Alamosa is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Alamosa as potentially hazardous because its orbit does not bring it close to Earth.
Alamosa orbits the sun every 1,470 days (4.02 years), coming as close as 2.10 AU and reaching as far as 2.96 AU from the sun. Based on its brightness and the way it reflects light, Alamosa is probably between 9.875 to 22.082 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Cleveland, Ohio.
The rotation of Alamosa has been observed. It completes a rotation on its axis every 4.38 hours.
Alamosa's orbit is 1.10 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
Alamosa's orbit is determined by observations dating back to July 16, 1936. It was last officially observed on June 8, 2023. The IAU Minor Planet Center records 4,116 observations used to determine its orbit.
The position of Alamosa 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.