Dinah

Key Facts

• Categorized as a Main-belt Asteroid
• Comparable in size to the island of Manhattan (4.19 km diameter)
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

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

Dinah orbits the sun every 1,300 days (3.56 years), coming as close as 2.21 AU and reaching as far as 2.47 AU from the sun. Dinah is about 4.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the island of Manhattan.

The rotation of Dinah has been observed. It completes a rotation on its axis every 15.17 hours.

No Close Approaches

Dinah's orbit is 1.22 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

Dinah's orbit is determined by observations dating back to Jan. 30, 1987. It was last officially observed on June 23, 2023. The IAU Minor Planet Center records 3,391 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 Dinah:

• 12 Victoria (A850 RA)
• 261 Prymno (A886 UA)
• 282 Clorinde (A889 BA)

References

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

Orbit Simulation

Sky Map

The position of Dinah 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 Dinah 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.