528804 (2009 BJ58)

Small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 528804 (2009 BJ58)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 6,188,555 km of Earth in 2039
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

528804 (2009 BJ58) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 BJ58 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2009 BJ58 orbits the sun every 919 days (2.52 years), coming as close as 0.53 AU and reaching as far as 3.17 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2009 BJ58 is probably between 0.399 to 0.891 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

Close Approaches

2009 BJ58'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.

2009 BJ58 has 10 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 5, 2039 6,188,555 22.195
Aug. 14, 2044 21,459,073 27.279
Jan. 19, 2072 12,005,663 25.506
Jan. 27, 2077 14,192,618 20.740
Aug. 1, 2112 19,025,062 19.824
Aug. 13, 2117 13,084,272 25.602
Jan. 16, 2140 24,223,669 27.967
Jan. 27, 2145 11,925,667 21.043
Aug. 5, 2180 10,110,900 21.635
Aug. 17, 2185 25,874,461 28.012

Images and Observations

2009 BJ58's orbit is determined by observations dating back to Jan. 29, 2009. It was last officially observed on July 14, 2019. The IAU Minor Planet Center records 115 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 2009 BJ58:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.85 AU
  • Eccentricity: 0.7126
  • Inclination: 13.02°
  • Longitude of Ascending Node: 131.16°
  • Argument of Periapsis: 85.89°
  • Mean Anomaly: 264.8°

Physical Characteristics

  • Diameter: ~0.515 km
  • Magnitude: 19.12

Derived Characteristics

  • Orbit Period: 919 days (2.52 years)
  • Avg. Orbit Speed: 21.90 km/s
  • Aphelion Distance: 3.17 AU
  • Perihelion Distance: 0.53 AU

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 528804 (2009 BJ58) 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.

Size Rendering

The below comparison is an artistic rendering that uses available data on the diameter of 2009 BJ58 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.