Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a football field (0.30 km diameter)
  • Will pass within 21,548,184 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

Hathor is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified Hathor as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

Hathor orbits the sun every 283 days (0.77 years), coming as close as 0.46 AU and reaching as far as 1.22 AU from the sun. Hathor is about 0.3 kilometers in diameter, making it a small to average asteroid, comparable in size to a football field.

The rotation of Hathor has been observed. It completes a rotation on its axis every 3.35 hours.

Hathor's spectral type CSU (Tholen) / Sq (SMASSII) indicates that it is likely to contain and .

Close Approaches

Hathor's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

Hathor has 24 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 13, 2019 21,548,184 10.280
Nov. 1, 2021 24,029,028 10.006
Jan. 17, 2026 15,619,355 13.914
Jan. 13, 2033 29,877,343 18.508
Oct. 23, 2038 17,000,414 16.738
Oct. 21, 2045 3,619,514 12.588
Jan. 13, 2050 21,562,369 10.291
Nov. 2, 2052 25,384,853 9.985
Jan. 16, 2057 17,998,800 15.067
Oct. 25, 2062 27,078,618 18.891
Oct. 21, 2069 981,267 13.202
Jan. 15, 2074 18,979,024 10.877
Oct. 21, 2086 825,453 13.292
Jan. 15, 2091 19,884,591 10.728
Nov. 9, 2093 29,827,319 10.055
Jan. 13, 2098 29,489,326 18.278
Oct. 23, 2103 5,726,693 14.390
Jan. 10, 2108 25,672,334 9.890
Oct. 31, 2110 22,542,718 10.045
Jan. 18, 2115 18,524,026 15.022
Oct. 25, 2120 22,862,735 18.005
Oct. 23, 2127 8,949,923 11.599
Jan. 19, 2132 16,690,708 11.893
Oct. 22, 2144 2,023,690 13.643

Images and Observations

Hathor's orbit is determined by observations dating back to Oct. 25, 1976. It was last officially observed on Jan. 24, 2019. The IAU Minor Planet Center records 454 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 Hathor:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 0.8438 AU
  • Eccentricity: 0.4498
  • Inclination: 5.86°
  • Longitude of Ascending Node: 211.32°
  • Argument of Periapsis: 40.09°
  • Mean Anomaly: 322.34°

Physical Characteristics

  • Diameter: 0.30000 km
  • Magnitude: 20.2
  • Spectral type (Tholen): CSU
  • Spectral type (SMASS): Sq

Derived Characteristics

  • Orbit Period: 283 days (0.77 years)
  • Avg. Orbit Speed: 32.44 km/s
  • Aphelion Distance: 1.22 AU
  • Perihelion Distance: 0.46 AU
  • Rotation Period: 3.35 hours
  • Approx. Composition: and .

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of Hathor 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 below comparison is an artistic rendering that uses available data on the diameter of Hathor to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.