BULGARIASAT-1, 42801
Orbit data source: Space-Track
BULGARIASAT-1, 42801 is a payload satellite owned by Bulgaria Sat (BG) in GEO that was launched on Fri, 23 Jun 2017 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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42801 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
BG / BGRRelated business
Manufacturer
SS/Loral (MDA)
Mission
Operational Commercial Communications
Bus & Motor
SSL-1300, R-4D-15-300
Mass
~4,000 kg wet, ~3,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 15.5 m
Radar Cross Section
40.765 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 BULGARIASAT-1
1 42801U 17038A 26027.64095786 .00000019 00000-0 00000-0 0 9996
2 42801 0.0160 83.3178 0003029 235.4228 40.7993 1.00273254 31420Epoch: 2026-01-27T15:22Z
TLE epoch observation values (Epoch: 2026-01-27T15:22:58.759Z)
Latitude
-0.03276°
Longitude
1.9181°
Altitude
35,776.002 km
Speed
3.075 km/s
True Right ascension
23h 58m 19s
True Declination
0° 01' 58"
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
08:09:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,800.025 km
Perigee altitude
35,774.482 km
Semi-major axis
42,165.391 km
Eccentricity
0.0003
Inclination
0.016°
RAAN
83.3178°
Arg. of periapsis
235.4228°
True anomaly
40.82199°
Mean anomaly
40.7993°
Eccentric anomaly
40.81064°
Mean motion
0.25067 °/min
Orbital period
1,436.13 mins
BSTAR
0
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Other satellites on launch #38 in the year 2017 (2017-06-23 UTC)
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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.BULGARIASAT-1 Visibility
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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. |
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| BULGARIASAT-1 is likely not visible in the next few days. |
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42801 neighbors
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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
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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