417949 (2007 TB23)

Small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 417949 (2007 TB23)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 20,549,509 km of Earth in 2038
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

417949 (2007 TB23) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2007 TB23 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2007 TB23 orbits the sun every 518 days (1.42 years), coming as close as 1.01 AU and reaching as far as 1.51 AU from the sun. Based on its brightness and the way it reflects light, 2007 TB23 is probably between 0.475 to 1.062 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

2007 TB23's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2007 TB23 has 9 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 25, 2038 20,549,509 20.830
April 28, 2055 10,525,778 20.573
April 28, 2072 7,550,621 20.528
April 26, 2089 14,785,932 20.664
April 25, 2106 25,768,528 21.048
May 8, 2147 20,838,215 20.884
May 5, 2164 11,857,106 20.616
May 4, 2181 8,612,859 20.557
May 6, 2198 13,225,895 20.653

Images and Observations

2007 TB23's orbit is determined by observations dating back to Oct. 3, 2007. It was last officially observed on April 17, 2021. The IAU Minor Planet Center records 284 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 2007 TB23:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.262 AU
  • Eccentricity: 0.1977
  • Inclination: 38.29°
  • Longitude of Ascending Node: 40.1°
  • Argument of Periapsis: 173.87°
  • Mean Anomaly: 254.95°

Physical Characteristics

  • Diameter: ~0.613 km
  • Magnitude: 18.74

Derived Characteristics

  • Orbit Period: 518 days (1.42 years)
  • Avg. Orbit Speed: 26.50 km/s
  • Aphelion Distance: 1.51 AU
  • Perihelion Distance: 1.01 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 417949 (2007 TB23) 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 2007 TB23 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.