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CHECKMATE 1, 56168

Orbit data source: Space-Track

CHECKMATE 1, 56168 is a payload satellite owned by SDA (US) in LEO that was launched on Sun, 02 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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Iframe URL

https://www.satcat.com/sats-embedded/56168?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

56168, 2023-050G

Orbit

LEO

Last TLE update

12 hours ago

Origin

Space Development Agency (US)

Manufacturer

York Space Sys

Mission

Operational Defense Communications

Bus & Motor

S-CLASS, Unknown motor

Mass

~300 kg wet, ~300 kg dry

Launch date (UTC)

2023-04-02 (2 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 1 Pan, 1.0 m

Radar Cross Section

0.945 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 12 hours ago

0 CHECKMATE 1
1 56168U 23050G   25213.86491284  .00000072  00000-0  54191-4 0  9994
2 56168  81.0047  18.1135 0011791 125.7144 234.5111 13.84896935117899

Epoch: 2025-08-01T20:45Z

TLE epoch observation values (Epoch: 2025-08-01T20:45:28.469Z)

Latitude

-0.00001°

Longitude

116.03557°

Altitude

954.448 km

Speed

7.372 km/s

True Right ascension

01h 12m 27s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-76.41578°

Longitude

-23.75817°

Altitude

980.191 km

Speed

7.358 km/s

Apparent Right ascension

11h 24m 58s

Apparent Declination

-64° 39' 07"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

22:08:54

Azimuth

197.841° SSW

Elevation

-62.914°

Doppler factor

Orbital elements

Apogee altitude

952.422 km

Perigee altitude

935.155 km

Semi-major axis

7,321.926 km

Eccentricity

0.00118

Inclination

81.0047°

RAAN

18.1135°

Arg. of periapsis

125.7144°

True anomaly

234.40118°

Mean anomaly

234.5111°

Eccentric anomaly

234.45613°

Mean motion

3.46422 °/min

Orbital period

103.92 mins

BSTAR

0.000054191

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Other satellites on launch #50 in the year 2023 (2023-04-02 UTC)

CHECKMATE 1 Visibility forecast

Observer location: undefined°, undefined°

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.
9 mins	2025-08-02 10:44:37.798Z	139.579° SSE	2025-08-02 10:49:37.798Z	81.657° E	23.112°	2025-08-02 10:53:37.798Z	37.566° NE
10 mins	2025-08-02 12:29:37.798Z	219.879° SW	2025-08-02 12:33:37.798Z	277.291° WNW	34.777°	2025-08-02 12:39:37.798Z	356.639° N
8 mins	2025-08-02 21:37:37.798Z	24.805° NE	2025-08-02 21:41:37.798Z	75.931° E	22.65°	2025-08-02 21:45:37.798Z	120.51° SE
9 mins	2025-08-02 23:22:37.798Z	329.803° NNW	2025-08-02 23:26:37.798Z	261.199° W	35.715°	2025-08-02 23:31:37.798Z	197.611° SSW

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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Authenticating...

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Check out CHECKMATE 1, 56168 on other resources

View CHECKMATE 1, 56168 on NASA - NSSDCA Website

View CHECKMATE 1, 56168 on Heavens-Above

View CHECKMATE 1, 56168 on Keep Track

View CHECKMATE 1, 56168 on Celestrak

View CHECKMATE 1, 56168 on Gunter's Space Page

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