Didymos
65803 Didymos (1996 GT)
🚀 Visited by spacecraft⚠️ Potentially hazardous
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 0.78 km
- Rotation period
- 2.2593 hours
- Absolute magnitude H
- 18.11 mag
- Spectral type (SMASS)
- S
Orbit
- Orbit class (JPL)
- APO — Apollo
- Semi-major axis
- 1.64 AU
- Eccentricity
- 0.383
- Inclination
- 3.41°
- Perihelion distance
- 1.01 AU
- Aphelion distance
- 2.27 AU
- Orbital period
- 769 days
- Perihelion passage
- JD 2461412.278
- Earth MOID
- 0.0396 AU
Earth approach
- Potentially hazardous (PHA)
- Yes
- Near-Earth object (NEO)
- Yes
In everyday life
- About 780 m across — 0.2% of the 400 km Seoul–Busan expressway.
- One orbit takes about 769 Earth days (about 2.1 years).
- NASA JPL lists it as a potentially hazardous asteroid — its orbit comes within 5,924,076 km of Earth's (MOID 0.0396 AU).