2P/Encke
📋 A written introduction is coming — for now this page shows official values only.
NowLIVE
距地球距离
0.9382 AU
140,352,090 km
光传播时间
7m 48s
按光速
日心距离
☉ 1.781 AU
预计星等 (JPL M1·K1)
16.7
大型望远镜·摄影
Computed 2026-11-04 01:33 UTC · planets astronomy-engine (VSOP87) · comets JPL elements (two-body) · NASA JPL Small-Body Database (sbdb.api) 2026-10-24 · Elements epoch 2024-06-01 · two-body approximation (no planetary perturbations)
Physical data
- Diameter
- 4.8 km
- Rotation period
- 11.083 hours
- Albedo
- 0.046
Orbit
- Orbit class (JPL)
- ETc — Encke-type Comet
- Semi-major axis
- 2.22 AU
- Eccentricity
- 0.847
- Inclination
- 11.3°
- Perihelion distance
- 0.34 AU
- Aphelion distance
- 4.1 AU
- Orbital period
- 1,210 days
- Perihelion passage
- JD 2460240.029
- Earth MOID
- 0.166 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- Yes
In everyday life
- About 5 km across — 1.2% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,210 Earth days (about 3.3 years).
- Sunlight needs about 18 minutes to reach it on average (semi-major axis 2.2 AU) — versus about 8 min 19 s to Earth.