UPSA Object Registry
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31P/Schwassmann-Wachmann 2

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
6.2 km
Semi-major axis
4.243 au
Eccentricity
0.193
Inclination
4.55°
Orbital period
8.734 y

Also known as

3 identifiers

31P31P/Schwassmann-Wachmann 2Schwassmann-Wachmann

Orbit and body

JPL Small-Body Database · solution by Shantanu Naidu
ClassJFc
Semi-major axis a4.243 au
Eccentricity e0.193
Inclination i4.55°
Perihelion q / aphelion Q3.424 / 5.06 au
Period3,190 d (8.734 y)
Node Ω / argument ω / M114.19° / 17.93° / 15.73°
Earth MOID2.44 au
Absolute magnitude H—
Diameter6.2 km
Albedo—
Rotation period— h
Spectral type—
Observation arc2000-11-24 → 2025-10-19 · 1,028 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/31p-schwassmann-wachmann-2 · Registry entry updated 2026-08-14.