Key statistics
Satellite UME 1 (ISS 1) at a glance.
Uptime
18130
Days in orbit
Revolutions
≈ 13.7
Per day
Orbit
LEO
Low Earth Orbit
Inclination
69.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for UME 1 (ISS 1).
Object identification
Identified? True
Debris? False
Object name: UME 1 (ISS 1)
International designator: 1976-019A
Object number (NORAD): 8709
Object ID (CCSDS): 8709
Country: JAPAN (JPN)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.978 minutes
Inclination: 69.6724 deg
SMA: 7371.548 km
Apoapsis: 1002.949 km
Periapsis: 983.878 km
RAAN: 278.9181 deg
Eccentricy: 0.00129353
Argument of periapsis: 231.6145 deg
Mean anomaly: 162.998 deg
Mean motion: 13.71717499 rev/day
Mean motion (dot): 0.00000042 rev/day2
B* drag term: 0.00010422858 1/REarth
Two-line elements (TLE)
Creation date: Oct. 19, 2025, 2:20 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 18, 2025, 11:05 p.m. UTC
TLE line 0: 0 UME 1 (ISS 1)
TLE line 1: 1 08709U 76019A 25291.96202006 .00000042 00000-0 10423-3 0 9990
TLE line 2: 2 08709 69.6724 278.9181 0012935 231.6145 162.9980 13.71717499484019
Live tracking on map
Real-time ground track for satellite UME 1 (ISS 1).
Associated space launch
Japanese ionospheric research satellite
UME 1 (ISS 1) was lifted into orbit during the mission ‘N-I | Ume 1’, on board a N-I space rocket.
The launch took place on Feb. 29, 1976, 3:30 a.m. from Osaki Launch Complex.
For more information about the launch, click the button.
N-I | Ume 1
Agency: N/A
Status: Launch Successful
Launch date: Feb. 29, 1976, 3:30 a.m. UTC
Rocket: N-I
Launch pad: Osaki Launch Complex
Location: Tanegashima Space Center, Japan
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