Key statistics
Satellite HORYU 4 at a glance.
Uptime
3430
Days in orbit
Revolutions
≈ 15.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
31.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for HORYU 4.
Object identification
Identified? True
Debris? False
Object name: HORYU 4
International designator: 2016-012D
Object number (NORAD): 41340
Object ID (CCSDS): 41340
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 93.632 minutes
Inclination: 30.9972 deg
SMA: 6830.354 km
Apoapsis: 456.619 km
Periapsis: 447.819 km
RAAN: 296.4418 deg
Eccentricy: 0.0006442
Argument of periapsis: 8.8671 deg
Mean anomaly: 351.2088 deg
Mean motion: 15.37934857 rev/day
Mean motion (dot): 0.00016062 rev/day2
B* drag term: 0.00041347 1/REarth
Two-line elements (TLE)
Creation date: July 9, 2025, 2:22 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 3:02 p.m. UTC
TLE line 0: 0 HORYU 4
TLE line 1: 1 41340U 16012D 25189.62705633 .00016062 00000-0 41347-3 0 9996
TLE line 2: 2 41340 30.9972 296.4418 0006442 8.8671 351.2088 15.37934857517264
Live tracking on map
Real-time ground track for satellite HORYU 4.
In-orbit conjunctions
There are no conjunctions computed for HORYU 4, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Astro-H is the 6th satellite in a series of X-ray telescopes by JAXA and ISAS. Its 4 instruments on board will cover the X-ray and Gamma ray regions. This region consists of photons with energy ranging from 0.3-600keV, and the telescope will provide the highest resolution ever achieved of 3-10 keV bands. The craft weighs 2.7 tonnes and will be placed into a circular orbit 575km above the ground, with an inclination of 31 degrees.
HORYU 4 was lifted into orbit during the mission ‘H-IIA 202 | Astro-H (Hitomi)’, on board a H-IIA space rocket.
The launch took place on Feb. 17, 2016, 8:45 a.m. from Yoshinobu Launch Complex LP-1.
For more information about the launch, click the button.

H-IIA 202 | Astro-H (Hitomi)
Agency: N/A
Status: Launch Successful
Launch date: Feb. 17, 2016, 8:45 a.m. UTC
Rocket: H-IIA
Launch pad: Yoshinobu Launch Complex LP-1
Location: Tanegashima Space Center, Japan
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.