Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 9,833,962 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


2019 RH1 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2019 RH1 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.

2019 RH1 orbits the sun every 723 days (1.98 years), coming as close as 1.06 AU and reaching as far as 2.10 AU from the sun. Based on its brightness and the way it reflects light, 2019 RH1 is probably between 0.027 to 0.060 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2019 RH1's orbit is 0.06 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.

2019 RH1 has 1 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 12, 2019 9,833,962 4.008

Images and Observations

2019 RH1's orbit is determined by observations dating back to Sept. 4, 2019. It was last officially observed on Sept. 6, 2019. The IAU Minor Planet Center records 21 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 2019 RH1:



   or view a random object

Orbital Elements

  • Epoch: 2458731.5 JD
  • Semi-major axis: 1.57688193434 AU
  • Eccentricity: 0.330910220556
  • Inclination: 2.12962582273°
  • Longitude of Ascending Node: 186.01353972°
  • Argument of Periapsis: 203.147684378°
  • Mean Anomaly: 336.965774661°

Physical Characteristics

  • Diameter: ~0.035 km
  • Magnitude: 24.971

Derived Characteristics

  • Orbit Period: 723 days (1.98 years)
  • Avg. Orbit Speed: 23.72 km/s
  • Aphelion Distance: 2.10 AU
  • Perihelion Distance: 1.06 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2019 RH1 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.