UPSA Object Registry
Registry · solar system

261P/Larson

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
3.525 au
Eccentricity
0.4183
Inclination
6.05°
Orbital period
6.626 y

Also known as

3 identifiers

261P261P/LarsonLarson

Orbit and body

JPL Small-Body Database · solution by Otto Matic
ClassJFc
Semi-major axis a3.525 au
Eccentricity e0.4183
Inclination i6.05°
Perihelion q / aphelion Q2.051 / 5 au
Period2,420 d (6.626 y)
Node Ω / argument ω / M294.37° / 62.55° / 212.11°
Earth MOID1.05 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc2005-07-03 → 2026-02-13 · 1,333 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/261p-larson · Registry entry updated 2026-08-14.