Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 978,090 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


2019 SB9 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 SB9 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 SB9 orbits the sun every 444 days (1.22 years), coming as close as 0.84 AU and reaching as far as 1.44 AU from the sun. Based on its brightness and the way it reflects light, 2019 SB9 is probably between 0.006 to 0.014 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2019 SB9'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.

2019 SB9 has 2 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Sept. 27, 2019 978,090 10.266
April 3, 2024 28,920,789 14.771

Images and Observations

2019 SB9's orbit is determined by observations dating back to Sept. 30, 2019. It was last officially observed on Oct. 1, 2019. The IAU Minor Planet Center records 11 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 SB9:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.139 AU
  • Eccentricity: 0.2641
  • Inclination: 12.07°
  • Longitude of Ascending Node: 5.38°
  • Argument of Periapsis: 280.18°
  • Mean Anomaly: 142.65°

Physical Characteristics

  • Diameter: ~0.008 km
  • Magnitude: 28.1

Derived Characteristics

  • Orbit Period: 444 days (1.22 years)
  • Avg. Orbit Speed: 27.91 km/s
  • Aphelion Distance: 1.44 AU
  • Perihelion Distance: 0.84 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2019 SB9 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.