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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43819 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NovaWurks
Mission
Operational Defense Technology
Bus & Motor
HISAT, Unknown motor
Mass
~155 kg wet, ~155 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.5 m
Radar Cross Section
1.500 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 EXCITE
1 43819U 18099BP 25339.86366100 .00005493 00000-0 38580-3 0 9992
2 43819 97.4250 21.1020 0017463 294.8701 65.0710 15.05404721382654Epoch: 2025-12-05T20:43Z
TLE epoch observation values (Epoch: 2025-12-05T20:43:40.310Z)
Latitude
-0.00005°
Longitude
-4.7156°
Altitude
548.25 km
Speed
7.591 km/s
True Right ascension
01h 24m 24s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
05:24:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
559.344 km
Perigee altitude
535.156 km
Semi-major axis
6,925.387 km
Eccentricity
0.00175
Inclination
97.425°
RAAN
21.102°
Arg. of periapsis
294.8701°
True anomaly
65.25263°
Mean anomaly
65.071°
Eccentric anomaly
65.1618°
Mean motion
3.76597 °/min
Orbital period
95.59 mins
BSTAR
0.0003858
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Other satellites on launch #99 in the year 2018 (2018-12-03 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.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 | 2025-12-06 14:51:33.701Z | 50.891° ENE | 2025-12-06 14:54:33.701Z | 102.523° ESE | 17.661° | 2025-12-06 14:56:33.701Z | 135.038° SSE |
| 5 mins | 2025-12-06 16:26:33.701Z | 339.563° N | 2025-12-06 16:28:33.701Z | 298.843° NW | 26.301° | 2025-12-06 16:31:33.701Z | 234.419° WSW |
| 6 mins | 2025-12-07 03:10:33.701Z | 184.654° SSW | 2025-12-07 03:12:33.701Z | 237.335° WSW | 40.97° | 2025-12-07 03:16:33.701Z | 340.689° N |
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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