Anteros is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified Anteros 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.
Anteros orbits the sun every 625 days (1.71 years), coming as close as 1.06 AU and reaching as far as 1.80 AU from the sun. Anteros is about 2.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.
The rotation of Anteros has been observed. It completes a rotation on its axis every 2.87 days.
Anteros's orbit is 0.06 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.
Anteros has 8 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|May 30, 2026||19,771,651||7.391|
|May 23, 2038||9,934,884||5.777|
|May 20, 2050||9,518,916||5.451|
|May 14, 2062||14,362,856||5.468|
|June 1, 2115||20,882,857||7.542|
|May 24, 2127||9,734,010||5.751|
|May 20, 2139||10,225,371||5.404|
|May 10, 2151||22,164,401||6.268|
Anteros's orbit is determined by observations dating back to March 10, 1973. It was last officially observed on Jan. 16, 2020. The IAU Minor Planet Center records 3,453 observations used to determine its orbit.
Anteros can be reached with a journey of 370 days. This trajectory would require a delta-v of 11.705 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 13 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for Anteros.
The position of Anteros 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.