2020 YB1

Very small Apollo-class Asteroid

Near-Earth
Space Reference » Apollo-class Asteroids » 2020 YB1

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 3,036,604 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2020 YB1 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2020 YB1 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.

2020 YB1 orbits the sun every 470 days (1.29 years), coming as close as 0.73 AU and reaching as far as 1.63 AU from the sun. Based on its brightness and the way it reflects light, 2020 YB1 is probably between 0.012 to 0.026 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2020 YB1'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.

2020 YB1 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Dec. 23, 2020 3,036,604 12.366
June 14, 2026 14,830,850 9.029
Dec. 24, 2029 785,556 11.697

NASA Sentry has assessed impact risk for 36 very close approach scenarios. Here are the top scenarios ordered by probability of impact:

Date Probability of Impact (%) Impact Energy (Mt)
Dec. 26, 2111 0.00063 0.1326
Dec. 25, 2073 0.00040 0.1334
Dec. 25, 2080 0.00003 0.1328
June 25, 2120 0.00003 0.1318
Dec. 26, 2107 0.00002 0.1339
Dec. 25, 2095 0.00002 0.1327
Dec. 26, 2115 0.00002 0.1327
Dec. 26, 2111 0.00001 0.1333
Dec. 26, 2111 0.00001 0.1329
Dec. 26, 2105 0.00001 0.1332
Dec. 26, 2101 0.00001 0.1328
Dec. 25, 2075 0.00001 0.1328
Dec. 24, 2084 0.00001 0.1328
Dec. 25, 2081 0.00001 0.1337
Dec. 26, 2111 0.00001 0.1328
Dec. 25, 2079 0.00000 0.1334
Dec. 25, 2093 0.00000 0.1324
June 25, 2105 0.00000 0.1333
Dec. 26, 2102 0.00000 0.1325
Dec. 25, 2082 0.00000 0.1336
Dec. 25, 2089 0.00000 0.1332
June 25, 2113 0.00000 0.1327
Dec. 26, 2116 0.00000 0.1326
Dec. 26, 2111 0.00000 0.1326
June 24, 2097 0.00000 0.1322
Dec. 25, 2098 0.00000 0.1325
Dec. 26, 2110 0.00000 0.1341
Dec. 25, 2097 0.00000 0.1331
Dec. 26, 2118 0.00000 0.1324
Dec. 26, 2115 0.00000 0.1324
Dec. 25, 2077 0.00000 0.1334
Dec. 25, 2112 0.00000 0.1326
Dec. 25, 2120 0.00000 0.1328
Dec. 25, 2095 0.00000 0.1328
Dec. 25, 2077 0.00000 0.1329
Dec. 26, 2118 0.00000 0.1326

Images and Observations

2020 YB1's orbit is determined by observations dating back to Dec. 17, 2020. It was last officially observed on Dec. 22, 2020. The IAU Minor Planet Center records 37 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 2020 YB1:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.183 AU
  • Eccentricity: 0.3811
  • Inclination: 7.1°
  • Longitude of Ascending Node: 273.63°
  • Argument of Periapsis: 264.87°
  • Mean Anomaly: 357.16°

Physical Characteristics

  • Diameter: ~0.015 km
  • Magnitude: 26.8

Derived Characteristics

  • Orbit Period: 470 days (1.29 years)
  • Avg. Orbit Speed: 27.38 km/s
  • Aphelion Distance: 1.63 AU
  • Perihelion Distance: 0.73 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2020 YB1 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.