55P/Tempel-Tuttle
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 3.6 km
- Albedo
- 0.06
Orbit
- Orbit class (JPL)
- HTC — Halley-type Comet*
- Semi-major axis
- 10.3 AU
- Eccentricity
- 0.906
- Inclination
- 162°
- Perihelion distance
- 0.976 AU
- Aphelion distance
- 19.7 AU
- Orbital period
- 12,100 days
- Perihelion passage
- JD 2450872.598
- Earth MOID
- 0.00848 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- Yes
In everyday life
- About 4 km across — 0.9% of the 400 km Seoul–Busan expressway.
- One orbit takes about 12,100 Earth days (about 33.1 years).
- Sunlight needs about 86 minutes to reach it on average (semi-major axis 10.3 AU) — versus about 8 min 19 s to Earth.