Astro Corner
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Celestial object
120P/Mueller 1
120P, 120P/Mueller 1, Mueller
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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 designation120P
JPL SPK-ID1000116
Orbit classJFc
Orbit IDJPL 25
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2454349.5
Eccentricity0.336538780579
Semi-major axis4.135678842 AU
Perihelion distance2.743862528 AU
Orbital period3,072.0 days
Earth MOID1.753550000 AU
Jupiter Tisserand2.917000
Inclination8.79119539°
Absolute magnitude · H—
Comet total magnitude · M16.6000 · K1 26.2500
Diameter3.000000 km
Albedo—
Last catalogue sync2026-09-18 07:40:03
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
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