153311 (2001 MG1)

Mid-sized Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 153311 (2001 MG1)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Pentagon
  • Will pass within 10,596,534 km of Earth in 2068
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

153311 (2001 MG1) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2001 MG1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2001 MG1 orbits the sun every 1,450 days (3.97 years), coming as close as 0.89 AU and reaching as far as 4.12 AU from the sun. Based on its brightness and the way it reflects light, 2001 MG1 is probably between 0.880 to 1.968 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. Pentagon.

Close Approaches

2001 MG1's orbit is 0.04 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.

2001 MG1 has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 12, 2068 10,596,534 20.790
Aug. 12, 2111 12,688,958 21.213
Aug. 9, 2150 12,742,331 21.559
Aug. 5, 2193 15,363,452 22.149

Images and Observations

2001 MG1's orbit is determined by observations dating back to July 1, 1989. It was last officially observed on Feb. 21, 2022. The IAU Minor Planet Center records 224 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 2001 MG1:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.501 AU
  • Eccentricity: 0.6461
  • Inclination: 28.41°
  • Longitude of Ascending Node: 142.36°
  • Argument of Periapsis: 218.5°
  • Mean Anomaly: 204.51°

Physical Characteristics

  • Diameter: ~1.136 km
  • Magnitude: 17.4

Derived Characteristics

  • Orbit Period: 1,450 days (3.97 years)
  • Avg. Orbit Speed: 18.76 km/s
  • Aphelion Distance: 4.12 AU
  • Perihelion Distance: 0.89 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 153311 (2001 MG1) 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 2001 MG1 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.