Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a school bus or smaller
- Will pass within 12,298,793 km of Earth in 2023
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
2009 DO111 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2009 DO111 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.
2009 DO111 orbits the sun every 394 days (1.08 years), coming as close as 0.76 AU and reaching as far as 1.35 AU from the sun. Based on its brightness and the way it reflects light, 2009 DO111 is probably between 0.048 to 0.214 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
The rotation of 2009 DO111 has been observed. It completes a rotation on its axis every 0.05 hours.
Close Approaches
2009 DO111's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.
2009 DO111 has 25 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| March 17, 2023 | 12,298,793 | 11.557 |
| Sept. 27, 2025 | 18,850,099 | 5.473 |
| March 22, 2037 | 7,398,289 | 7.670 |
| Oct. 7, 2039 | 5,977,960 | 10.271 |
| March 18, 2050 | 9,607,959 | 11.046 |
| Oct. 1, 2052 | 9,439,505 | 7.311 |
| March 8, 2064 | 29,036,544 | 5.077 |
| April 26, 2064 | 27,774,949 | 6.178 |
| Oct. 13, 2066 | 25,401,844 | 14.125 |
| March 14, 2077 | 24,635,001 | 14.032 |
| Sept. 2, 2079 | 26,648,321 | 5.958 |
| Oct. 12, 2079 | 27,849,862 | 4.624 |
| March 25, 2091 | 12,624,872 | 6.646 |
| Oct. 8, 2093 | 12,268,484 | 11.519 |
| March 19, 2104 | 8,957,712 | 10.913 |
| Oct. 3, 2106 | 10,482,290 | 7.102 |
| March 27, 2118 | 16,196,330 | 5.927 |
| Oct. 9, 2120 | 8,940,124 | 10.816 |
| March 26, 2132 | 13,890,264 | 6.334 |
| Oct. 8, 2134 | 2,728,214 | 9.448 |
| March 23, 2146 | 336,784 | 9.145 |
| Oct. 13, 2149 | 5,024,272 | 9.907 |
| March 24, 2164 | 5,216,901 | 7.967 |
| Oct. 16, 2167 | 15,628,052 | 12.056 |
| March 28, 2182 | 18,849,922 | 5.303 |
Images and Observations
2009 DO111's orbit is determined by observations dating back to Feb. 22, 2009. It was last officially observed on Nov. 2, 2011. The IAU Minor Planet Center records 271 observations used to determine its orbit.
Accessibility and Exploration
2009 DO111 can be reached with a journey of 394 days. This trajectory would require a delta-v of 10.03 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 11,463 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2009 DO111.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2009 DO111:References
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or view a random objectOrbital Elements
- Epoch: 2460000.5 JD
- Semi-major axis: 1.052 AU
- Eccentricity: 0.2814
- Inclination: 2.98°
- Longitude of Ascending Node: 1.95°
- Argument of Periapsis: 273.48°
- Mean Anomaly: 279.12°
Physical Characteristics
- Diameter: ~0.131 km
- Magnitude: 22.8
Derived Characteristics
- Orbit Period: 394 days (1.08 years)
- Avg. Orbit Speed: 29.05 km/s
- Aphelion Distance: 1.35 AU
- Perihelion Distance: 0.76 AU
- Rotation Period: 0.05 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2009 DO111 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 DO111 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.
