2015 BG4 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2015 BG4 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.
2015 BG4 orbits the sun every 735 days (2.01 years), coming as close as 1.04 AU and reaching as far as 2.14 AU from the sun. Based on its brightness and the way it reflects light, 2015 BG4 is probably between 0.014 to 0.031 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2015 BG4's orbit is 0.06 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.
2015 BG4 has 10 close approaches predicted in the coming decades:
Date | Distance from Earth (km) | Velocity (km/s) |
---|---|---|
Jan. 24, 2019 | 11,266,367 | 4.188 |
Jan. 31, 2021 | 16,351,835 | 5.555 |
Feb. 7, 2023 | 24,497,292 | 7.409 |
Dec. 27, 2159 | 22,345,536 | 6.811 |
Jan. 3, 2162 | 14,787,206 | 5.024 |
Jan. 11, 2164 | 10,411,893 | 3.862 |
Jan. 17, 2166 | 9,296,718 | 3.554 |
Jan. 23, 2168 | 9,895,652 | 3.797 |
Jan. 30, 2170 | 13,561,381 | 4.805 |
Feb. 7, 2172 | 20,947,851 | 6.588 |
2015 BG4's orbit is determined by observations dating back to Jan. 18, 2015. It was last officially observed on Feb. 11, 2019. The IAU Minor Planet Center records 74 observations used to determine its orbit.
The position of 2015 BG4 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.