UPSA Object Registry
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111P/Helin-Roman-Crockett

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
1.2 km
Semi-major axis
4.16 au
Eccentricity
0.1096
Inclination
4.23°
Orbital period
8.487 y

Also known as

3 identifiers

111P111P/Helin-Roman-CrockettHelin-Roman-Crockett

Orbit and body

JPL Small-Body Database · solution by Alan B. Chamberlin
ClassETc
Semi-major axis a4.16 au
Eccentricity e0.1096
Inclination i4.23°
Perihelion q / aphelion Q3.704 / 4.62 au
Period3,100 d (8.487 y)
Node Ω / argument ω / M89.79° / 3.38° / 359.69°
Earth MOID2.72 au
Absolute magnitude H—
Diameter1.2 km
Albedo—
Rotation period— h
Spectral type—
Observation arc1989-01-03 → 2012-12-21 · 137 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/111p-helin-roman-crockett · Registry entry updated 2026-08-14.