2007 TH1

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 2007 TH1

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a basketball court
  • Will pass within 23,438,874 km of Earth in 2023
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2007 TH1 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2007 TH1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2007 TH1 orbits the sun every 580 days (1.59 years), coming as close as 0.79 AU and reaching as far as 1.93 AU from the sun. Based on its brightness and the way it reflects light, 2007 TH1 is probably between 0.112 to 0.250 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a basketball court.

Close Approaches

2007 TH1'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.

2007 TH1 has 13 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 22, 2023 23,438,874 13.938
Oct. 5, 2034 3,923,451 16.315
April 20, 2058 20,423,991 15.770
Oct. 4, 2069 2,933,171 16.010
April 21, 2093 21,207,332 14.986
Oct. 9, 2104 11,140,680 17.605
Sept. 25, 2112 26,013,748 12.608
April 19, 2136 24,921,017 17.685
Oct. 5, 2147 4,521,724 15.425
April 19, 2171 26,764,504 18.151
Oct. 15, 2174 27,392,436 20.298
Sept. 29, 2182 18,682,527 13.457
April 24, 2198 23,554,842 14.208

Images and Observations

2007 TH1's orbit is determined by observations dating back to Oct. 5, 2007. It was last officially observed on April 19, 2023. The IAU Minor Planet Center records 99 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 TH1:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.362 AU
  • Eccentricity: 0.4177
  • Inclination: 20.11°
  • Longitude of Ascending Node: 13.69°
  • Argument of Periapsis: 282.39°
  • Mean Anomaly: 47.17°

Physical Characteristics

  • Diameter: ~0.144 km
  • Magnitude: 21.88

Derived Characteristics

  • Orbit Period: 580 days (1.59 years)
  • Avg. Orbit Speed: 25.55 km/s
  • Aphelion Distance: 1.93 AU
  • Perihelion Distance: 0.79 AU

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 2007 TH1 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 2007 TH1 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.