KEPLER-21, 56218
Orbit data source: Space-Track
KEPLER-21, 56218 is a payload satellite owned by Kepler Comms (CA) in SSO that was launched on Sat, 15 Apr 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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56218 intel report (Beta)
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Identifier
Orbit
Country
CARelated business
Manufacturer
KEPLER/UTIAS
Mission
Operational Commercial Communications
Bus & Motor
CUBESAT 6U, Unknown motor
Mass
15 kg wet, 15 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 0.3 m
Radar Cross Section
0.109 m², Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 KEPLER-21
1 56218U 23054AS 26133.18341689 .00104849 00000-0 41921-3 0 9997
2 56218 97.2902 50.6538 0006604 120.0108 240.1819 15.86245209173657Epoch: 2026-05-13T04:24Z
TLE epoch observation values (Epoch: 2026-05-13T04:24:07.219Z)
Latitude
-0.00003°
Longitude
113.67663°
Altitude
318.204 km
Speed
7.716 km/s
True Right ascension
03h 22m 36s
True Declination
0° 00' 00"
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
23:17:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
314.111 km
Perigee altitude
305.277 km
Semi-major axis
6,687.831 km
Eccentricity
0.00066
Inclination
97.2902°
RAAN
50.6538°
Arg. of periapsis
120.0108°
True anomaly
240.11627°
Mean anomaly
240.1819°
Eccentric anomaly
240.14908°
Mean motion
3.9684 °/min
Orbital period
90.72 mins
BSTAR
0.00041921
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Other satellites on launch #54 in the year 2023 (2023-04-15 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.KEPLER-21 Visibility
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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. |
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| KEPLER-21 is likely not visible in the next few days. |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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