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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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 26171.24980350 .00000006 00000-0 00000+0 0 9997
2 42801 0.0130 56.6185 0003251 40.0092 263.6515 1.00273622 32879Epoch: 2026-06-20T05:59Z
TLE epoch observation values (Epoch: 2026-06-20T05:59:43.022Z)
Latitude
-0.0126°
Longitude
1.85805°
Altitude
35,787.08 km
Speed
3.075 km/s
True Right ascension
00h 01m 01s
True Declination
0° 00' 45"
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
21:36:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,800.858 km
Perigee altitude
35,773.442 km
Semi-major axis
42,165.287 km
Eccentricity
0.00033
Inclination
0.013°
RAAN
56.6185°
Arg. of periapsis
40.0092°
True anomaly
263.61448°
Mean anomaly
263.6515°
Eccentric anomaly
263.63299°
Mean motion
0.25067 °/min
Orbital period
1,436.12 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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