Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a football field
- Will pass within 16,396,729 km of Earth in 2025
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2018 TF3 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2018 TF3 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2018 TF3 orbits the sun every 1,140 days (3.12 years), coming as close as 0.60 AU and reaching as far as 3.66 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2018 TF3 is probably between 0.210 to 0.470 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
The rotation of 2018 TF3 has been observed. It completes a rotation on its axis every 2.35 hours.
Close Approaches
2018 TF3'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.
2018 TF3 has 11 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| May 2, 2025 | 16,396,729 | 23.897 |
| April 21, 2050 | 12,698,480 | 18.232 |
| April 14, 2075 | 24,932,711 | 15.831 |
| Nov. 3, 2096 | 5,090,361 | 21.782 |
| April 22, 2103 | 14,558,537 | 17.962 |
| Nov. 3, 2124 | 10,061,677 | 22.474 |
| April 24, 2131 | 9,083,176 | 18.818 |
| Nov. 18, 2155 | 22,778,538 | 16.403 |
| April 24, 2162 | 11,512,435 | 18.603 |
| Nov. 19, 2186 | 22,240,738 | 16.179 |
| May 7, 2193 | 24,314,986 | 25.224 |
Images and Observations
2018 TF3's orbit is determined by observations dating back to Aug. 21, 2015. It was last officially observed on Sept. 3, 2021. The IAU Minor Planet Center records 411 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 2018 TF3:References
Search
or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.132 AU
- Eccentricity: 0.7171
- Inclination: 6.87°
- Longitude of Ascending Node: 51.56°
- Argument of Periapsis: 76.62°
- Mean Anomaly: 185.64°
Physical Characteristics
- Diameter: ~0.271 km
- Magnitude: 20.51
Derived Characteristics
- Orbit Period: 1,140 days (3.12 years)
- Avg. Orbit Speed: 20.35 km/s
- Aphelion Distance: 3.66 AU
- Perihelion Distance: 0.60 AU
- Rotation Period: 2.35 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2018 TF3 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 2018 TF3 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.
