Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 11,326,110 km of Earth in 2039
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2015 TC25 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 TC25 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2015 TC25 orbits the sun every 381 days (1.04 years), coming as close as 0.91 AU and reaching as far as 1.15 AU from the sun. Based on its brightness and the way it reflects light, 2015 TC25 is probably between 0.002 to 0.011 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

The rotation of 2015 TC25 has been observed. It completes a rotation on its axis every 0.04 hours.

Close Approaches

2015 TC25'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.

2015 TC25 has 12 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 6, 2039 11,326,110 5.544
July 31, 2040 20,494,500 2.894
Jan. 21, 2041 14,073,755 2.592
April 29, 2041 14,765,558 2.635
April 1, 2042 21,965,124 7.532
Oct. 1, 2064 21,263,746 7.420
Sept. 2, 2065 16,119,945 2.364
Dec. 6, 2065 13,462,123 2.732
May 27, 2066 19,544,594 3.031
March 29, 2067 12,068,793 5.624
Oct. 9, 2089 2,415,585 3.957
April 2, 2092 10,837,102 5.414

Images and Observations

2015 TC25's orbit is determined by observations dating back to Oct. 11, 2015. It was last officially observed on April 25, 2017. The IAU Minor Planet Center records 48 observations used to determine its orbit.

Accessibility and Exploration

2015 TC25 can be reached with a journey of 362 days. This trajectory would require a delta-v of 4.659 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 763,034 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2015 TC25.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2015 TC25:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.028 AU
  • Eccentricity: 0.1162
  • Inclination: 3.74°
  • Longitude of Ascending Node: 18.86°
  • Argument of Periapsis: 80.57°
  • Mean Anomaly: 145.37°

Physical Characteristics

  • Diameter: ~0.007 km
  • Magnitude: 29.34

Derived Characteristics

  • Orbit Period: 381 days (1.04 years)
  • Avg. Orbit Speed: 29.35 km/s
  • Aphelion Distance: 1.15 AU
  • Perihelion Distance: 0.91 AU
  • Rotation Period: 0.04 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 2015 TC25 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.