2017 SG14

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 2017 SG14

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 12,835,874 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2017 SG14 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2017 SG14 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2017 SG14 orbits the sun every 527 days (1.44 years), coming as close as 0.98 AU and reaching as far as 1.57 AU from the sun. Based on its brightness and the way it reflects light, 2017 SG14 is probably between 0.225 to 0.504 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2017 SG14'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.

2017 SG14 has 10 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
March 20, 2021 12,835,874 25.650
March 18, 2034 6,312,969 25.255
March 16, 2047 8,278,500 25.019
March 13, 2060 17,475,647 24.825
March 11, 2073 29,820,725 24.812
March 23, 2122 18,548,078 25.938
March 20, 2135 8,842,610 25.407
March 18, 2148 6,423,948 25.132
March 16, 2161 12,447,840 24.899
March 14, 2174 23,596,531 24.783

Images and Observations

2017 SG14's orbit is determined by observations dating back to Sept. 24, 2017. It was last officially observed on April 30, 2021. The IAU Minor Planet Center records 295 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 2017 SG14:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.277 AU
  • Eccentricity: 0.2331
  • Inclination: 47.57°
  • Longitude of Ascending Node: 177.2°
  • Argument of Periapsis: 315.3°
  • Mean Anomaly: 285.58°

Physical Characteristics

  • Diameter: ~0.291 km
  • Magnitude: 20.36

Derived Characteristics

  • Orbit Period: 527 days (1.44 years)
  • Avg. Orbit Speed: 26.36 km/s
  • Aphelion Distance: 1.57 AU
  • Perihelion Distance: 0.98 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2017 SG14 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 below comparison is an artistic rendering that uses available data on the diameter of 2017 SG14 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.