UPSA Object Registry
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139P/Vaisala-Oterma

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
4.523 au
Eccentricity
0.2476
Inclination
2.33°
Orbital period
9.61 y

Also known as

3 identifiers

139P139P/Vaisala-OtermaVaisala-Oterma

Orbit and body

JPL Small-Body Database · solution by Otto Matic
ClassJFc
Semi-major axis a4.523 au
Eccentricity e0.2476
Inclination i2.33°
Perihelion q / aphelion Q3.403 / 5.64 au
Period3,510 d (9.61 y)
Node Ω / argument ω / M242.35° / 165.81° / 113.32°
Earth MOID2.41 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc1939-10-07 → 2026-08-11 · 569 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/139p-vaisala-oterma · Registry entry updated 2026-08-14.