Astro Corner
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Celestial object
C/2004 S1 (Van Ness)
2004 S1, C/2004 S1 (Van Ness), Van Ness
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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 designation2004 S1
JPL SPK-ID1000512
Orbit classCOM
Orbit IDJPL 20
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2453286.5
Eccentricity0.999994845898
Semi-major axis132276.648551739 AU
Perihelion distance0.681767293 AU
Orbital period17,572,081,184.9 days
Earth MOID0.198511000 AU
Jupiter Tisserand-0.427000
Inclination114.66684098°
Absolute magnitude · H—
Comet total magnitude · M116.0000 · K1 7.5000
Diameter—
Albedo—
Last catalogue sync2026-09-18 08:10:02
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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