Key Facts

Overview

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

Henrika orbits the sun every 1,630 days (4.46 years), coming as close as 2.16 AU and reaching as far as 3.27 AU from the sun. Henrika is about 22.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.

The rotation of Henrika has been observed. It completes a rotation on its axis every 5.98 hours.

Henrika's spectral type None (Tholen) / C (SMASSII) indicates that it is likely to contain water, iron, nickel, cobalt, nitrogen, and ammonia.

No Close Approaches

Henrika's orbit is 1.15 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

Henrika's orbit is determined by observations dating back to April 3, 1916. It was last officially observed on July 4, 2023. The IAU Minor Planet Center records 5,697 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 Henrika:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.714 AU
  • Eccentricity: 0.205
  • Inclination: 7.1°
  • Longitude of Ascending Node: 230.19°
  • Argument of Periapsis: 36.61°
  • Mean Anomaly: 316.85°

Physical Characteristics

  • Diameter: 22.55600 km
  • Magnitude: 11.81
  • Albedo: 0.166
  • Spectral type (SMASS): C

Derived Characteristics

  • Orbit Period: 1,630 days (4.46 years)
  • Avg. Orbit Speed: 18.11 km/s
  • Aphelion Distance: 3.27 AU
  • Perihelion Distance: 2.16 AU
  • Rotation Period: 5.98 hours
  • Approx. Composition: water, iron, nickel, cobalt, nitrogen, and ammonia.

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of Henrika 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.