UPSA Object Registry
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128P/Shoemaker-Holt 1

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
4.503 au
Eccentricity
0.3215
Inclination
4.36°
Orbital period
9.555 y

Also known as

3 identifiers

128P128P/Shoemaker-Holt 1Shoemaker-Holt

Orbit and body

JPL Small-Body Database · solution by Davide Farnocchia
ClassJFc
Semi-major axis a4.503 au
Eccentricity e0.3215
Inclination i4.36°
Perihelion q / aphelion Q3.056 / 5.95 au
Period3,490 d (9.555 y)
Node Ω / argument ω / M214.29° / 210.58° / 326.09°
Earth MOID2.07 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc2006-08-22 → 2026-01-31 · 847 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/128p-shoemaker-holt-1 · Registry entry updated 2026-08-14.