Key statistics
Satellite ATLAS 5 CENTAUR R/B at a glance.
Uptime
3559
Days in orbit
Revolutions
≈ 15.0
Per day
Orbit
LEO
Low Earth Orbit
Inclination
64.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for ATLAS 5 CENTAUR R/B.
Object identification
Identified? True
Debris? False
Object name: ATLAS 5 CENTAUR R/B
International designator: 2015-058Q
Object number (NORAD): 40978
Object ID (CCSDS): 40978
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 95.974 minutes
Inclination: 64.7671 deg
SMA: 6943.788 km
Apoapsis: 663.593 km
Periapsis: 467.714 km
RAAN: 158.4372 deg
Eccentricy: 0.0141046
Argument of periapsis: 188.467 deg
Mean anomaly: 171.4067 deg
Mean motion: 15.00403469 rev/day
Mean motion (dot): 0.00003208 rev/day2
B* drag term: 0.00021885 1/REarth
Two-line elements (TLE)
Creation date: July 5, 2025, 5:45 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 5, 2025, 7:21 a.m. UTC
TLE line 0: 0 ATLAS 5 CENTAUR R/B
TLE line 1: 1 40978U 15058Q 25186.30629583 .00003208 00000-0 21885-3 0 9995
TLE line 2: 2 40978 64.7671 158.4372 0141046 188.4670 171.4067 15.00403469 63097
Live tracking on map
Real-time ground track for satellite ATLAS 5 CENTAUR R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object ATLAS 5 CENTAUR R/B.
Associated space launch
Classified payload for the U.S. National Reconnaissance Office.
ATLAS 5 CENTAUR R/B was lifted into orbit during the mission ‘Atlas V 401 | NROL-55 (Multipayload mission)’, on board a Atlas V 401 space rocket.
The launch took place on Oct. 8, 2015, 12:49 p.m. from Space Launch Complex 3E.
For more information about the launch, click the button.
Atlas V 401 | NROL-55 (Multipayload mission)
Agency: N/A
Status: Launch Successful
Launch date: Oct. 8, 2015, 12:49 p.m. UTC
Rocket: Atlas V 401
Launch pad: Space Launch Complex 3E
Location: Vandenberg SFB, CA, USA
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