9P/Tempel 1
🚀 Visited by spacecraft
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 6 km
- Rotation period
- 40.7 hours
- Albedo
- 0.05
Orbit
- Orbit class (JPL)
- JFc — Jupiter-family Comet
- Semi-major axis
- 3.15 AU
- Eccentricity
- 0.51
- Inclination
- 10.5°
- Perihelion distance
- 1.54 AU
- Aphelion distance
- 4.75 AU
- Orbital period
- 2,040 days
- Perihelion passage
- JD 2457603.071
- Earth MOID
- 0.529 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 6 km across — 1.5% of the 400 km Seoul–Busan expressway.
- One orbit takes about 2,040 Earth days (about 5.6 years).
- Sunlight needs about 26 minutes to reach it on average (semi-major axis 3.2 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.