Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a football field
- Will pass within 21,336,969 km of Earth in 2061
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2005 WY55 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2005 WY55 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2005 WY55 orbits the sun every 1,440 days (3.94 years), coming as close as 0.70 AU and reaching as far as 4.28 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2005 WY55 is probably between 0.193 to 0.431 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
Close Approaches
2005 WY55'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.
2005 WY55 has 5 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| June 6, 2061 | 21,336,969 | 22.688 |
| May 28, 2065 | 332,745 | 18.601 |
| Jan. 13, 2069 | 20,508,875 | 15.125 |
| May 22, 2100 | 4,514,177 | 16.826 |
| Jan. 3, 2108 | 25,216,958 | 21.101 |
Images and Observations
2005 WY55's orbit is determined by observations dating back to Nov. 26, 2005. It was last officially observed on Nov. 16, 2009. The IAU Minor Planet Center records 135 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 2005 WY55:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.491 AU
- Eccentricity: 0.7192
- Inclination: 7.27°
- Longitude of Ascending Node: 247.99°
- Argument of Periapsis: 286.42°
- Mean Anomaly: 171.68°
Physical Characteristics
- Diameter: ~0.249 km
- Magnitude: 20.7
Derived Characteristics
- Orbit Period: 1,440 days (3.94 years)
- Avg. Orbit Speed: 18.82 km/s
- Aphelion Distance: 4.28 AU
- Perihelion Distance: 0.70 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2005 WY55 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 2005 WY55 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.
