30825 (1990 TG1)

Mid-sized Apollo-class Asteroid

Near-Earth
Space Reference » Apollo-class Asteroids » 30825 (1990 TG1)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the island of Manhattan
  • Will pass within 27,812,661 km of Earth in 2066
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

30825 (1990 TG1) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 1990 TG1 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.

1990 TG1 orbits the sun every 1,390 days (3.81 years), coming as close as 0.78 AU and reaching as far as 4.10 AU from the sun. Based on its brightness and the way it reflects light, 1990 TG1 is probably between 2.928 to 6.547 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the island of Manhattan.

The rotation of 1990 TG1 has been observed. It completes a rotation on its axis every 2.62 hours.

Close Approaches

1990 TG1's orbit is 0.07 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.

1990 TG1 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
July 2, 2066 27,812,661 13.181
May 29, 2146 16,951,374 9.882
April 9, 2183 15,273,172 14.528

Images and Observations

1990 TG1's orbit is determined by observations dating back to Sept. 16, 1990. It was last officially observed on Jan. 13, 2023. The IAU Minor Planet Center records 1,828 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 1990 TG1:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.436 AU
  • Eccentricity: 0.6811
  • Inclination: 8.74°
  • Longitude of Ascending Node: 205.02°
  • Argument of Periapsis: 33.68°
  • Mean Anomaly: 296.77°

Physical Characteristics

  • Diameter: ~3.780 km
  • Magnitude: 14.79

Derived Characteristics

  • Orbit Period: 1,390 days (3.81 years)
  • Avg. Orbit Speed: 19.07 km/s
  • Aphelion Distance: 4.10 AU
  • Perihelion Distance: 0.78 AU
  • Rotation Period: 2.62 hours

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 30825 (1990 TG1) 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 1990 TG1 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.