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SPAWAR-CAL-O, 43766

Orbit data source: Space-Track

SPAWAR-CAL-O, 43766 is a payload satellite owned by SPAWAR (US) in SSO that was launched on Mon, 03 Dec 2018 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/43766?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/43766?theme=dark&initialShowStats=false

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Identifier

43766, 2018-099J

Orbit

SSO

Country

Related business

United States Navy (US)

Manufacturer

SPAWAR?

Mission

Operational Defense Calibration

Bus & Motor

CUBESAT 1U, Unknown motor

Mass

1 kg wet, 1 kg dry

Launch date (UTC)

2018-12-03 (8 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.1 m

Radar Cross Section

0.015 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 17 hours ago

TLE from 17 hours ago

0 SPAWAR-CAL-O
1 43766U 18099J   26255.13050086  .00015057  00000-0  40284-3 0  9995
2 43766  97.4247 319.9880 0006635 348.8787  11.2310 15.38122756426879

Epoch: 2026-09-12T03:07Z

TLE epoch observation values (Epoch: 2026-09-12T03:07:55.274Z)

Latitude

-0.00003°

Longitude

-78.13622°

Altitude

450.329 km

Speed

7.645 km/s

True Right ascension

21h 19m 57s

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

12:23:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

453.133 km

Perigee altitude

444.074 km

Semi-major axis

6,826.74 km

Eccentricity

0.00066

Inclination

97.4247°

RAAN

319.988°

Arg. of periapsis

348.8787°

True anomaly

11.24582°

Mean anomaly

11.231°

Eccentric anomaly

11.23841°

Mean motion

3.84789 °/min

Orbital period

93.56 mins

BSTAR

0.00040284

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Other satellites on launch #99 in the year 2018 (2018-12-03 UTC)

OBJECT Q, 43772 (Decayed)

MOVE-II, 43780 (Decayed)

KAZSCISAT-1, 43787 (Decayed)

CSIM, 43793 (Decayed)

SIRION PATHFINDER-2, 43759

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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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SPAWAR-CAL-O 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.
5 mins	2026-09-13 04:15:02.333Z	149.383° SSE	2026-09-13 04:17:02.333Z	103.385° ESE	51.962°	2026-09-13 04:20:02.333Z	359.732° N
5 mins	2026-09-13 17:11:02.333Z	24.88° NE	2026-09-13 17:13:02.333Z	144.47° SSE	60.653°	2026-09-13 17:16:02.333Z	184.96° SSW

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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 SPAWAR-CAL-O, 43766 on other resources

View SPAWAR-CAL-O, 43766 on NASA - NSSDCA Website

View SPAWAR-CAL-O, 43766 on Heavens-Above

View SPAWAR-CAL-O, 43766 on Keep Track

View SPAWAR-CAL-O, 43766 on Celestrak

View SPAWAR-CAL-O, 43766 on Gunter's Space Page

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

SPAWAR-CAL-O, 43766

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2026-09-12T03:07:55.274Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #99 in the year 2018 (2018-12-03 UTC)

SPAWAR-CAL-O Visibility forecast

Co-orbital & Co-planar RSOs

Check out SPAWAR-CAL-O, 43766 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago