UPSA Object Registry
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128P/Shoemaker-Holt 1-A

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
4.557 au
Eccentricity
0.3341
Inclination
4.35°
Orbital period
9.719 y

Also known as

3 identifiers

128P-A128P/Shoemaker-Holt 1-AShoemaker-Holt

Orbit and body

JPL Small-Body Database · solution by Davide Farnocchia
ClassJFc
Semi-major axis a4.557 au
Eccentricity e0.3341
Inclination i4.35°
Perihelion q / aphelion Q3.035 / 6.08 au
Period3,550 d (9.719 y)
Node Ω / argument ω / M214.4° / 210.57° / 331.66°
Earth MOID2.05 au
Absolute magnitude H—
Diameter— km
Albedo—
Rotation period— h
Spectral type—
Observation arc1996-09-16 → 1996-12-04 · 15 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-a · Registry entry updated 2026-08-14.