74P/Smirnova-Chernykh
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 4.46 km
Orbit
- Orbit class (JPL)
- ETc — Encke-type Comet
- Semi-major axis
- 4.17 AU
- Eccentricity
- 0.148
- Inclination
- 6.65°
- Perihelion distance
- 3.55 AU
- Aphelion distance
- 4.78 AU
- Orbital period
- 3,100 days
- Perihelion passage
- JD 2455039.287
- Earth MOID
- 2.57 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 4 km across — 1.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 3,100 Earth days (about 8.5 years).
- Sunlight needs about 35 minutes to reach it on average (semi-major axis 4.2 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.