Key Facts
- Categorized as a Main-belt Asteroid
- Comparable in size to the San Francisco Bay (4.61 km diameter)
- Not a Near Earth Object
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
Nishio is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Nishio as potentially hazardous because its orbit does not bring it close to Earth.
Nishio orbits the sun every 1,690 days (4.63 years), coming as close as 2.40 AU and reaching as far as 3.16 AU from the sun. Nishio is about 4.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.
No Close Approaches
Nishio's orbit is 1.41 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.
Images and Observations
Nishio's orbit is determined by observations dating back to Nov. 30, 1980. It was last officially observed on May 29, 2023. The IAU Minor Planet Center records 3,340 observations used to determine its orbit.
Accessibility and Exploration
This asteroid is not considered a viable target for human exploration by the NHATS study.Similar Objects
These objects have orbits that share similar characteristics to the orbit of Nishio:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.778 AU
- Eccentricity: 0.1371
- Inclination: 5.45°
- Longitude of Ascending Node: 217.55°
- Argument of Periapsis: 190.45°
- Mean Anomaly: 104.29°
Physical Characteristics
- Diameter: 4.61100 km
- Magnitude: 13.26
- Albedo: 0.524
Derived Characteristics
- Orbit Period: 1,690 days (4.63 years)
- Avg. Orbit Speed: 17.88 km/s
- Aphelion Distance: 3.16 AU
- Perihelion Distance: 2.40 AU
Map Comparison
Orbit Simulation
Sky Map
The position of Nishio 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.
Size Rendering
The above comparison is an artistic rendering that uses available data on the diameter of Nishio to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.
