2015 OX78 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 OX78 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.
2015 OX78 orbits the sun every 722 days (1.98 years), coming as close as 0.95 AU and reaching as far as 2.20 AU from the sun. Based on its brightness and the way it reflects light, 2015 OX78 is probably between 0.266 to 0.594 kilometers in diameter, making it small in absolute terms, but larger than 90% of asteroids, very roughly comparable in size to the U.S. Capitol building.
2015 OX78's orbit is 0.13 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.
2015 OX78 has 6 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|Jan. 16, 2020||19,909,011||22.841|
|Jan. 13, 2022||29,438,991||21.542|
|Jan. 20, 2101||27,404,033||24.423|
|Jan. 17, 2103||20,282,587||22.669|
|Jan. 20, 2184||25,885,849||24.180|
|Jan. 16, 2186||20,974,529||22.491|
2015 OX78's orbit is determined by observations dating back to June 28, 2015. It was last officially observed on Feb. 17, 2020. The IAU Minor Planet Center records 297 observations used to determine its orbit.
The position of 2015 OX78 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.