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Celestial object

C/2020 M3 (ATLAS)

2020 M3, ATLAS, C/2020 M3 (ATLAS)

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Reference data

RADate-dependentMoving object · use an ephemeris

DecDate-dependentMoving object · use an ephemeris

Magnitude6.390

Angular size16.2′

Position angle—

Distance—

ConstellationCVn

Solar System catalogue

Moving-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.

JPL SBDB

Primary designation2020 M3

JPL SPK-ID1003699

Orbit classHTC

Orbit IDJPL 22

Near-Earth objectYes

Potentially hazardousNo

Epoch · JD2459179.5

Eccentricity0.952707633632

Semi-major axis26.817194896 AU

Perihelion distance1.268248606 AU

Orbital period50,724.6 days

Earth MOID0.327389000 AU

Jupiter Tisserand1.460000

Inclination23.47352762°

Absolute magnitude · H—

Comet total magnitude · M114.6000 · K1 6.0000

Diameter—

Albedo—

Last catalogue sync2026-09-18 12:30:02

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.9 records

Catalogue identities

COMETC/2020 M3 (ATLAS)NASA/JPL Small-Body DatabaseSource

JPL_SBDBJPL 1003699NASA/JPL Small-Body DatabaseSource

Reference fields

Angular Size Major ArcminOpenNGC via GAVO TAP2026-09-11 06:00:19Source

Canonical NameNASA/JPL Small-Body Database2026-09-11 06:00:06Source

ConstellationOpenNGC via GAVO TAP2026-09-11 06:00:19Source

Dec DegOpenNGC via GAVO TAP2026-09-11 06:00:19Source

MagnitudeOpenNGC via GAVO TAP2026-09-11 06:00:19Source

Ra DegOpenNGC via GAVO TAP2026-09-11 06:00:19Source

Small Body OrbitNASA/JPL Small-Body Database2026-09-11 06:00:06Source

Community observations

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Knowledge library

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Images of this object

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