Key Facts

  • Classified as a Apollo-class Asteroid
  • Comparable in size to a school bus
  • Will pass within 3,496,429 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation


2019 LB is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 LB 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 collision.

2019 LB orbits the sun every 476 days (1.30 years), coming as close as 1.01 AU and reaching as far as 1.37 AU from the sun. Based on its brightness and the way it reflects light, 2019 LB is probably between 0.02 to 0.05 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus.

Close Approaches

2019 LB's orbit is 0.02 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

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

Date Distance from Earth (km) Velocity (km/s)
June 12, 2019 3,496,429 6.051
June 18, 2062 10,642,875 5.559

Images and Observations

2019 LB's orbit is determined by observations dating back to May 7, 2019. It was last officially observed on June 2, 2019. The IAU Minor Planet Center records 52 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 LB:



   or view a random object

Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 1.19298218631 AU
  • Eccentricity: 0.151682091123
  • Inclination: 10.0392798621°
  • Longitude of Ascending Node: 77.553016702°
  • Argument of Periapsis: 217.619374082°
  • Mean Anomaly: 299.353267114°

Physical Characteristics

  • Diameter: ~0.03 km
  • Magnitude: 25.203

Derived Characteristics

  • Orbit Period: 476 days (1.30 years)
  • Avg. Orbit Speed: 27.27 km/s
  • Aphelion Distance: 1.37 AU
  • Perihelion Distance: 1.01 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2019 LB 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.