Key Facts
- Categorized as a Aten-class Asteroid
- Comparable in size to a football field
- Will pass within 14,834,191 km of Earth in 2060
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
164202 (2004 EW) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2004 EW as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2004 EW orbits the sun every 359 days (0.98 years), coming as close as 0.71 AU and reaching as far as 1.26 AU from the sun. Based on its brightness and the way it reflects light, 2004 EW is probably between 0.175 to 0.391 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
The rotation of 2004 EW has been observed. It completes a rotation on its axis every 11.10 hours.
Close Approaches
2004 EW'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.
2004 EW has 28 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Feb. 18, 2060 | 14,834,191 | 11.288 |
| Feb. 15, 2061 | 3,542,504 | 8.348 |
| Feb. 19, 2062 | 15,598,340 | 5.915 |
| March 11, 2063 | 26,909,093 | 6.052 |
| July 7, 2070 | 24,581,635 | 4.565 |
| Aug. 3, 2070 | 24,418,075 | 5.001 |
| July 16, 2071 | 13,353,482 | 6.695 |
| July 11, 2072 | 10,731,889 | 9.164 |
| July 7, 2073 | 19,765,848 | 11.702 |
| Feb. 23, 2128 | 26,244,450 | 13.637 |
| Feb. 18, 2129 | 12,391,887 | 10.819 |
| Feb. 16, 2130 | 3,902,788 | 8.093 |
| Feb. 22, 2131 | 16,791,746 | 5.804 |
| March 14, 2132 | 27,996,166 | 6.159 |
| June 25, 2138 | 27,637,967 | 5.071 |
| Aug. 16, 2138 | 27,368,584 | 5.728 |
| July 18, 2139 | 14,619,219 | 6.337 |
| July 12, 2140 | 11,104,388 | 9.303 |
| July 7, 2141 | 23,037,823 | 12.398 |
| Feb. 24, 2184 | 29,831,328 | 14.382 |
| Feb. 19, 2185 | 14,895,662 | 11.338 |
| Feb. 17, 2186 | 3,158,478 | 8.559 |
| Feb. 18, 2187 | 13,325,178 | 6.202 |
| March 7, 2188 | 24,959,708 | 5.885 |
| July 24, 2196 | 21,362,886 | 4.925 |
| July 17, 2197 | 11,894,561 | 7.133 |
| July 13, 2198 | 11,289,540 | 9.451 |
| July 9, 2199 | 20,600,860 | 11.916 |
Images and Observations
2004 EW's orbit is determined by observations dating back to March 13, 2004. It was last officially observed on May 27, 2017. The IAU Minor Planet Center records 427 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 2004 EW:References
Search
or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 0.988 AU
- Eccentricity: 0.2791
- Inclination: 4.67°
- Longitude of Ascending Node: 342.91°
- Argument of Periapsis: 56.19°
- Mean Anomaly: 38.32°
Physical Characteristics
- Diameter: ~0.226 km
- Magnitude: 20.91
Derived Characteristics
- Orbit Period: 359 days (0.98 years)
- Avg. Orbit Speed: 29.94 km/s
- Aphelion Distance: 1.26 AU
- Perihelion Distance: 0.71 AU
- Rotation Period: 11.10 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 164202 (2004 EW) 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 2004 EW 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.
