Key statistics
Satellite ECHOSTAR 21 at a glance.
Uptime
3014
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
GEO
Geostationary Orbit
Inclination
1.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for ECHOSTAR 21.
Object identification
Identified? True
Debris? False
Object name: ECHOSTAR 21
International designator: 2017-032A
Object number (NORAD): 42749
Object ID (CCSDS): 42749
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1436.075 minutes
Inclination: 1.9118 deg
SMA: 42164.309 km
Apoapsis: 35796.535 km
Periapsis: 35775.813 km
RAAN: 337.926 deg
Eccentricy: 0.00024572
Argument of periapsis: 186.4806 deg
Mean anomaly: 149.4469 deg
Mean motion: 1.00273294 rev/day
Mean motion (dot): 0.00000063 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 3:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 7, 2025, 9:05 p.m. UTC
TLE line 0: 0 ECHOSTAR 21
TLE line 1: 1 42749U 17032A 25250.87885727 .00000063 00000-0 00000-0 0 9994
TLE line 2: 2 42749 1.9118 337.9260 0002457 186.4806 149.4469 1.00273294 30265
Live tracking on map
Real-time ground track for satellite ECHOSTAR 21.
In-orbit conjunctions
There are no conjunctions computed for ECHOSTAR 21, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Echostar 21, formerly known as TerreStar 2, is a geostationary communications satellite built by Space System/Loral company. Equipped with S-band transponders, satellite is tasked with providing mobile broadband services over Europe. The spacecraft, based on SSL’s 1300 bus, will be located at the 10.25° East orbital slot.
ECHOSTAR 21 was lifted into orbit during the mission ‘Proton-M Briz-M | Echostar 21’, on board a Proton-M Briz-M space rocket.
The launch took place on June 8, 2017, 3:45 a.m. from 81/24 (81P).
For more information about the launch, click the button.
Proton-M Briz-M | Echostar 21
Agency: N/A
Status: Launch Successful
Launch date: June 8, 2017, 3:45 a.m. UTC
Rocket: Proton-M Briz-M
Launch pad: 81/24 (81P)
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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Latest news about this satellite
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