Key Facts

Overview

15788 (1993 SB) is a relatively small asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1993 SB as potentially hazardous because its orbit does not bring it close to Earth.

1993 SB orbits the sun every 89,275 days (244.42 years), coming as close as 26.74 AU and reaching as far as 51.44 AU from the sun. Based on its brightness and the way it reflects light, 1993 SB is probably between 69.913 to 156.329 kilometers in diameter, making it larger than most asteroids, very roughly comparable in size to the U.S. state of Delaware.

No Close Approaches

1993 SB's orbit is 25.76 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

1993 SB's orbit is determined by observations dating back to Aug. 15, 1994. It was last officially observed on Dec. 8, 2017. The IAU Minor Planet Center records 36 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 1993 SB:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 39.0918466226 AU
  • Eccentricity: 0.315898397529
  • Inclination: 1.93681693204°
  • Longitude of Ascending Node: 354.739408784°
  • Argument of Periapsis: 79.1961121336°
  • Mean Anomaly: 354.711947977°

Physical Characteristics

  • Diameter: ~90.257 km
  • Magnitude: 7.9

Derived Characteristics

  • Orbit Period: 89,275 days (244.42 years)
  • Avg. Orbit Speed: 4.76 km/s
  • Aphelion Distance: 51.44 AU
  • Perihelion Distance: 26.74 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 15788 (1993 SB) 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.