C/1861 G1 (Thatcher)
📋 A written introduction is coming — for now this page shows official values only.
Orbit
- Orbit class (JPL)
- COM — Comet
- Semi-major axis
- 55.7 AU
- Eccentricity
- 0.983
- Inclination
- 79.8°
- Perihelion distance
- 0.921 AU
- Aphelion distance
- 110 AU
- Orbital period
- 152,000 days
- Perihelion passage
- JD 2400930.390
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- One orbit takes about 152,000 Earth days (about 416.2 years).
- Sunlight needs about 7.7 hours to reach it on average (semi-major axis 55.7 AU) — versus about 8 min 19 s to Earth.
- At its closest it comes 0.9 AU from the Sun — 92.1% of the Earth–Sun distance.