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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
16908 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
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: 18 hours ago
TLE from 18 hours ago
0 EGS (AJISAI)
1 16908U 86061A 25256.24922375 -.00000082 00000-0 10556-3 0 9990
2 16908 50.0083 278.9754 0011320 195.4389 288.7011 12.44513273445901Epoch: 2025-09-13T05:58Z
TLE epoch observation values (Epoch: 2025-09-13T05:58:52.932Z)
Latitude
39.54044°
Longitude
-26.78933°
Altitude
1,487.928 km
Speed
7.126 km/s
True Right ascension
03h 41m 39s
True Declination
39° 23' 15"
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
16:04:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,497.108 km
Perigee altitude
1,479.298 km
Semi-major axis
7,866.34 km
Eccentricity
0.00113
Inclination
50.0083°
RAAN
278.9754°
Arg. of periapsis
195.4389°
True anomaly
288.57818°
Mean anomaly
288.7011°
Eccentric anomaly
288.63964°
Mean motion
3.11089 °/min
Orbital period
115.72 mins
BSTAR
0.00010556
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #61 in the year 1986 (1986-08-12 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2025-09-14 02:37:14.075Z | 176.907° S | 2025-09-14 02:44:14.075Z | 121.554° SE | 25.071° | 2025-09-14 02:50:14.075Z | 75.78° E |
| 16 mins | 2025-09-14 04:37:14.075Z | 231.95° WSW | 2025-09-14 04:45:14.075Z | 71.898° E | 44.762° | 2025-09-14 04:53:14.075Z | 56.554° ENE |
| 15 mins | 2025-09-14 06:40:14.075Z | 277.864° WNW | 2025-09-14 06:47:14.075Z | 344.047° N | 36.994° | 2025-09-14 06:55:14.075Z | 58.641° ENE |
| 16 mins | 2025-09-14 08:43:14.075Z | 301.977° NW | 2025-09-14 08:51:14.075Z | 19.797° NNE | 36.916° | 2025-09-14 08:59:14.075Z | 85.714° E |
| 16 mins | 2025-09-14 10:46:14.075Z | 303.469° NW | 2025-09-14 10:53:14.075Z | 272.45° WNW | 44.913° | 2025-09-14 11:02:14.075Z | 128.174° SE |
| 13 mins | 2025-09-14 12:48:14.075Z | 283.17° WNW | 2025-09-14 12:54:14.075Z | 236.033° WSW | 24.895° | 2025-09-14 13:01:14.075Z | 182.065° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|