UPSA Object Registry
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208P/McMillan

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
4.05 au
Eccentricity
0.372
Inclination
4.41°
Orbital period
8.159 y

Also known as

3 identifiers

208P208P/McMillanMcMillan

Orbit and body

JPL Small-Body Database · solution by Otto Matic
ClassJFc
Semi-major axis a4.05 au
Eccentricity e0.372
Inclination i4.41°
Perihelion q / aphelion Q2.543 / 5.56 au
Period2,980 d (8.159 y)
Node Ω / argument ω / M36.43° / 310.6° / 277.39°
Earth MOID1.54 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc2000-09-23 → 2025-02-02 · 402 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/208p-mcmillan · Registry entry updated 2026-08-14.