Showing default

CHECKMATE 7, 56166

Orbit data source: Space-Track

CHECKMATE 7, 56166 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/56166?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/56166?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

56166, 2023-050E

Orbit

LEO

Last TLE update

1 day 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 1 day ago

0 CHECKMATE 7
1 56166U 23050E   25213.46626249  .00000052  00000-0  36158-4 0  9990
2 56166  81.0008  18.0684 0007004  98.2715 261.9235 13.84929940117841

Epoch: 2025-08-01T11:11Z

TLE epoch observation values (Epoch: 2025-08-01T11:11:25.079Z)

Latitude

-0.00006°

Longitude

-100.10249°

Altitude

950.034 km

Speed

7.376 km/s

True Right ascension

01h 12m 16s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

62.82228°

Longitude

60.96713°

Altitude

952.385 km

Speed

7.384 km/s

Apparent Right ascension

14h 05m 01s

Apparent Declination

18° 09' 01"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

03:30:28

Azimuth

23.221° NE

Elevation

-28.611°

Doppler factor

Orbital elements

Apogee altitude

948.8 km

Perigee altitude

938.544 km

Semi-major axis

7,321.809 km

Eccentricity

0.0007

Inclination

81.0008°

RAAN

18.0684°

Arg. of periapsis

98.2715°

True anomaly

261.84405°

Mean anomaly

261.9235°

Eccentric anomaly

261.88377°

Mean motion

3.4643 °/min

Orbital period

103.92 mins

BSTAR

0.000036158

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

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

CHECKMATE 7 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.
11 mins	2025-08-02 22:26:19.221Z	356.43° N	2025-08-02 22:32:19.221Z	89.495° E	42.285°	2025-08-02 22:37:19.221Z	159.172° S
5 mins	2025-08-03 00:14:19.221Z	299.671° NW	2025-08-03 00:16:19.221Z	277.255° WNW	16.122°	2025-08-03 00:19:19.221Z	244.597° WSW
4 mins	2025-08-03 10:10:19.221Z	100.07° ESE	2025-08-03 10:12:19.221Z	78.46° E	13.823°	2025-08-03 10:14:19.221Z	58.04° ENE
10 mins	2025-08-03 11:51:19.221Z	195.924° SSW	2025-08-03 11:56:19.221Z	302.944° NW	43.942°	2025-08-03 12:01:19.221Z	5.393° NNE

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

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

Check out CHECKMATE 7, 56166 on other resources

View CHECKMATE 7, 56166 on NASA - NSSDCA Website

View CHECKMATE 7, 56166 on Heavens-Above

View CHECKMATE 7, 56166 on Keep Track

View CHECKMATE 7, 56166 on Celestrak

View CHECKMATE 7, 56166 on Gunter's Space Page

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