Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 29,800,592 km of Earth in 2041
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

7474 (1992 TC) is a small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 1992 TC 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.

1992 TC orbits the sun every 716 days (1.96 years), coming as close as 1.11 AU and reaching as far as 2.02 AU from the sun. Based on its brightness and the way it reflects light, 1992 TC is probably between 0.699 to 1.563 kilometers in diameter, making it small in absolute terms, but larger than ~97% of asteroids, very roughly comparable in size to the Golden Gate Bridge.

The rotation of 1992 TC has been observed. It completes a rotation on its axis every 5.54 days.

1992 TC's spectral type None (Tholen) / X (SMASSII) indicates that it is likely to contain nickel, iron, and cobalt.

Close Approaches

1992 TC's orbit is 0.17 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.

1992 TC has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 3, 2041 29,800,592 2.752
Sept. 28, 2088 26,519,141 3.124
Oct. 1, 2137 25,301,981 2.812
Oct. 3, 2186 24,976,702 2.682

Images and Observations

1992 TC's orbit is determined by observations dating back to Aug. 19, 1990. It was last officially observed on June 1, 2019. The IAU Minor Planet Center records 370 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 1992 TC:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 1.566 AU
  • Eccentricity: 0.2921
  • Inclination: 7.09°
  • Longitude of Ascending Node: 88.62°
  • Argument of Periapsis: 275.61°
  • Mean Anomaly: 44.59°

Physical Characteristics

  • Diameter: ~0.903 km
  • Magnitude: 17.9
  • Spectral type (SMASS): X

Derived Characteristics

  • Orbit Period: 716 days (1.96 years)
  • Avg. Orbit Speed: 23.79 km/s
  • Aphelion Distance: 2.02 AU
  • Perihelion Distance: 1.11 AU
  • Rotation Period: 5.54 hours
  • Approx. Composition: nickel, iron, and cobalt.

Map Comparison

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Orbit Simulation

Sky Map

The position of 7474 (1992 TC) 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.