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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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ISO8601 Format

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 (7 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, Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 11 hours ago

TLE from 11 hours ago

0 SPAWAR-CAL-O
1 43766U 18099J   26137.61458546  .00011912  00000-0  36445-3 0  9990
2 43766  97.4346 201.3588 0008787  50.9179 309.2843 15.33958113408830

Epoch: 2026-05-17T14:45Z

TLE epoch observation values (Epoch: 2026-05-17T14:45:00.183Z)

Latitude

-0.00013°

Longitude

104.79339°

Altitude

463.321 km

Speed

7.637 km/s

True Right ascension

13h 25m 26s

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

10:40:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

466.975 km

Perigee altitude

454.956 km

Semi-major axis

6,839.102 km

Eccentricity

0.00088

Inclination

97.4346°

RAAN

201.3588°

Arg. of periapsis

50.9179°

True anomaly

309.20631°

Mean anomaly

309.2843°

Eccentric anomaly

309.24531°

Mean motion

3.83747 °/min

Orbital period

93.81 mins

BSTAR

0.00036445

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

HAWK-A, 43765

ORBWEAVER 2, 43785 (Decayed)

POLAR SCOUT YUKON, 43808

ITASAT, 43786

JY1SAT, 43803

CORVUS BC4, 43767

PW-SAT2, 43814 (Decayed)

SIRION PATHFINDER-2, 43759

SPACEBEE-7, 43816 (Decayed)

EXCITE, 43819

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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.
4 mins	2026-05-18 03:25:49.526Z	106.155° ESE	2026-05-18 03:27:49.526Z	66.214° ENE	16.694°	2026-05-18 03:29:49.526Z	28.486° NE
4 mins	2026-05-18 04:58:49.526Z	222.799° SW	2026-05-18 05:00:49.526Z	271.467° WNW	21.261°	2026-05-18 05:02:49.526Z	312.859° NW

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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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-05-17T14:45:00.183Z)

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: 11 hours ago