Key statistics
Satellite EPSILON R/B at a glance.
Uptime
4259
Days in orbit
Revolutions
≈ 14.0
Per day
Orbit
LEO
Low Earth Orbit
Inclination
29.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for EPSILON R/B.
Object identification
Identified? True
Debris? False
Object name: EPSILON R/B
International designator: 2013-049C
Object number (NORAD): 39255
Object ID (CCSDS): 39255
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 102.744 minutes
Inclination: 29.7481 deg
SMA: 7266.597 km
Apoapsis: 970.652 km
Periapsis: 806.273 km
RAAN: 162.8884 deg
Eccentricy: 0.0113106
Argument of periapsis: 203.2733 deg
Mean anomaly: 156.2701 deg
Mean motion: 14.01542054 rev/day
Mean motion (dot): 0.00000193 rev/day2
B* drag term: 0.000073355 1/REarth
Two-line elements (TLE)
Creation date: May 12, 2025, 2:31 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 11, 2025, 5:52 p.m. UTC
TLE line 0: 0 EPSILON R/B
TLE line 1: 1 39255U 13049C 25131.74494598 .00000193 00000-0 73355-4 0 9993
TLE line 2: 2 39255 29.7481 162.8884 0113106 203.2733 156.2701 14.01542054597409
Live tracking on map
Real-time ground track for satellite EPSILON R/B.
Associated space launch
Hisaki, also known as the Spectroscopic Planet Observatory for Recognition of Interaction of Atmosphere (SPRINT-A) is a Japanese ultraviolet astronomy satellite operated by the Japan Aerospace Exploration Agency (JAXA). Hisaki carries an extreme ultraviolet spectrometer which will be used to study the composition of the atmospheres and the behavior of the magnetospheres of the planets of the Solar System.
EPSILON R/B was lifted into orbit during the mission ‘Epsilon | Hisaki (SPRINT-A)’, on board a Epsilon space rocket.
The launch took place on Sept. 14, 2013, 5 a.m. from Mu Center.
For more information about the launch, click the button.
Epsilon | Hisaki (SPRINT-A)
Agency: N/A
Status: Launch Successful
Launch date: Sept. 14, 2013, 5 a.m. UTC
Rocket: Epsilon
Launch pad: Mu Center
Location: Uchinoura Space Center, Japan
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