BLACKJACK ACES-2, 56955
Orbit data source: Space-Track
BLACKJACK ACES-2, 56955 is a payload satellite owned by DARPA (US) in SSO that was launched on Mon, 12 Jun 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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56955 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
BLCAN/LMSS
Mission
Operational Defense Communications
Bus & Motor
X-SAT, Unknown motor
Mass
~200 kg wet, ~200 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 3.6 m
Radar Cross Section
0.875 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 BLACKJACK ACES-2
1 56955U 23084Z 26107.21553729 .00004139 00000-0 20534-3 0 9991
2 56955 97.6107 242.0764 0002874 137.0271 223.1188 15.18281787157926Epoch: 2026-04-17T05:10Z
TLE epoch observation values (Epoch: 2026-04-17T05:10:22.421Z)
Latitude
0°
Longitude
-40.86895°
Altitude
515.561 km
Speed
7.605 km/s
True Right ascension
16h 08m 18s
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
02:12:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
509.989 km
Perigee altitude
506.031 km
Semi-major axis
6,886.147 km
Eccentricity
0.00029
Inclination
97.6107°
RAAN
242.0764°
Arg. of periapsis
137.0271°
True anomaly
223.0963°
Mean anomaly
223.1188°
Eccentric anomaly
223.10755°
Mean motion
3.79821 °/min
Orbital period
94.78 mins
BSTAR
0.00020534
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Other satellites on launch #84 in the year 2023 (2023-06-12 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.BLACKJACK ACES-2 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-04-17 21:32:57.755Z | 23.005° NE | 2026-04-17 21:35:57.755Z | 74.398° E | 37.325° | 2026-04-17 21:38:57.755Z | 173.055° S |
| 4 mins | 2026-04-18 08:12:57.755Z | 111.886° ESE | 2026-04-18 08:14:57.755Z | 71.111° E | 20.911° | 2026-04-18 08:16:57.755Z | 29.062° NE |
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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