Key Facts


15874 (1996 TL66) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1996 TL66 as potentially hazardous because its orbit does not bring it close to Earth.

1996 TL66 orbits the sun every 273,866 days (749.80 years), coming as close as 34.99 AU and reaching as far as 130.08 AU from the sun. Based on its brightness and the way it reflects light, 1996 TL66 is probably between 231.502 to 517.654 kilometers in diameter, making it larger than most asteroids, very roughly comparable in size to the U.S. state of South Carolina.

The rotation of 1996 TL66 has been observed. It completes a rotation on its axis every 12.00 days.

No Close Approaches

1996 TL66's orbit is 34.00 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

1996 TL66's orbit is determined by observations dating back to Oct. 9, 1996. It was last officially observed on Dec. 25, 2017. The IAU Minor Planet Center records 288 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 1996 TL66:



   or view a random object

Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 82.5327299736 AU
  • Eccentricity: 0.576056739333
  • Inclination: 24.0127830464°
  • Longitude of Ascending Node: 217.83137062°
  • Argument of Periapsis: 184.21294676°
  • Mean Anomaly: 8.66416867135°

Physical Characteristics

  • Diameter: ~298.868 km
  • Magnitude: 5.3

Derived Characteristics

  • Orbit Period: 273,866 days (749.80 years)
  • Avg. Orbit Speed: 3.28 km/s
  • Aphelion Distance: 130.08 AU
  • Perihelion Distance: 34.99 AU
  • Rotation Period: 12.00 days

Size Comparison

Orbit Simulation

Sky Map

The position of 15874 (1996 TL66) 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.