Toutatis
4179 · A tumbling elongated rock imaged by radar and spacecraft.
Current distance from Earth
545,188,645 km
1418.3 lunar distances · 3.644 AU
Heliocentric orbit · live
Next close approach
2069-Nov-05
Passes 7.7 lunar distances from Earth — about 2,969,321 km, closing at 8.4 km/s.
Orbit class
Apollo
around the Sun
Orbital period
4.05 yr
1479 days
Diameter
2.8 km
about the size of a small mountain
Eccentricity
0.625
orbit shape
Inclination
0.4°
to the ecliptic
Discovered
1989
Visited by Chang’e 2
China’s Chang’e 2 probe flew past Toutatis in 2012.
Frequently asked questions
How close does Toutatis come to Earth?
Its next notable close approach is on 2069-Nov-05, when it passes about 7.7 lunar distances from Earth — roughly 2,969,321 km. Toutatis is currently about 1418 lunar distances away — the live orbit and distance are shown above.
Is Toutatis going to hit Earth?
No impact is predicted. Toutatis is classified as a potentially hazardous asteroid, which means its orbit brings it relatively close to Earth — but classification is about proximity, not an impending collision. Its trajectory is continuously refined as new observations are gathered, and predicted close approaches are calculated decades ahead. Its live position and orbit are shown above.
How big is Toutatis?
Toutatis is estimated at about 2.8 km across — about the size of a small mountain. Size estimates are derived from how bright the asteroid appears and refined by radar and thermal measurements when it passes close to Earth.
What kind of orbit does Toutatis have?
Toutatis is Apollo (Earth-crossing) object. It orbits the Sun once every 4.05 years, on an elliptical path that reaches beyond Earth’s orbit and swings back toward the Sun. The interactive orbit diagram above shows where it is right now.
Has a spacecraft visited Toutatis?
Yes — Chang’e 2. China’s Chang’e 2 probe flew past Toutatis in 2012. Explore more spacecraft and missions.
Can I see Toutatis through a telescope?
Most of the time Toutatis is far too faint to see, but during a close approach it can brighten enough for amateur telescopes, and the largest near-Earth asteroids occasionally reach binocular range. Check the close-approach date above, then plan your night with our sky and space-weather tools.
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