TDRS-12
| TDRS-L at the Astrotech payload processing facility | |
| Mission type | Communications | 
|---|---|
| Operator | NASA | 
| COSPAR ID | 2014-004A | 
| SATCAT no. | 39504 | 
| Mission duration | Planned: 15 years Elapsed: 11 years, 4 months, 25 days | 
| Spacecraft properties | |
| Bus | BSS-601HP | 
| Manufacturer | Boeing | 
| Launch mass | 3,454 kg (7,615 lb) | 
| Start of mission | |
| Launch date | 24 January 2014, 02:33 UTC | 
| Rocket | Atlas V 401 | 
| Launch site | Cape Canaveral SLC-41 | 
| Contractor | United Launch Alliance | 
| Orbital parameters | |
| Reference system | Geocentric | 
| Regime | Geosynchronous orbit | 
| Perigee altitude | 35,785 kilometers (22,236 mi) | 
| Apogee altitude | 35,797 kilometers (22,243 mi) | 
| Inclination | 6.77 degrees | 
| Period | 1436.03 minutes | 
| Epoch | 22 January 2015, 07:10:47 UTC | 
TDRS-12, known before launch as TDRS-L, is an American communications satellite operated by NASA as part of the Tracking and Data Relay Satellite System. The twelfth Tracking and Data Relay Satellite, it is the second third-generation spacecraft to be launched, following TDRS-11 in 2013.