CLOSE APPROACHES

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Last update: 2024-03-19 04:53 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
2024-03-19 06:1272075660.04818018.750110 - 240*22.019.610.11.386
2024-03-20 05:3446081440.03080411.98811 - 25*26.921.710.83.739
2024-03-20 14:4344405160.02968311.55219 - 40*25.720.15.82.582
2024-03-20 18:5045769990.03059511.90730 - 70*24.520.711.62.197
2024-03-23 12:5272430880.04841718.843100 - 230*22.118.128.31.690
2024-03-23 20:4256487970.03776014.69529 - 70*24.820.011.82.571
2024-03-24 10:3347463980.03172812.34823 - 50*25.321.34.42.192
2024-03-24 15:3274660160.04990719.42320 - 50*25.621.24.02.701
2024-03-25 07:0555781730.03728814.51150 - 110*23.720.38.31.723
2024-03-27 08:1431427420.0210088.17640 - 80*24.418.010.81.749
2024-03-27 18:1350251780.03359113.07329 - 70*24.820.314.92.560
2024-03-28 06:4638547490.02576710.02829 - 70*24.818.811.42.224
2024-03-28 18:3567993580.04545117.68819 - 40*25.720.45.12.886
2024-03-29 20:0955656130.03720414.47914 - 30*26.421.17.83.415
2024-03-29 21:0454186630.03622214.09630 - 80*24.518.74.31.696
2024-03-30 01:5844649520.02984611.61540 - 100*24.019.53.81.136
2024-03-30 16:5924590140.0164376.39729 - 70*24.823.02.90.943
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 06:3047462380.03172712.34740 - 90*24.119.49.81.887
2024-04-08 13:0170519030.04713918.34540 - 100*24.020.45.51.803
2024-04-09 02:3158135980.03886215.124160 - 400*21.116.46.80.719
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
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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
2024-03-18 21:1019941120.0133305.1888 - 18*27.620.515.03.587
2024-03-18 18:3314865150.0099373.86730 - 80*24.416.612.01.155
2024-03-18 12:5021389110.0142985.56412 - 27*26.718.16.32.651
2024-03-18 08:3613457490.0089963.50123 - 50*25.316.39.91.598
2024-03-17 23:2942311630.02828411.00730 - 70*24.718.78.92.120
2024-03-17 09:121618970.0010820.4219 - 20*27.315.88.31.021
2024-03-16 21:537903120.0052832.0569 - 21*27.317.310.22.442
2024-03-16 16:0222367320.0149525.81915 - 30*26.220.26.22.383
2024-03-16 15:2826728560.0178676.95312 - 26*26.819.67.63.026
2024-03-16 06:2926545120.0177446.90617 - 40*26.019.610.72.679
2024-03-16 01:2466079040.04417117.19060 - 130*23.322.512.11.834
2024-03-16 00:3340210200.02687910.4618 - 17*27.720.24.33.564
2024-03-15 13:4166548350.04448517.31215 - 30*26.321.315.43.813
2024-03-15 03:136226280.0041621.6205 - 10*28.818.26.82.964
2024-03-14 16:1524953700.0166816.49222 - 50*25.417.610.12.240
2024-03-13 17:21262440.0001750.0684 - 8*29.312.18.70.700
2024-03-13 13:0932600290.0217928.48114 - 30*26.419.67.92.965
2024-03-13 07:218794180.0058792.2885 - 12*28.518.97.23.127
2024-03-12 06:5833418720.0223398.69430 - 70*24.618.512.72.020
2024-03-12 02:3474238750.04962619.31390 - 200*22.420.311.11.579
2024-03-12 02:106419700.0042911.67018 - 40*25.916.219.61.567
2024-03-11 16:5411746720.0078523.0566 - 15*28.118.65.22.882
2024-03-11 10:30361670.0002420.0945 - 11*28.726.113.70.832
2024-03-11 07:3735958680.0240379.35530 - 70*24.519.29.91.913
2024-03-11 04:1646711770.03122512.15222 - 50*25.519.915.72.972
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