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Celestial object
C/1999 J3 (LINEAR)
1999 J3, C/1999 J3 (LINEAR), LINEAR
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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 designation1999 J3
JPL SPK-ID1000268
Orbit classCOM
Orbit IDJPL 44
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2451429.5
Eccentricity0.999386389947
Semi-major axis1591.905150760 AU
Perihelion distance0.976809003 AU
Orbital period23,199,264.1 days
Earth MOID0.010625400 AU
Jupiter Tisserand-0.244000
Inclination101.65603628°
Absolute magnitude · H—
Comet total magnitude · M111.3000 · K1 13.5000
Diameter—
Albedo—
Last catalogue sync2026-09-18 07:50:02
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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