EGS (AJISAI), 16908
Orbit data source: Space-Track
EGS (AJISAI), 16908 is a payload satellite owned by NASDA (JP) in LEO that was launched on Tue, 12 Aug 1986 UTC via an H-1 launch vehicle from the Tanegashima Space Center (TNSTA). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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16908 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
JP / JPNRelated business
Manufacturer
Kawasaki
Mission
Operational Civil Geodetic
Bus & Motor
EGP, Unknown motor
Mass
685 kg wet, 685 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Sphere, 1.1 m
Radar Cross Section
3.631 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 EGS (AJISAI)
1 16908U 86061A 25286.45547787 -.00000099 00000-0 -11301-4 0 9995
2 16908 50.0083 186.0899 0011150 272.9106 259.6230 12.44513678449665Epoch: 2025-10-13T10:55Z
TLE epoch observation values (Epoch: 2025-10-13T10:55:53.287Z)
Latitude
5.77684°
Longitude
175.01549°
Altitude
1,489.04 km
Speed
7.12 km/s
True Right ascension
00h 04m 58s
True Declination
5° 44' 45"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:35:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,496.972 km
Perigee altitude
1,479.43 km
Semi-major axis
7,866.338 km
Eccentricity
0.00112
Inclination
50.0083°
RAAN
186.0899°
Arg. of periapsis
272.9106°
True anomaly
259.49735°
Mean anomaly
259.623°
Eccentric anomaly
259.56017°
Mean motion
3.11089 °/min
Orbital period
115.72 mins
BSTAR
-0.000011301
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Other satellites on launch #61 in the year 1986 (1986-08-12 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.EGS (AJISAI) Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2025-10-14 01:55:09.730Z | 305.987° NW | 2025-10-14 02:03:09.730Z | 40.718° NE | 42.813° | 2025-10-14 02:11:09.730Z | 109.457° ESE |
| 15 mins | 2025-10-14 03:57:09.730Z | 293.833° NW | 2025-10-14 04:04:09.730Z | 232.493° WSW | 36.147° | 2025-10-14 04:12:09.730Z | 159.548° S |
| 14 mins | 2025-10-14 18:54:09.730Z | 189.876° SSW | 2025-10-14 19:00:09.730Z | 134.907° SE | 33.235° | 2025-10-14 19:08:09.730Z | 66.613° ENE |
| 16 mins | 2025-10-14 20:54:09.730Z | 246.282° WSW | 2025-10-14 21:02:09.730Z | 345.422° N | 43.813° | 2025-10-14 21:10:09.730Z | 55.057° ENE |
| 15 mins | 2025-10-14 22:58:09.730Z | 288.983° WNW | 2025-10-14 23:05:09.730Z | 359.023° N | 35.428° | 2025-10-14 23:13:09.730Z | 65.09° ENE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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