Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Capitol building
  • Will pass within 3,494,113 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • 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 future 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 0.160 to 0.720 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to the U.S. Capitol building.

Close Approaches

2019 LB's orbit is 0.02 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 LB has 6 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 12, 2019 3,494,113 6.046
June 4, 2049 15,914,663 7.955
June 18, 2062 9,866,343 5.574
May 30, 2079 29,866,194 10.166
June 6, 2109 12,352,789 7.454
June 8, 2182 10,731,962 7.237

Images and Observations

2019 LB's orbit is determined by observations dating back to May 7, 2019. It was last officially observed on June 7, 2019. The IAU Minor Planet Center records 70 observations used to determine its orbit.

Accessibility and Exploration

2019 LB can be reached with a journey of 362 days. This trajectory would require a delta-v of 9.279 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 872 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2019 LB.

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: 1.19277994561 AU
  • Eccentricity: 0.151537356551
  • Inclination: 10.0326193394°
  • Longitude of Ascending Node: 77.5534227086°
  • Argument of Periapsis: 217.62353325°
  • Mean Anomaly: 299.333141138°

Physical Characteristics

  • Diameter: ~0.440 km
  • Magnitude: 25.161

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.