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Celestial object

C/2013 A1 (Siding Spring)

2013 A1, C/2013 A1 (Siding Spring), Siding Spring

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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

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 designation2013 A1

JPL SPK-ID1003228

Orbit classHYP

Orbit IDJPL 105

Near-Earth objectNo

Potentially hazardousNo

Epoch · JD2457480.5

Eccentricity1.000085526301

Semi-major axis-16366.485748558 AU

Perihelion distance1.399764991 AU

Orbital period—

Earth MOID0.383565000 AU

Jupiter Tisserand-0.919000

Inclination129.03291761°

Absolute magnitude · H—

Comet total magnitude · M18.5000 · K1 9.0000

Diameter—

Albedo—

Last catalogue sync2026-09-18 11:50:02

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

Catalogue identities

COMETC/2013 A1 (Siding Spring)NASA/JPL Small-Body DatabaseSource

JPL_SBDBJPL 1003228NASA/JPL Small-Body DatabaseSource

Reference fields

Canonical NameNASA/JPL Small-Body Database2026-09-11 05:20:08Source

Small Body OrbitNASA/JPL Small-Body Database2026-09-11 05:20:08Source

Community observations

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Knowledge library

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Images of this object

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