OBJECT D, 43761

Orbit data source: Space-Track

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Recently launched and/or uncataloged RSOs may have evolving metadata. Metadata may include the following, but is not limited to: Owner, Manufacturer, Bus, Motor, and Mission.

OBJECT D, 43761 is a satellite 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). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.

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<iframe src="https://www.satcat.com/sats-embedded/43761?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/43761?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

43761, 2018-099D

Orbit

SSO

Country

TBD

Related business

None

Manufacturer

Unknown

Mission

Non-operational Amateur Technology

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

2018-12-03 (8 years ago)

Launch vehicle

FALCON 9

Launch site

Air Force Western Test Range (AFWTR)

Object type

Unknown

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: 22 hours ago

TLE from 22 hours ago

0 OBJECT D
1 43761U 18099D   26235.56571862  .00001638  00000-0  11381-3 0  9991
2 43761  97.4137 273.9104 0013048 111.5856 248.6764 15.06810135422255

Epoch: 2026-08-23T13:34Z

TLE epoch observation values (Epoch: 2026-08-23T13:34:38.088Z)

Latitude

-0°

Longitude

98.39176°

Altitude

552.323 km

Speed

7.584 km/s

True Right ascension

18h 15m 38s

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

02:51:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

551.969 km

Perigee altitude

533.908 km

Semi-major axis

6,921.076 km

Eccentricity

0.0013

Inclination

97.4137°

RAAN

273.9104°

Arg. of periapsis

111.5856°

True anomaly

248.5372°

Mean anomaly

248.6764°

Eccentric anomaly

248.60679°

Mean motion

3.76949 °/min

Orbital period

95.5 mins

BSTAR

0.00011381

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

EAGLET 1, 43790

CENTAURI-1, 43809

VESTA-1, 43781 (Decayed)

FLOCK 3S 1, 43769 (Decayed)

SPACEBEE-6, 43818 (Decayed)

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OBJECT D 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.
7 mins	2026-08-24 15:37:55.713Z	7.04° NNE	2026-08-24 15:41:55.713Z	242.394° WSW	42.272°	2026-08-24 15:44:55.713Z	200.977° SSW
5 mins	2026-08-25 02:22:55.713Z	139.815° SSE	2026-08-25 02:24:55.713Z	75.661° E	37.987°	2026-08-25 02:27:55.713Z	1.944° NNE

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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 OBJECT D, 43761 on other resources

View OBJECT D, 43761 on Heavens-Above

View OBJECT D, 43761 on Keep Track

View OBJECT D, 43761 on Celestrak

View OBJECT D, 43761 on Gunter's Space Page

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

OBJECT D, 43761

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-08-23T13:34:38.088Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

OBJECT D Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT D, 43761 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago