UPSA Object Registry
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103P/Hartley 2

Comet
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
1.6 km
Semi-major axis
3.476 au
Eccentricity
0.6936
Inclination
13.6°
Orbital period
6.489 y
Rotation period
18.1 h

Also known as

3 identifiers

103P103P/Hartley 2Hartley

Orbit and body

JPL Small-Body Database · solution by Davide Farnocchia
ClassJFc · near-Earth
Semi-major axis a3.476 au
Eccentricity e0.6936
Inclination i13.6°
Perihelion q / aphelion Q1.065 / 5.89 au
Period2,370 d (6.489 y)
Node Ω / argument ω / M219.74° / 181.32° / 251.78°
Earth MOID0.0732 au
Absolute magnitude H—
Diameter1.6 km
Albedo—
Rotation period18.1 h
Spectral type—
Observation arc2008-05-05 → 2025-04-28 · 8,768 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/103p-hartley-2 · Registry entry updated 2026-08-14.