Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a football field
- Will pass within 21,428,694 km of Earth in 2082
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2009 SB is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 SB as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2009 SB orbits the sun every 1,200 days (3.29 years), coming as close as 0.44 AU and reaching as far as 3.98 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2009 SB is probably between 0.202 to 0.451 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
Close Approaches
2009 SB's orbit is 0.02 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.
2009 SB has 3 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| May 20, 2082 | 21,428,694 | 29.697 |
| May 24, 2128 | 26,895,889 | 30.935 |
| Oct. 10, 2180 | 24,582,252 | 30.638 |
Images and Observations
2009 SB's orbit is determined by observations dating back to Sept. 16, 2009. It was last officially observed on Aug. 24, 2022. The IAU Minor Planet Center records 55 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 2009 SB:References
Search
or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.213 AU
- Eccentricity: 0.8004
- Inclination: 5.45°
- Longitude of Ascending Node: 215.08°
- Argument of Periapsis: 271.8°
- Mean Anomaly: 63.19°
Physical Characteristics
- Diameter: ~0.260 km
- Magnitude: 20.6
Derived Characteristics
- Orbit Period: 1,200 days (3.29 years)
- Avg. Orbit Speed: 20.06 km/s
- Aphelion Distance: 3.98 AU
- Perihelion Distance: 0.44 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2009 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.
Size Rendering
The below comparison is an artistic rendering that uses available data on the diameter of 2009 SB 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.
