29P/Schwassmann-Wachmann 1
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 60.4 km
- Albedo
- 0.033
Orbit
- Orbit class (JPL)
- JFc — Jupiter-family Comet
- Semi-major axis
- 6.05 AU
- Eccentricity
- 0.0448
- Inclination
- 9.36°
- Perihelion distance
- 5.78 AU
- Aphelion distance
- 6.32 AU
- Orbital period
- 5,430 days
- Perihelion passage
- JD 2458589.926
- Earth MOID
- 4.78 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 60 km across — 15.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 5,430 Earth days (about 14.9 years).
- Sunlight needs about 50 minutes to reach it on average (semi-major axis 6.1 AU) — versus about 8 min 19 s to Earth.