Key Facts

  • Categorized as a Interior-Earth Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 27,734,575 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2017 YH is a very small asteroid with an orbit that is entirely confined within Earth's orbit. NASA JPL has classified 2017 YH 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.

2017 YH orbits the sun every 185 days (0.51 years), coming as close as 0.33 AU and reaching as far as 0.94 AU from the sun. Based on its brightness and the way it reflects light, 2017 YH is probably between 0.530 to 1.186 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to the Golden Gate Bridge.

Close Approaches

2017 YH's orbit is 0.12 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.

2017 YH has 21 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 19, 2019 27,734,575 17.057
Jan. 21, 2020 21,516,782 15.385
Jan. 21, 2021 17,811,500 13.876
Jan. 21, 2022 17,969,645 12.660
Jan. 21, 2023 21,690,827 11.854
Jan. 18, 2024 27,297,584 11.605
Jan. 19, 2065 24,722,971 16.282
Jan. 21, 2066 19,338,949 14.667
Jan. 22, 2067 17,261,989 13.253
Jan. 22, 2068 19,359,069 12.194
Jan. 19, 2069 24,364,658 11.654
Jan. 20, 2110 25,163,814 16.417
Jan. 22, 2111 19,581,721 14.759
Jan. 23, 2112 17,197,857 13.358
Jan. 22, 2113 18,971,968 12.270
Jan. 21, 2114 23,864,026 11.661
Jan. 21, 2155 24,913,530 16.352
Jan. 23, 2156 19,258,097 14.684
Jan. 23, 2157 17,074,317 13.228
Jan. 23, 2158 19,323,799 12.176
Jan. 21, 2159 24,484,750 11.661

Images and Observations

2017 YH's orbit is determined by observations dating back to Dec. 5, 2016. It was last officially observed on Jan. 1, 2019. The IAU Minor Planet Center records 46 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 YH:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.634446076413 AU
  • Eccentricity: 0.482474386048
  • Inclination: 19.8335539729°
  • Longitude of Ascending Node: 134.222642527°
  • Argument of Periapsis: 147.454604517°
  • Mean Anomaly: 69.8727273963°

Physical Characteristics

  • Diameter: ~0.685 km
  • Magnitude: 18.5

Derived Characteristics

  • Orbit Period: 185 days (0.51 years)
  • Avg. Orbit Speed: 37.39 km/s
  • Aphelion Distance: 0.94 AU
  • Perihelion Distance: 0.33 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2017 YH 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.