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EXCITE, 43819

Orbit data source: Space-Track

EXCITE, 43819 is a payload satellite owned by DARPA (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/43819?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/43819?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

43819, 2018-099BP

Orbit

SSO

Country

Related business

Defense Advanced Research Projects Agency (US)

Manufacturer

NovaWurks

Mission

Operational Defense Technology

Bus & Motor

HISAT, Unknown motor

Mass

~155 kg wet, ~155 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, 0.5 m

Radar Cross Section

1.500 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 EXCITE
1 43819U 18099BP  26170.66884266  .00001690  00000-0  11804-3 0  9997
2 43819  97.3964 209.3389 0017832 347.7961  12.2832 15.06511693412122

Epoch: 2026-06-19T16:03Z

TLE epoch observation values (Epoch: 2026-06-19T16:03:08.005Z)

Latitude

-0.00008°

Longitude

60.66105°

Altitude

537.874 km

Speed

7.6 km/s

True Right ascension

13h 57m 21s

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

21:38:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

556.196 km

Perigee altitude

531.509 km

Semi-major axis

6,921.99 km

Eccentricity

0.00178

Inclination

97.3964°

RAAN

209.3389°

Arg. of periapsis

347.7961°

True anomaly

12.32677°

Mean anomaly

12.2832°

Eccentric anomaly

12.30497°

Mean motion

3.76874 °/min

Orbital period

95.52 mins

BSTAR

0.00011804

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

OBJECT AH, 43789 (Decayed)

SUOMI100, 43804

CENTAURI-1, 43809

MOVE-II, 43780 (Decayed)

SNUGLITE, 43784

RANGE A, 43773

SKYSAT C13, 43802

KAZSCISAT-1, 43787 (Decayed)

OBJECT P, 43771

OBJECT Q, 43772

UPPER FREE FLYER, 43763

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EXCITE 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	2026-06-22 14:46:27.723Z	45.786° ENE	2026-06-22 14:48:27.723Z	83.198° E	23.919°	2026-06-22 14:51:27.723Z	146.641° SSE
6 mins	2026-06-23 03:04:27.723Z	197.493° SSW	2026-06-23 03:07:27.723Z	278.069° WNW	32.478°	2026-06-23 03:10:27.723Z	331.398° NNW

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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 EXCITE, 43819 on other resources

View EXCITE, 43819 on NASA - NSSDCA Website

View EXCITE, 43819 on Heavens-Above

View EXCITE, 43819 on Keep Track

View EXCITE, 43819 on Celestrak

View EXCITE, 43819 on Gunter's Space Page

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

EXCITE, 43819

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-19T16:03:08.005Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

EXCITE Visibility forecast

Co-orbital & Co-planar RSOs

Check out EXCITE, 43819 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago