Key Facts
- Categorized as a Aten-class Asteroid
- Comparable in size to a football field
- Will pass within 7,141,903 km of Earth in 2021
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2021 MK1 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2021 MK1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2021 MK1 orbits the sun every 265 days (0.73 years), coming as close as 0.58 AU and reaching as far as 1.04 AU from the sun. Based on its brightness and the way it reflects light, 2021 MK1 is probably between 0.145 to 0.324 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
Close Approaches
2021 MK1's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is very close to Earth's orbit.
2021 MK1 has 9 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| June 27, 2021 | 7,141,903 | 10.099 |
| July 2, 2029 | 18,442,834 | 10.139 |
| June 24, 2050 | 16,249,285 | 12.202 |
| June 25, 2058 | 4,104,532 | 10.809 |
| June 25, 2066 | 550,341 | 10.577 |
| June 25, 2077 | 2,449,493 | 10.672 |
| June 24, 2088 | 25,089,692 | 13.466 |
| July 4, 2091 | 21,302,743 | 10.224 |
| June 27, 2102 | 1,613,486 | 10.382 |
Images and Observations
2021 MK1's orbit is determined by observations dating back to May 28, 2016. It was last officially observed on Aug. 6, 2021. The IAU Minor Planet Center records 316 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 2021 MK1:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 0.8077 AU
- Eccentricity: 0.2879
- Inclination: 19.24°
- Longitude of Ascending Node: 273.99°
- Argument of Periapsis: 198.99°
- Mean Anomaly: 171.05°
Physical Characteristics
- Diameter: ~0.187 km
- Magnitude: 21.32
Derived Characteristics
- Orbit Period: 265 days (0.73 years)
- Avg. Orbit Speed: 33.16 km/s
- Aphelion Distance: 1.04 AU
- Perihelion Distance: 0.58 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2021 MK1 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 2021 MK1 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.
