UPSA Object Registry
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1 Ceres

Dwarf planet
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Diameter
939.4 km
Absolute magnitude H
3.34
Semi-major axis
2.766 au
Eccentricity
0.0797
Inclination
10.59°
Orbital period
4.6 y
Rotation period
9.074 h
Albedo
0.09

Also known as

3 identifiers

1 Ceres (A801 AA)1 CeresCeres

Orbit and body

JPL Small-Body Database · solution by Davide Farnocchia
ClassMBA
Semi-major axis a2.766 au
Eccentricity e0.0797
Inclination i10.59°
Perihelion q / aphelion Q2.545 / 2.99 au
Period1,680 d (4.6 y)
Node Ω / argument ω / M80.25° / 73.29° / 274.42°
Earth MOID1.58 au
Absolute magnitude H3.34
Diameter939.4 km
Albedo0.09
Rotation period9.0742 h
Spectral typeC (Tholen G)
Observation arc1995-01-05 → 2021-01-28 · 1,075 observations

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/1-ceres · Registry entry updated 2026-08-14.