Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Pentagon (1.32 km diameter)
  • Will pass within 21,312,457 km of Earth in 2068
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation


2004 TG10 is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2004 TG10 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2004 TG10 orbits the sun every 1,220 days (3.34 years), coming as close as 0.31 AU and reaching as far as 4.16 AU from the sun. Its orbit is highly elliptical. 2004 TG10 is about 1.3 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. Pentagon.

Close Approaches

2004 TG10's orbit is 0.02 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.

2004 TG10 has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
July 11, 2068 21,312,457 33.828
Nov. 16, 2111 23,244,187 25.456
Nov. 7, 2148 10,768,551 30.594
Nov. 11, 2198 15,964,398 27.977

Images and Observations

2004 TG10's orbit is determined by observations dating back to Oct. 5, 2004. It was last officially observed on July 24, 2018. The IAU Minor Planet Center records 93 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 2004 TG10:



   or view a random object

Orbital Elements

  • Epoch: 2459600.5 JD
  • Semi-major axis: 2.234 AU
  • Eccentricity: 0.8621
  • Inclination: 4.18°
  • Longitude of Ascending Node: 205.06°
  • Argument of Periapsis: 317.41°
  • Mean Anomaly: 30.58°

Physical Characteristics

  • Diameter: 1.31600 km
  • Magnitude: 19.4
  • Albedo: 0.018

Derived Characteristics

  • Orbit Period: 1,220 days (3.34 years)
  • Avg. Orbit Speed: 19.92 km/s
  • Aphelion Distance: 4.16 AU
  • Perihelion Distance: 0.31 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2004 TG10 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 2004 TG10 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.