Larissa is a large asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified Larissa as potentially hazardous because its orbit does not bring it close to Earth.
Larissa orbits the sun every 2,840 days (7.78 years), coming as close as 3.51 AU and reaching as far as 4.34 AU from the sun. Larissa is about 40.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.
The rotation of Larissa has been observed. It completes a rotation on its axis every 6.52 hours.
Larissa's spectral type P (Tholen) / None (SMASSII) indicates that it is likely to contain .
Larissa's orbit is 2.50 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.
Larissa's orbit is determined by observations dating back to Jan. 5, 1930. It was last officially observed on April 17, 2023. The IAU Minor Planet Center records 4,640 observations used to determine its orbit.
The position of Larissa 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.