Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 9,902,497 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

7753 (1988 XB) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 1988 XB as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

1988 XB orbits the sun every 649 days (1.78 years), coming as close as 0.76 AU and reaching as far as 2.17 AU from the sun. Based on its brightness and the way it reflects light, 1988 XB is probably between 0.680 to 1.521 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

1988 XB's spectral type None (Tholen) / B (SMASSII) indicates that it is likely to contain hydrogen, nitrogen, ammonia, and iron.

Close Approaches

1988 XB's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

1988 XB has 20 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 22, 2020 9,902,497 11.515
July 9, 2029 17,170,893 10.292
Nov. 20, 2036 12,552,333 11.001
July 6, 2045 13,214,430 11.005
Nov. 16, 2052 17,021,304 10.242
July 3, 2061 9,476,212 11.720
Nov. 14, 2068 18,879,116 9.994
July 3, 2077 10,167,890 11.578
Nov. 16, 2084 17,334,712 10.194
July 4, 2093 11,426,881 11.332
Nov. 17, 2100 17,384,602 10.200
July 4, 2109 8,888,823 11.827
Nov. 11, 2116 21,234,001 9.775
June 30, 2125 4,303,079 12.913
Nov. 2, 2132 25,724,674 9.763
June 28, 2141 3,717,194 13.755
Dec. 7, 2171 13,112,088 16.087
Aug. 1, 2180 28,453,820 9.862
Nov. 27, 2187 7,624,837 11.933
June 29, 2196 3,470,009 13.427

Images and Observations

1988 XB's orbit is determined by observations dating back to Dec. 5, 1988. It was last officially observed on April 2, 2021. The IAU Minor Planet Center records 1,241 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 1988 XB:

References

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Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 1.467 AU
  • Eccentricity: 0.4816
  • Inclination: 3.12°
  • Longitude of Ascending Node: 73.4°
  • Argument of Periapsis: 280.04°
  • Mean Anomaly: 148.09°

Physical Characteristics

  • Diameter: ~0.878 km
  • Magnitude: 17.96
  • Spectral type (SMASS): B

Derived Characteristics

  • Orbit Period: 649 days (1.78 years)
  • Avg. Orbit Speed: 24.59 km/s
  • Aphelion Distance: 2.17 AU
  • Perihelion Distance: 0.76 AU
  • Approx. Composition: hydrogen, nitrogen, ammonia, and iron.

Map Comparison

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Orbit Simulation

Sky Map

The position of 7753 (1988 XB) 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 1988 XB 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.