Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 24,065,040 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2001 GP2 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2001 GP2 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.

2001 GP2 orbits the sun every 386 days (1.06 years), coming as close as 0.96 AU and reaching as far as 1.11 AU from the sun. Based on its brightness and the way it reflects light, 2001 GP2 is probably between 0.073 to 0.320 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2001 GP2'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.

2001 GP2 has 2 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 4, 2019 24,065,040 7.256
Oct. 1, 2020 2,340,627 2.214

NASA Sentry has assessed impact risk for 23 very close approach scenarios. Here are the top scenarios ordered by probability of impact:

Date Distance from Earth (km) Distance Error (km) Probability of Impact (%) Impact Energy (Mt)
Oct. 7, 2063 3,158.64 ±18.09 0.01342 0.06049
Oct. 5, 2064 1,675.62 ±8.56 0.00239 0.06071
Oct. 5, 2083 4,885.62 ±99.68 0.00110 0.06097
Oct. 4, 2086 5,463.42 ±8.85 0.00093 0.06063
Oct. 6, 2043 4,230.78 ±20.91 0.00055 0.06061
Oct. 6, 2054 3,152.22 ±3.86 0.00051 0.06113
Oct. 5, 2082 2,304.78 ±52.75 0.00035 0.06102
Oct. 4, 2085 2,677.14 ±6.31 0.00034 0.06045
Oct. 6, 2062 4,031.76 ±36.37 0.00032 0.05994
Oct. 1, 2076 3,640.14 ±28.20 0.00023 0.06062
Oct. 6, 2083 269.64 ±16.04 0.00020 0.06001
Oct. 4, 2064 1,425.24 ±8.92 0.00013 0.06116
Oct. 5, 2077 1,913.16 ±17.83 0.00011 0.06061
Oct. 5, 2107 5,970.60 ±4.46 0.00011 0.06041
Sept. 28, 2085 3,768.54 ±0.00 0.00010 0.06068
Oct. 3, 2087 4,834.26 ±21.84 0.00010 0.06063
Oct. 6, 2077 2,754.18 ±43.68 0.00008 0.06033
Oct. 4, 2070 1,187.70 ±0.00 0.00007 0.0612
Oct. 5, 2080 5,893.56 ±44.14 0.00004 0.06001
Sept. 29, 2081 1,778.34 ±0.00 0.00002 0.06101
Oct. 4, 2084 3,755.70 ±0.00 0.00001 0.06041
Oct. 6, 2060 783.24 ±40.14 0.00000 0.05965
Oct. 6, 2062 3,710.76 ±17.58 0.00000 0.0618

Images and Observations

2001 GP2's orbit is determined by observations dating back to April 13, 2001. It was last officially observed on May 10, 2001. The IAU Minor Planet Center records 25 observations used to determine its orbit.

Accessibility and Exploration

2001 GP2 can be reached with a journey of 386 days. This trajectory would require a delta-v of 4.205 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 1,620,205 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2001 GP2.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2001 GP2:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 1.037 AU
  • Eccentricity: 0.0738
  • Inclination: 1.28°
  • Longitude of Ascending Node: 196.71°
  • Argument of Periapsis: 111.26°
  • Mean Anomaly: 298.97°

Physical Characteristics

  • Diameter: ~0.196 km
  • Magnitude: 26.9

Derived Characteristics

  • Orbit Period: 386 days (1.06 years)
  • Avg. Orbit Speed: 29.23 km/s
  • Aphelion Distance: 1.11 AU
  • Perihelion Distance: 0.96 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2001 GP2 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 GP2 to create an approximate landscape rendering. The approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.