Eva

164 Eva (A876 NA)

Space Reference » Main-belt Asteroids » Eva

Key Facts

Overview

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

Eva orbits the sun every 1,560 days (4.27 years), coming as close as 1.72 AU and reaching as far as 3.54 AU from the sun. Eva is about 100.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Delaware.

The rotation of Eva has been observed. It completes a rotation on its axis every 13.66 hours.

Eva's spectral type CX (Tholen) / X (SMASSII) indicates that it is likely to contain iron, nickel, and cobalt.

No Close Approaches

Eva's orbit is 0.88 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

Eva's orbit is determined by observations dating back to Dec. 1, 1894. It was last officially observed on May 5, 2023. The IAU Minor Planet Center records 4,842 observations used to determine its orbit.

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

View asteroid Eva 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 Eva:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.631 AU
  • Eccentricity: 0.3471
  • Inclination: 24.48°
  • Longitude of Ascending Node: 76.79°
  • Argument of Periapsis: 284.02°
  • Mean Anomaly: 99.78°

Physical Characteristics

  • Diameter: 100.25400 km
  • Magnitude: 8.85
  • Albedo: 0.029
  • Spectral type (Tholen): CX
  • Spectral type (SMASS): X

Derived Characteristics

  • Orbit Period: 1,560 days (4.27 years)
  • Avg. Orbit Speed: 18.35 km/s
  • Aphelion Distance: 3.54 AU
  • Perihelion Distance: 1.72 AU
  • Rotation Period: 13.66 hours
  • Approx. Composition: iron, nickel, and cobalt.

Map Comparison

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Orbit Simulation

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Sky Map

The position of Eva 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.