Astro Corner
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Celestial object
51 Nemausa (A858 BA)
51, 51 Nemausa (A858 BA), Nemausa
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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 designation51
JPL SPK-ID20000051
Orbit classMBA
Orbit IDJPL 158
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2461200.5
Eccentricity0.066017046355
Semi-major axis2.365929556 AU
Perihelion distance2.209737875 AU
Orbital period1,329.2 days
Earth MOID1.213950000 AU
Jupiter Tisserand3.525000
Inclination9.97259279°
Absolute magnitude · H7.7200
Diameter138.159000 km
Albedo0.100000
Last catalogue sync2026-09-11 01:40:06
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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