UPSA Object Registry
Registry · solar system

151P/Helin

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
8.4 km
Semi-major axis
5.807 au
Eccentricity
0.5709
Inclination
4.73°
Orbital period
13.99 y

Also known as

3 identifiers

151P151P/HelinHelin

Orbit and body

JPL Small-Body Database · solution by Otto Matic
ClassJFc
Semi-major axis a5.807 au
Eccentricity e0.5709
Inclination i4.73°
Perihelion q / aphelion Q2.492 / 9.12 au
Period5,110 d (13.99 y)
Node Ω / argument ω / M143.55° / 215.53° / 215.44°
Earth MOID1.49 au
Absolute magnitude H—
Diameter8.4 km
Albedo—
Rotation period— h
Spectral type—
Observation arc1987-08-24 → 2016-01-26 · 420 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/151p-helin · Registry entry updated 2026-08-14.