Astro Corner
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Celestial object
55P/Tempel-Tuttle
55P, 55P/Tempel-Tuttle, Tempel-Tuttle
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Reference data
RADate-dependentMoving object · use an ephemeris
DecDate-dependentMoving object · use an ephemeris
Magnitude—
Angular size—
Position angle—
Distance—
Constellation—
Solar System catalogue
JPL SBDBMoving-object reference
Comets and minor planets move against the background sky. Astro Corner therefore keeps their orbital catalogue record separately and does not pretend a single RA/Dec is permanently correct.
Primary designation55P
JPL SPK-ID1000095
Orbit classHTC
Orbit IDJPL J985/69
Near-Earth objectYes
Potentially hazardousNo
Epoch · JD2451040.5
Eccentricity0.905552720972
Semi-major axis10.338338230 AU
Perihelion distance0.976427915 AU
Orbital period12,141.6 days
Earth MOID0.008480810 AU
Jupiter Tisserand-0.637000
Inclination162.48657538°
Absolute magnitude · H—
Comet total magnitude · M110.0000 · K1 25.0000
Diameter3.600000 km
Albedo0.060000
Last catalogue sync2026-09-18 07:40:03
Planning coordinates are intentionally separate.A later Horizons ephemeris layer can calculate the object's apparent position for a specific date, time and observing location. Until then, static-sky tools are hidden for this record rather than showing misleading coordinates.
Open JPL Small-Body Database 
Reference transparencySources & data provenanceSee where catalogue identities and imported reference fields came from.4 records
Community observations
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Published Guides that reference this canonical object.
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Images of this object
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