The 15 - 34 metre wide asteroid 2017 HB1 will make a close pass on the 15th September 2017
The 15 - 34 metre wide asteroid 2017 HB1 will make a close pass (3.59 LD, 0.00922 AU), travelling at 7.12 km/second, to the Earth-Moon system on the 24th April 2017 @ 09:07 UT ±00:01.
See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
