458452 (2011 BR15)

Small Aten-class Asteroid

Near-Earth
Space Reference » Aten-class Asteroids » 458452 (2011 BR15)

Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 29,838,386 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

458452 (2011 BR15) is a small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2011 BR15 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.

2011 BR15 orbits the sun every 298 days (0.82 years), coming as close as 0.63 AU and reaching as far as 1.12 AU from the sun. Based on its brightness and the way it reflects light, 2011 BR15 is probably between 0.193 to 0.865 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.

The rotation of 2011 BR15 has been observed. It completes a rotation on its axis every 6.41 hours.

Close Approaches

2011 BR15's orbit is 0.06 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.

2011 BR15 has 24 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
March 30, 2020 29,838,386 7.129
Nov. 20, 2023 22,046,027 13.382
March 12, 2029 21,111,925 8.723
Nov. 16, 2032 9,070,206 9.937
March 6, 2038 24,435,062 11.668
Nov. 14, 2041 15,672,800 7.484
Nov. 30, 2050 26,583,970 6.405
March 18, 2069 24,164,488 7.459
Nov. 17, 2072 11,963,095 11.023
March 6, 2078 23,672,971 11.396
Nov. 15, 2081 17,317,871 7.213
Nov. 23, 2103 25,807,163 14.149
March 15, 2109 21,879,250 8.149
Nov. 17, 2112 10,498,772 10.547
March 8, 2118 22,984,513 11.153
Nov. 15, 2121 14,358,862 7.768
Dec. 6, 2130 27,786,774 6.433
March 14, 2149 21,091,699 8.592
Nov. 16, 2152 11,677,802 8.393
Nov. 20, 2165 17,240,134 12.227
March 7, 2171 24,996,109 11.871
Dec. 5, 2174 27,587,076 6.349
March 11, 2184 20,644,995 9.441
Nov. 16, 2187 17,092,448 7.268

Images and Observations

2011 BR15's orbit is determined by observations dating back to Feb. 6, 2002. It was last officially observed on Feb. 26, 2020. The IAU Minor Planet Center records 168 observations used to determine its orbit.

Accessibility and Exploration

2011 BR15 can be reached with a journey of 362 days. This trajectory would require a delta-v of 11.935 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 4 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2011 BR15.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2011 BR15:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 0.8734 AU
  • Eccentricity: 0.2769
  • Inclination: 10.23°
  • Longitude of Ascending Node: 216.82°
  • Argument of Periapsis: 72.13°
  • Mean Anomaly: 7.99°

Physical Characteristics

  • Diameter: ~0.529 km
  • Magnitude: 19.77

Derived Characteristics

  • Orbit Period: 298 days (0.82 years)
  • Avg. Orbit Speed: 31.89 km/s
  • Aphelion Distance: 1.12 AU
  • Perihelion Distance: 0.63 AU
  • Rotation Period: 6.41 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 458452 (2011 BR15) 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 2011 BR15 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.