Protogeneia is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Protogeneia as potentially hazardous because its orbit does not bring it close to Earth.
Protogeneia orbits the sun every 2,030 days (5.56 years), coming as close as 3.07 AU and reaching as far as 3.21 AU from the sun. Protogeneia is about 132.9 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Connecticut.
The rotation of Protogeneia has been observed. It completes a rotation on its axis every 7.85 hours.
Protogeneia's spectral type C (Tholen) / C (SMASSII) indicates that it is likely to contain water, iron, nickel, cobalt, nitrogen, and ammonia.
Protogeneia's orbit is 2.06 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.
Protogeneia's orbit is determined by observations dating back to Sept. 25, 1875. It was last officially observed on July 3, 2023. The IAU Minor Planet Center records 5,178 observations used to determine its orbit.
Scientists have been able to determine this object's shape:
View asteroid Protogeneia in 3D.
The position of Protogeneia 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.