Tapio

Key Facts

• Categorized as a Main-belt Asteroid
• Comparable in size to the city of Cleveland, Ohio (11.97 km diameter)
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

Tapio is a large asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Tapio as potentially hazardous because its orbit does not bring it close to Earth.

Tapio orbits the sun every 1,270 days (3.48 years), coming as close as 1.74 AU and reaching as far as 2.86 AU from the sun. Tapio is about 12.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Cleveland, Ohio.

The rotation of Tapio has been observed. It completes a rotation on its axis every 25.44 hours.

Tapio's spectral type None (Tholen) / B (SMASSII) indicates that it is likely to contain hydrogen, nitrogen, ammonia, and iron.

No Close Approaches

Tapio's orbit is 0.73 AU from Earth's orbit at its closest point. This means that there is a very 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

Tapio's orbit is determined by observations dating back to Sept. 26, 1941. It was last officially observed on June 5, 2023. The IAU Minor Planet Center records 3,704 observations used to determine its orbit.

Scientists have been able to determine this object's shape:

View asteroid Tapio in 3D.

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 Tapio:

• 18 Melpomene (A852 MA)
• 80 Sappho (A864 JA)
• 428 Monachia (A897 WA)

References

• JPL Small Body Database
• Mission Design
• Sky Finder Chart

Orbit Simulation

Sky Map

The position of Tapio 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.