Astro Corner
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Celestial object
C/2021 F1 (Lemmon-PANSTARRS)
2021 F1, C/2021 F1 (Lemmon-PANSTARRS), Lemmon-PANSTARRS
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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 F1
JPL SPK-ID1003834
Orbit classCOM
Orbit IDJPL 21
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2459641.5
Eccentricity0.995701340736
Semi-major axis231.571420277 AU
Perihelion distance0.995446631 AU
Orbital period1,287,140.2 days
Earth MOID0.081331600 AU
Jupiter Tisserand-0.346000
Inclination107.32499168°
Absolute magnitude · H—
Comet total magnitude · M112.9000 · K1 10.5000
Diameter—
Albedo—
Last catalogue sync2026-09-18 12:40:02
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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Guides & knowledge
Published Guides that reference this canonical object.
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Images of this object
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