Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the San Francisco Bay (9.12 km diameter)
  • Will pass within 26,550,510 km of Earth in 2046
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

Ivar is a small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified Ivar as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

Ivar orbits the sun every 929 days (2.54 years), coming as close as 1.12 AU and reaching as far as 2.60 AU from the sun. Ivar is about 9.1 kilometers in diameter, making it larger than most asteroids, comparable in size to the San Francisco Bay.

The rotation of Ivar has been observed. It completes a rotation on its axis every 4.80 days.

Ivar's spectral type S (Tholen) / S (SMASSII) indicates that it is likely to contain magnesium silicate and iron silicate.

Close Approaches

Ivar's orbit is 0.11 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.

Ivar has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 6, 2046 26,550,510 7.832
Aug. 3, 2074 21,054,427 6.971
Aug. 6, 2102 23,479,796 7.314
July 21, 2181 24,904,122 6.794

Images and Observations

Ivar's orbit is determined by observations dating back to Sept. 25, 1929. It was last officially observed on Oct. 17, 2019. The IAU Minor Planet Center records 6,642 observations used to determine its orbit.

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

View asteroid Ivar 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 Ivar:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 1.86348149295 AU
  • Eccentricity: 0.396613260159
  • Inclination: 8.45036769068°
  • Longitude of Ascending Node: 133.12217437°
  • Argument of Periapsis: 167.769810157°
  • Mean Anomaly: 101.558008378°

Physical Characteristics

  • Diameter: 9.12000 km
  • Magnitude: 13.2
  • Albedo: 0.15
  • Spectral type (Tholen): S
  • Spectral type (SMASS): S

Derived Characteristics

  • Orbit Period: 929 days (2.54 years)
  • Avg. Orbit Speed: 21.82 km/s
  • Aphelion Distance: 2.60 AU
  • Perihelion Distance: 1.12 AU
  • Rotation Period: 4.80 days
  • Approx. Composition: magnesium silicate and iron silicate.

Size Comparison

Orbit Simulation

Sky Map

The position of Ivar 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.