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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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<iframe src="https://www.satcat.com/sats-embedded/56955?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/56955?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

56955, 2023-084Z

Orbit

SSO

Country

Related business

Defense Advanced Research Projects Agency (US)

Manufacturer

BLCAN/LMSS

Mission

Operational Defense Communications

Bus & Motor

X-SAT, Unknown motor

Mass

~200 kg wet, ~200 kg dry

Launch date (UTC)

2023-06-12 (3 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 3.6 m

Radar Cross Section

0.875 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 BLACKJACK ACES-2
1 56955U 23084Z   26115.25602996  .00007690  00000-0  37958-3 0  9998
2 56955  97.6120 250.1662 0002843 133.2127 226.9344 15.18175861159148

Epoch: 2026-04-25T06:08Z

TLE epoch observation values (Epoch: 2026-04-25T06:08:40.988Z)

Latitude

-0.00006°

Longitude

-55.28159°

Altitude

515.774 km

Speed

7.605 km/s

True Right ascension

16h 40m 39s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

22:51:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

510.289 km

Perigee altitude

506.373 km

Semi-major axis

6,886.468 km

Eccentricity

0.00028

Inclination

97.612°

RAAN

250.1662°

Arg. of periapsis

133.2127°

True anomaly

226.9106°

Mean anomaly

226.9344°

Eccentric anomaly

226.9225°

Mean motion

3.79794 °/min

Orbital period

94.79 mins

BSTAR

0.00037958

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Other satellites on launch #84 in the year 2023 (2023-06-12 UTC)

OBJECT BR, 56989 (Decayed)

SPACEBEE-179, 56969 (Decayed)

NUSAT-40 (C SHOEMAKER), 56943

NUSAT-42 (M WONENBURGER), 56966

BLACKJACK ACES-1, 56956

OBJECT BW, 56994 (Decayed)

OTTER PUP, 56933

OUTPOST MISSION 1, 56226

OBJECT BQ, 56231 (Decayed)

SPACEBEE-171, 56980 (Decayed)

SPACEBEE-168, 56984 (Decayed)

SKYKRAFT-3, 56229 (Decayed)

ICEYE-X26, 56961

OBJECT K, 56941 (Decayed)

ORBITER SN3, 56960

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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.

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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.
4 mins	2026-04-25 20:58:11.274Z	58.873° ENE	2026-04-25 21:00:11.274Z	97.023° ESE	17.255°	2026-04-25 21:02:11.274Z	133.307° SE
4 mins	2026-04-25 22:32:11.274Z	332.157° NNW	2026-04-25 22:34:11.274Z	283.992° WNW	23.995°	2026-04-25 22:36:11.274Z	241.185° WSW
6 mins	2026-04-26 09:10:11.274Z	179.874° S	2026-04-26 09:12:11.274Z	215.655° SW	40.268°	2026-04-26 09:16:11.274Z	341.49° N

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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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Check out BLACKJACK ACES-2, 56955 on other resources

View BLACKJACK ACES-2, 56955 on NASA - NSSDCA Website

View BLACKJACK ACES-2, 56955 on Heavens-Above

View BLACKJACK ACES-2, 56955 on Keep Track

View BLACKJACK ACES-2, 56955 on Celestrak

View BLACKJACK ACES-2, 56955 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

BLACKJACK ACES-2, 56955

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-04-25T06:08:40.988Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #84 in the year 2023 (2023-06-12 UTC)

BLACKJACK ACES-2 Visibility forecast

Co-orbital & Co-planar RSOs

Check out BLACKJACK ACES-2, 56955 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 hours ago