CLOSE APPROACHES

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Last update: 2024-03-28 21:13 UTC

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. 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.

The last column provides an assessment on how often one can expect an object of a given size to pass at a given distance and velocity from the Earth. A colour-coded evaluation is provided indicating whether a given close approach can be considered as very frequent (in blue), frequent (in green), infrequent (in yellow), rare (in orange) or very rare (in red). For example, the close approach to Earth of asteroid (99942) Apophis in 2029 will be a very rare event. The formulation associated to the computation of this close approach index can be found here.

1 au = 149597870.7 km


1 LD = 384399 km


Distances are computed

from the center of the Earth

Go to recent close approaches table

Upcoming close approaches to Earth

Object designationClose approach date in UTCMiss distance in kmMiss distance in auMiss distance in LDDiameter in mH in magMaximum brightness in magRelative velocity in km/sCAICAI Index
2024-03-28 06:4538495290.02573310.01430 - 70*24.718.711.42.197
2024-03-28 09:3461421950.04105815.97917 - 40*26.020.86.63.163
2024-03-28 18:3567993580.04545117.68819 - 40*25.720.45.12.886
2024-03-29 02:4529112020.0194607.57324 - 50*25.218.913.22.326
2024-03-29 17:4112016150.0080323.12623 - 50*25.317.019.21.736
2024-03-29 20:0255605070.03717014.46514 - 30*26.321.17.83.387
2024-03-29 21:0454186630.03622214.09630 - 80*24.518.74.31.696
2024-03-30 01:5844649530.02984611.61540 - 100*23.919.43.81.090
2024-03-30 16:5924598070.0164436.39929 - 70*24.823.02.90.954
2024-04-03 09:1165522200.04379917.04520 - 40*25.624.36.93.004
2024-04-04 00:3333428930.0223468.69610 - 22*27.221.55.73.293
2024-04-04 05:2532014190.0214008.32813 - 30*26.526.48.23.025
2024-04-07 06:3247318950.03163112.31040 - 90*24.119.49.81.866
2024-04-07 18:2761921460.04139216.109100 - 220*22.119.819.81.518
2024-04-08 13:0170519000.04713918.34540 - 100*24.020.45.51.813
2024-04-09 02:3158135980.03886215.124160 - 400*21.116.46.80.715
2024-04-10 14:0945433550.03037011.81922 - 50*25.420.111.92.796
2024-04-13 04:5134646470.0231609.0136 - 13*28.424.87.54.259
2024-04-13 12:1331420070.0210038.17413 - 29*26.627.18.23.076
2024-04-14 10:5512728280.0085083.31110 - 22*27.120.04.92.303
2024-04-14 17:1863711950.04258916.57426 - 60*25.123.114.02.952
2024-04-15 14:0770293210.04698818.287400 - 1000*18.917.914.20.539
2024-04-15 14:4932566880.0217708.472400 - 1000*18.912.616.5-0.063
2024-04-16 17:2770689380.04725318.39014 - 30*26.321.93.22.974
2024-04-18 21:1460548140.04047415.75127 - 60*25.019.919.12.913
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Go to upcoming close approaches table

Recent close approaches to Earth

Object designationClose approach date in UTCMiss distance in kmMiss distance in auMiss distance in LDDiameter in mH in magMaximum brightness in magRelative velocity in km/sCAICAI Index
2024-03-27 18:1950297460.03362213.08529 - 70*24.820.314.92.551
2024-03-27 08:1531402200.0209918.16940 - 80*24.318.010.81.717
2024-03-27 02:597171280.0047941.86624 - 50*25.216.910.11.015
2024-03-25 07:0555781730.03728814.51150 - 110*23.720.38.31.723
2024-03-24 15:4674662380.04990919.42320 - 40*25.621.34.02.728
2024-03-24 10:3347463980.03172812.34823 - 50*25.321.34.42.192
2024-03-23 20:4156451970.03773614.68630 - 70*24.720.011.82.525
2024-03-23 12:5272448410.04842918.847100 - 230*22.118.128.31.688
2024-03-22 17:3010291930.0068802.67716 - 40*26.116.87.51.743
2024-03-21 20:4537908460.0253409.86219 - 40*25.719.66.92.573
2024-03-20 19:5910945190.0073162.8474 - 8*29.319.55.13.486
2024-03-20 18:5045767610.03059411.90630 - 70*24.520.711.62.185
2024-03-20 14:4344398140.02967811.55019 - 40*25.720.15.82.590
2024-03-20 05:3446081440.03080411.98811 - 25*26.921.710.83.739
2024-03-20 01:1822956680.0153465.97213 - 29*26.518.314.83.036
2024-03-19 13:177842130.0052422.04014 - 30*26.317.910.31.822
2024-03-19 06:1272075660.04818018.750110 - 240*22.019.610.11.386
2024-03-18 21:1019941120.0133305.1888 - 18*27.620.515.03.587
2024-03-18 18:3314865310.0099373.86730 - 80*24.416.612.01.159
2024-03-18 12:5021402220.0143075.56812 - 27*26.718.16.42.669
2024-03-18 08:3613457480.0089963.50123 - 50*25.316.39.91.595
2024-03-17 23:2942311630.02828411.00730 - 70*24.718.78.92.120
2024-03-17 23:2115392210.0102894.0046 - 14*28.219.65.03.171
2024-03-17 09:121618970.0010820.4219 - 20*27.315.88.31.021
2024-03-16 21:537898940.0052802.05510 - 23*27.017.110.22.292
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