Astro Corner
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Celestial object
149P/Mueller 4
149P, 149P/Mueller 4, 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 designation149P
JPL SPK-ID1000139
Orbit classJFc
Orbit IDJPL 15
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2456417.5
Eccentricity0.388317991129
Semi-major axis4.326494000 AU
Perihelion distance2.646438541 AU
Orbital period3,287.0 days
Earth MOID1.722140000 AU
Jupiter Tisserand2.662000
Inclination29.75479752°
Absolute magnitude · H—
Comet total magnitude · M115.5000 · K1 4.5000
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
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Images of this object
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