614470 (2009 ST19)

Small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 614470 (2009 ST19)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 4,691,767 km of Earth in 2038
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

614470 (2009 ST19) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 ST19 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2009 ST19 orbits the sun every 1,330 days (3.64 years), coming as close as 0.96 AU and reaching as far as 3.77 AU from the sun. Based on its brightness and the way it reflects light, 2009 ST19 is probably between 0.558 to 1.247 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 ST19's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2009 ST19 has 6 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 3, 2038 4,691,767 11.618
July 15, 2049 23,880,262 13.559
Sept. 12, 2089 6,320,411 9.650
Sept. 1, 2129 10,543,754 9.750
July 18, 2169 21,618,503 13.359
Oct. 5, 2198 4,797,027 11.422

Images and Observations

2009 ST19's orbit is determined by observations dating back to Nov. 19, 1998. It was last officially observed on Jan. 6, 2021. The IAU Minor Planet Center records 436 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 ST19:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.361 AU
  • Eccentricity: 0.5949
  • Inclination: 6.73°
  • Longitude of Ascending Node: 0.16°
  • Argument of Periapsis: 336.91°
  • Mean Anomaly: 310.84°

Physical Characteristics

  • Diameter: ~0.720 km
  • Magnitude: 18.39

Derived Characteristics

  • Orbit Period: 1,330 days (3.64 years)
  • Avg. Orbit Speed: 19.31 km/s
  • Aphelion Distance: 3.77 AU
  • Perihelion Distance: 0.96 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 614470 (2009 ST19) 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 ST19 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.