414287 (2008 OB9)

Mid-sized Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 414287 (2008 OB9)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to Mount Everest (1.97 km diameter)
  • Will pass within 7,253,738 km of Earth in 2054
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

414287 (2008 OB9) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2008 OB9 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2008 OB9 orbits the sun every 2,090 days (5.72 years), coming as close as 0.77 AU and reaching as far as 5.64 AU from the sun. Its orbit is highly elliptical. 2008 OB9 is about 2.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.

The rotation of 2008 OB9 has been observed. It completes a rotation on its axis every 42.50 hours.

Close Approaches

2008 OB9's orbit is 0.01 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2008 OB9 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 9, 2054 7,253,738 20.340
Nov. 13, 2154 19,668,550 12.198
Oct. 24, 2185 22,358,044 17.557

Images and Observations

2008 OB9's orbit is determined by observations dating back to July 29, 2008. It was last officially observed on May 13, 2021. The IAU Minor Planet Center records 329 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 2008 OB9:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.204 AU
  • Eccentricity: 0.7594
  • Inclination: 13.5°
  • Longitude of Ascending Node: 202.73°
  • Argument of Periapsis: 238.52°
  • Mean Anomaly: 194.05°

Physical Characteristics

  • Diameter: 1.97400 km
  • Magnitude: 17.73
  • Albedo: 0.038

Derived Characteristics

  • Orbit Period: 2,090 days (5.72 years)
  • Avg. Orbit Speed: 16.68 km/s
  • Aphelion Distance: 5.64 AU
  • Perihelion Distance: 0.77 AU
  • Rotation Period: 42.50 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 414287 (2008 OB9) 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 2008 OB9 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.