UPSA Object Registry
Registry · solar system

17P/Holmes

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
3.42 km
Semi-major axis
3.626 au
Eccentricity
0.4302
Inclination
19.07°
Orbital period
6.899 y

Also known as

3 identifiers

17P17P/HolmesHolmes

Orbit and body

JPL Small-Body Database · solution by Davide Farnocchia
ClassJFc
Semi-major axis a3.626 au
Eccentricity e0.4302
Inclination i19.07°
Perihelion q / aphelion Q2.066 / 5.19 au
Period2,520 d (6.899 y)
Node Ω / argument ω / M326.77° / 24.74° / 133.79°
Earth MOID1.07 au
Absolute magnitude H—
Diameter3.42 km
Albedo—
Rotation period— h
Spectral type—
Observation arc2011-01-04 → 2023-01-22 · 2,211 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/17p-holmes · Registry entry updated 2026-08-14.