 2012. Retrieved 8 March 2013.

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