Every month dozens of NEAs come within 0.05 au of Earth. The following table presents the list of these forthcoming and recent close approaches, with details concerning the encounter circumstances.

Among the quantities in the table is the maximum brightness reached by the object at the close approach, useful to estimate its observability during the encounter. Note that when the encounter occurs in daylight the maximum brightness value is incremented by 100 to highlight that the geometry is unfavourable for observations. For a detailed description see the "Definitions and Assumptions" page. Entries are by default sorted by date, but the sorting can be changed by clicking on the table headers.

Last update: 2017-07-27 13:05 UTC
Upcoming close approaches to Earth
1 AU = ~150 million kilometers
1 LD = Lunar Distance = ~384000 kilometers
Distances are computed from the center of the Earth
Object Name Close Approach Date Miss Distance [AU] Miss Distance [LD] Estimated Diameter [m] H [mag] Maximum Brightness [mag] Relative Velocity [km/s]
1989VB 2017-Sep-29 0.0202 7.9 400.0 19.9 14.3 6.3
Recent close approaches to Earth
1 AU = ~150 million kilometers
1 LD = Lunar Distance = ~384000 kilometers
Distances are computed from the center of the Earth
Object Name Close Approach Date Miss Distance [AU] Miss Distance [LD] Estimated Diameter [m] H [mag] Maximum Brightness [mag] Relative Velocity [km/s]
2017OF1 2017-Jul-04 0.0284 11 47.0* 24.7 18.6 6.3
2017OG1 2017-Jul-20 0.0459 17.9 95.0* 23.2 17.9 7.9
2017OO1 2017-Jul-21 0.0009 0.3 53.0* 24.5 11.4 10.4
2017OL1 2017-Jul-23 0.0381 14.8 200.0* 21.6 16.4 12.1
2017OM1 2017-Jul-25 0.0059 2.3 91.0* 23.3 15.6 15.9
*Estimated from the absolute magnitude using