Key Facts
- Categorized as a Aten-class Asteroid
- Comparable in size to a school bus or smaller
- Will pass within 19,384,068 km of Earth in 2025
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
2010 SJ is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2010 SJ 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.
2010 SJ orbits the sun every 323 days (0.88 years), coming as close as 0.77 AU and reaching as far as 1.07 AU from the sun. Based on its brightness and the way it reflects light, 2010 SJ is probably between 0.030 to 0.135 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
Close Approaches
2010 SJ's orbit is 0.05 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.
2010 SJ has 18 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Sept. 4, 2025 | 19,384,068 | 6.532 |
| Oct. 9, 2033 | 12,662,006 | 7.519 |
| Sept. 22, 2048 | 10,549,846 | 6.350 |
| Oct. 13, 2056 | 24,031,871 | 9.440 |
| Aug. 16, 2063 | 27,374,467 | 7.105 |
| Sept. 27, 2071 | 8,709,512 | 6.407 |
| Oct. 13, 2079 | 23,775,598 | 9.396 |
| Aug. 9, 2086 | 29,866,782 | 7.476 |
| Sept. 19, 2094 | 12,109,123 | 6.358 |
| Oct. 12, 2102 | 16,428,705 | 8.107 |
| Sept. 14, 2117 | 15,213,338 | 6.404 |
| Oct. 10, 2125 | 12,990,632 | 7.537 |
| Sept. 7, 2140 | 18,100,647 | 6.508 |
| Oct. 6, 2148 | 9,013,790 | 6.919 |
| Sept. 4, 2163 | 19,825,822 | 6.581 |
| Oct. 8, 2171 | 9,873,032 | 7.036 |
| Sept. 16, 2186 | 14,130,313 | 6.397 |
| Oct. 13, 2194 | 19,782,655 | 8.644 |
Images and Observations
2010 SJ's orbit is determined by observations dating back to Sept. 16, 2010. It was last officially observed on Oct. 6, 2010. The IAU Minor Planet Center records 74 observations used to determine its orbit.
Accessibility and Exploration
2010 SJ can be reached with a journey of 362 days. This trajectory would require a delta-v of 9.238 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 3,497 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2010 SJ.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2010 SJ:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 0.9211 AU
- Eccentricity: 0.1661
- Inclination: 11.3°
- Longitude of Ascending Node: 183.41°
- Argument of Periapsis: 335.69°
- Mean Anomaly: 92.51°
Physical Characteristics
- Diameter: ~0.083 km
- Magnitude: 23.8
Derived Characteristics
- Orbit Period: 323 days (0.88 years)
- Avg. Orbit Speed: 31.02 km/s
- Aphelion Distance: 1.07 AU
- Perihelion Distance: 0.77 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2010 SJ 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 2010 SJ 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.
