IXPE, 49954
Orbit data source: Space-Track
IXPE, 49954 is a payload satellite owned by NASA MSFC (US) in LEO that was launched on Thu, 09 Dec 2021 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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49954 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Ball
Mission
Operational Civil Astronomy
Bus & Motor
BCP, Unknown motor
Mass
330 kg wet, 330 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Truss, 2.6 m
Radar Cross Section
2.805 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 IXPE
1 49954U 21121A 26171.41668980 .00008579 00000-0 45370-3 0 9998
2 49954 0.2296 293.4932 0007192 124.1849 157.3401 15.10273055 5456Epoch: 2026-06-20T10:00Z
TLE epoch observation values (Epoch: 2026-06-20T10:00:01.998Z)
Latitude
-0.22619°
Longitude
156.40992°
Altitude
536.813 km
Speed
7.595 km/s
True Right ascension
14h 20m 11s
True Declination
0° 13' 29"
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
21:33:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
546.722 km
Perigee altitude
536.769 km
Semi-major axis
6,919.882 km
Eccentricity
0.00072
Inclination
0.2296°
RAAN
293.4932°
Arg. of periapsis
124.1849°
True anomaly
157.37182°
Mean anomaly
157.3401°
Eccentric anomaly
157.35596°
Mean motion
3.77047 °/min
Orbital period
95.48 mins
BSTAR
0.0004537
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Other satellites on launch #121 in the year 2021 (2021-12-09 UTC)
No other RSOs were in this launch
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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.IXPE 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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| IXPE is likely not visible in the next few days. |
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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