499582 (2010 TH19)

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 499582 (2010 TH19)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Capitol building (0.46 km diameter)
  • Will pass within 13,004,262 km of Earth in 2026
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

499582 (2010 TH19) is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2010 TH19 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2010 TH19 orbits the sun every 647 days (1.77 years), coming as close as 1.01 AU and reaching as far as 1.92 AU from the sun. 2010 TH19 is about 0.5 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, comparable in size to the U.S. Capitol building.

Close Approaches

2010 TH19's orbit is 0.04 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.

2010 TH19 has 7 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Dec. 2, 2026 13,004,262 7.038
Dec. 7, 2049 7,629,938 6.035
Jan. 10, 2080 17,282,927 6.216
Dec. 16, 2102 5,543,520 5.336
Dec. 1, 2125 15,497,715 7.516
Dec. 30, 2155 10,759,853 5.216
Dec. 24, 2178 8,091,133 5.108

Images and Observations

2010 TH19's orbit is determined by observations dating back to Oct. 7, 2010. It was last officially observed on May 15, 2020. The IAU Minor Planet Center records 255 observations used to determine its orbit.

Accessibility and Exploration

2010 TH19 can be reached with a journey of 394 days. This trajectory would require a delta-v of 11.995 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 1 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2010 TH19.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2010 TH19:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.464 AU
  • Eccentricity: 0.31
  • Inclination: 6.83°
  • Longitude of Ascending Node: 254.2°
  • Argument of Periapsis: 201.48°
  • Mean Anomaly: 54.85°

Physical Characteristics

  • Diameter: 0.46100 km
  • Magnitude: 20.53
  • Albedo: 0.044

Derived Characteristics

  • Orbit Period: 647 days (1.77 years)
  • Avg. Orbit Speed: 24.62 km/s
  • Aphelion Distance: 1.92 AU
  • Perihelion Distance: 1.01 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 499582 (2010 TH19) 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 2010 TH19 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.