Astro Corner
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Celestial object
C/2021 J1 (Maury-Attard)
2021 J1, C/2021 J1 (Maury-Attard), Maury-Attard
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Reference data
RADate-dependentMoving object · use an ephemeris
DecDate-dependentMoving object · use an ephemeris
Magnitude—
Angular size—
Position angle—
Distance—
Constellation—
Solar System catalogue
JPL SBDBMoving-object reference
Comets and minor planets move against the background sky. Astro Corner therefore keeps their orbital catalogue record separately and does not pretend a single RA/Dec is permanently correct.
Primary designation2021 J1
JPL SPK-ID1003780
Orbit classHTC
Orbit IDJPL 4
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2459331.5
Eccentricity0.934383757356
Semi-major axis26.527482413 AU
Perihelion distance1.740633723 AU
Orbital period49,904.8 days
Earth MOID0.826395000 AU
Jupiter Tisserand0.120000
Inclination92.71932217°
Absolute magnitude · H—
Comet total magnitude · M117.1000 · K1 5.2500
Diameter—
Albedo—
Last catalogue sync2026-09-18 12:30:02
Planning coordinates are intentionally separate.A later Horizons ephemeris layer can calculate the object's apparent position for a specific date, time and observing location. Until then, static-sky tools are hidden for this record rather than showing misleading coordinates.
Open JPL Small-Body Database 
Reference transparencySources & data provenanceSee where catalogue identities and imported reference fields came from.4 records
Community observations
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Images of this object
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