UPSA Object Registry
Registry · solar system

221P/LINEAR

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.
Semi-major axis
3.473 au
Eccentricity
0.4876
Inclination
11.43°
Orbital period
6.461 y

Also known as

3 identifiers

221P221P/LINEARLINEAR

Orbit and body

JPL Small-Body Database · solution by Otto Matic
ClassJFc
Semi-major axis a3.473 au
Eccentricity e0.4876
Inclination i11.43°
Perihelion q / aphelion Q1.78 / 5.17 au
Period2,360 d (6.461 y)
Node Ω / argument ω / M229.99° / 39.51° / 140.94°
Earth MOID0.781 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc2002-04-14 → 2022-10-23 · 627 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/221p-linear · Registry entry updated 2026-08-14.