Astro Corner
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Celestial object
C/1999 N4 (LINEAR)
1999 N4, C/1999 N4 (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 N4
JPL SPK-ID1000269
Orbit classHYP
Orbit IDJPL 43
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2451678.5
Eccentricity1.004200278086
Semi-major axis-1310.567767641 AU
Perihelion distance5.504749075 AU
Orbital period—
Earth MOID4.588590000 AU
Jupiter Tisserand—
Inclination156.92289483°
Absolute magnitude · H—
Comet total magnitude · M17.3000 · K1 8.7500
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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