2004 SB1

Very small Apollo-class Asteroid

Near-Earth
Space Reference » Apollo-class Asteroids » 2004 SB1

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 20,587,143 km of Earth in 2024
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2004 SB1 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2004 SB1 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.

2004 SB1 orbits the sun every 468 days (1.28 years), coming as close as 0.61 AU and reaching as far as 1.75 AU from the sun. Based on its brightness and the way it reflects light, 2004 SB1 is probably between 0.206 to 0.461 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2004 SB1's orbit is 0.08 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.

2004 SB1 has 13 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 26, 2024 20,587,143 14.041
Oct. 11, 2045 12,409,607 15.748
May 3, 2056 21,626,589 16.487
Oct. 14, 2077 13,569,830 13.880
Oct. 6, 2086 27,763,877 19.903
April 25, 2097 21,895,392 13.422
Oct. 17, 2109 25,085,363 11.107
Oct. 10, 2118 17,512,593 17.485
May 1, 2129 20,208,727 14.893
Oct. 13, 2150 12,349,902 15.428
May 5, 2161 22,516,285 16.803
Oct. 15, 2182 12,750,524 14.451
May 8, 2193 26,293,107 18.115

Images and Observations

2004 SB1's orbit is determined by observations dating back to Sept. 20, 1995. It was last officially observed on Aug. 5, 2018. The IAU Minor Planet Center records 260 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 2004 SB1:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.179 AU
  • Eccentricity: 0.4816
  • Inclination: 10.34°
  • Longitude of Ascending Node: 354.29°
  • Argument of Periapsis: 128.19°
  • Mean Anomaly: 227.31°

Physical Characteristics

  • Diameter: ~0.266 km
  • Magnitude: 20.55

Derived Characteristics

  • Orbit Period: 468 days (1.28 years)
  • Avg. Orbit Speed: 27.41 km/s
  • Aphelion Distance: 1.75 AU
  • Perihelion Distance: 0.61 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2004 SB1 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 2004 SB1 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.