Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a football field
- Will pass within 25,113,434 km of Earth in 2192
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
1999 YD is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 1999 YD as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
1999 YD orbits the sun every 1,410 days (3.86 years), coming as close as 1.00 AU and reaching as far as 3.92 AU from the sun. Based on its brightness and the way it reflects light, 1999 YD is probably between 0.160 to 0.358 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
1999 YD's spectral type None (Tholen) / Sk (SMASSII) indicates that it is likely to contain and .
Close Approaches
1999 YD's orbit is 0.03 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.
1999 YD has 1 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Dec. 4, 2192 | 25,113,434 | 4.343 |
Images and Observations
1999 YD's orbit is determined by observations dating back to Dec. 17, 1999. It was last officially observed on Feb. 26, 2000. The IAU Minor Planet Center records 99 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 1999 YD:References
Search
or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.463 AU
- Eccentricity: 0.5933
- Inclination: 1.38°
- Longitude of Ascending Node: 9.41°
- Argument of Periapsis: 61.77°
- Mean Anomaly: 54.18°
Physical Characteristics
- Diameter: ~0.207 km
- Magnitude: 21.1
- Spectral type (SMASS): Sk
Derived Characteristics
- Orbit Period: 1,410 days (3.86 years)
- Avg. Orbit Speed: 19.00 km/s
- Aphelion Distance: 3.92 AU
- Perihelion Distance: 1.00 AU
- Approx. Composition: and .
Map Comparison
Orbit Simulation
Sky Map
The position of 1999 YD 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 1999 YD 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.
