Tianlian I-01

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Tianlian I-01
Mission type Communications
Operator CASC
COSPAR ID 2008-019A
SATCAT no. 32779
Spacecraft properties
Spacecraft type Tianlian I
Bus DFH-3
Manufacturer CAST
Start of mission
Launch date 25 April 2008, 15:35:11 (2008-04-25UTC15:35:11Z) UTC[1]
Rocket Chang Zheng 3C
Launch site Xichang LC-2
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude 80.4° east
Perigee 35,638 kilometres (22,144 mi)[2]
Apogee 35,949 kilometres (22,338 mi)[2]
Inclination 1.03 degrees[2]
Period 1436.14 minutes[2]
Epoch 23 January 2015, 21:35:31 UTC[2]

Tianlian I-01 (Simplified Chinese: 天链一号01星, Traditional Chinese: 天鏈一號01星) is the first Tracking and Data Relay Satellite (TDRS) launched by People's Republic of China, and the first satellite of Tianlian I TDRS series.[3]

The satellite[edit]

The satellite has multiple roles and will especially serve for China's manned spaceflight. Its first task could be for the Shenzhou 7 communication.


The satellite was launched successfully by the Long March 3C rocket in Xichang Satellite Launch Centre at local time 23:35 April 25, 2008. It was the 105th launch of the Long March Rocket Family.

The rocket had 3 stages, 2 roll boosters[clarification needed], a 55 m height; and was liquid-fueled. Its initial weight was ~343 t.[clarification needed]

00:00 April 26, 2008, the Xi'an Satellite Control Centre received the feedback signal, which showed the satellite accurately entered its predesigned orbit.

08:25 GMT April 30, 2008, the satellite was announced to be successfully set at E. 77 degrees over the equator.[4]


  1. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 30 October 2013. 
  2. ^ a b c d e "CTDRS Satellite details 2008-019A NORAD 32779". N2YO. 23 January 2015. Retrieved 25 January 2015. 
  3. ^ 我国成功发射首颗数据中继卫星(组图)
  4. ^ China sets up first space station for spacecraft data relay_English_Xinhua