359369 (2009 YG)

Small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 359369 (2009 YG)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 14,884,156 km of Earth in 2032
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

359369 (2009 YG) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 YG as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2009 YG orbits the sun every 1,150 days (3.15 years), coming as close as 0.65 AU and reaching as far as 3.65 AU from the sun. Based on its brightness and the way it reflects light, 2009 YG is probably between 0.525 to 1.175 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 YG's orbit is 0.01 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 YG has 7 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 22, 2032 14,884,156 22.647
July 1, 2057 21,692,998 15.779
July 20, 2079 20,366,806 23.622
Jan. 26, 2095 3,298,814 20.468
Jan. 24, 2139 14,844,365 22.706
Jan. 24, 2161 9,792,497 22.018
July 25, 2189 25,461,138 24.729

Images and Observations

2009 YG's orbit is determined by observations dating back to Oct. 22, 2006. It was last officially observed on Nov. 14, 2018. The IAU Minor Planet Center records 169 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 YG:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.148 AU
  • Eccentricity: 0.6976
  • Inclination: 3.39°
  • Longitude of Ascending Node: 138.83°
  • Argument of Periapsis: 67.54°
  • Mean Anomaly: 112.53°

Physical Characteristics

  • Diameter: ~0.678 km
  • Magnitude: 18.52

Derived Characteristics

  • Orbit Period: 1,150 days (3.15 years)
  • Avg. Orbit Speed: 20.32 km/s
  • Aphelion Distance: 3.65 AU
  • Perihelion Distance: 0.65 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 359369 (2009 YG) 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 above comparison is an artistic rendering that uses available data on the diameter of 2009 YG to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.