Astro Corner
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Celestial object
39P/Oterma
39P, 39P/Oterma, Oterma
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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 designation39P
JPL SPK-ID1000177
Orbit classCTc
Orbit IDJPL 24
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2456994.5
Eccentricity0.228412324538
Semi-major axis7.403325118 AU
Perihelion distance5.712314419 AU
Orbital period7,357.6 days
Earth MOID4.718510000 AU
Jupiter Tisserand3.025000
Inclination1.47823700°
Absolute magnitude · H—
Comet total magnitude · M16.8000 · K1 14.7500
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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Published Guides that reference this canonical object.
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Images of this object
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