Seleucus is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified Seleucus as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
Seleucus orbits the sun every 1,060 days (2.90 years), coming as close as 1.11 AU and reaching as far as 2.96 AU from the sun. Seleucus is about 2.8 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.
The rotation of Seleucus has been observed. It completes a rotation on its axis every 75.00 hours.
Seleucus's spectral type S (Tholen) / K (SMASSII) indicates that it is likely to contain water, iron, nickel, cobalt, nitrogen, and ammonia.
Seleucus's orbit is 0.10 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.
Seleucus has 2 close approaches predicted in the coming decades:
Date | Distance from Earth (km) | Velocity (km/s) |
---|---|---|
April 13, 2101 | 23,580,399 | 6.877 |
April 30, 2156 | 18,218,766 | 6.122 |
Seleucus's orbit is determined by observations dating back to Feb. 28, 1982. It was last officially observed on July 24, 2023. The IAU Minor Planet Center records 2,206 observations used to determine its orbit.
The position of Seleucus is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.
The above comparison is an artistic rendering that uses available data on the diameter of Seleucus to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.