Astro Corner
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Celestial object
P/2009 Y2 (Kowalski)
2009 Y2, Kowalski, P/2009 Y2 (Kowalski)
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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 designation2009 Y2
JPL SPK-ID1003053
Orbit classJFc
Orbit IDJPL 16
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2455207.5
Eccentricity0.640525555868
Semi-major axis6.507257604 AU
Perihelion distance2.339192810 AU
Orbital period6,063.1 days
Earth MOID1.357140000 AU
Jupiter Tisserand2.288000
Inclination29.92960938°
Absolute magnitude · H—
Comet total magnitude · M16.2000 · K1 28.7500
Diameter—
Albedo—
Last catalogue sync2026-09-18 11:40:02
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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Published Guides that reference this canonical object.
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Images of this object
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