Astro Corner
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Celestial object
42 Isis (A856 KB)
42, 42 Isis (A856 KB), Isis
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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 designation42
JPL SPK-ID20000042
Orbit classMBA
Orbit IDJPL 140
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2461200.5
Eccentricity0.222026686792
Semi-major axis2.444824295 AU
Perihelion distance1.902008057 AU
Orbital period1,396.3 days
Earth MOID0.903991000 AU
Jupiter Tisserand3.450000
Inclination8.50335381°
Absolute magnitude · H7.6900
Diameter110.997000 km
Albedo0.139000
Last catalogue sync2026-09-11 01:40:05
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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