2018 JB3 is a mid-sized asteroid with an orbit that is entirely confined within Earth's orbit. NASA JPL has classified 2018 JB3 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
2018 JB3 orbits the sun every 206 days (0.56 years), coming as close as 0.48 AU and reaching as far as 0.88 AU from the sun. Based on its brightness and the way it reflects light, 2018 JB3 is probably between 0.803 to 1.795 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the Golden Gate Bridge.
2018 JB3's orbit is 0.14 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.
2018 JB3 has 15 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| July 4, 2027 | 25,770,718 | 19.980 |
| July 11, 2036 | 24,317,866 | 19.622 |
| July 9, 2049 | 20,678,621 | 19.492 |
| July 6, 2062 | 21,235,164 | 19.615 |
| July 4, 2075 | 25,777,268 | 19.971 |
| July 12, 2084 | 24,335,312 | 19.628 |
| July 9, 2097 | 20,675,497 | 19.500 |
| July 8, 2110 | 21,233,409 | 19.607 |
| July 5, 2123 | 25,743,695 | 19.957 |
| July 13, 2132 | 24,338,246 | 19.637 |
| July 10, 2145 | 20,667,310 | 19.494 |
| July 8, 2158 | 21,207,420 | 19.597 |
| July 5, 2171 | 25,729,606 | 19.962 |
| July 13, 2180 | 24,339,483 | 19.633 |
| July 11, 2193 | 20,679,890 | 19.490 |
2018 JB3's orbit is determined by observations dating back to May 9, 2018. It was last officially observed on July 2, 2019. The IAU Minor Planet Center records 75 observations used to determine its orbit.
The position of 2018 JB3 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.