UPSA Object Registry
Registry · solar system

109P/Swift-Tuttle

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
26 km
Semi-major axis
26.09 au
Eccentricity
0.9632
Inclination
113.5°
Orbital period
133.3 y

Also known as

3 identifiers

109P109P/Swift-TuttleSwift-Tuttle

Orbit and body

JPL Small-Body Database · solution by M.S.W. Keesey
ClassHTC · near-Earth
Semi-major axis a26.09 au
Eccentricity e0.9632
Inclination i113.45°
Perihelion q / aphelion Q0.96 / 51.22 au
Period48,700 d (133.3 y)
Node Ω / argument ω / M139.38° / 152.98° / 7.63°
Earth MOID0.000892 au
Absolute magnitude H—
Diameter26 km
Albedo—
Rotation period— h
Spectral type—
Observation arc1737-07-08 → 1995-03-29 · 652 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/109p-swift-tuttle · Registry entry updated 2026-08-14.