CLOSE APPROACHES

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Last update: 2024-03-02 09:16 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
2024-03-03 10:0265393270.04371317.01218 - 40*25.921.913.63.480
2024-03-04 08:1938174760.0255189.9318 - 18*27.621.52.53.022
2024-03-04 10:1626592790.0177766.91824 - 50*25.219.34.81.710
2024-03-04 15:2552539690.03512113.668110 - 240*22.017.312.51.202
2024-03-08 05:4240296610.02693710.48350 - 100*23.817.819.91.818
2024-03-11 07:3735925450.0240159.34640 - 80*24.319.09.91.754
2024-03-12 02:3474238750.04962619.31390 - 200*22.420.311.11.579
2024-03-15 13:4166548350.04448517.31215 - 30*26.321.315.43.813
2024-03-16 01:2166038770.04414417.18060 - 140*23.122.312.11.782
2024-03-18 21:1019941120.0133305.1888 - 18*27.620.515.03.587
2024-03-19 06:1272077320.04818118.751110 - 240*22.019.610.11.388
2024-03-24 10:3347463980.03172812.34823 - 50*25.321.34.42.192
2024-03-25 07:0555781730.03728814.51150 - 110*23.720.38.31.723
2024-03-29 21:0454184070.03622014.09630 - 80*24.518.74.31.701
2024-03-30 01:5844649530.02984611.61540 - 90*24.019.63.81.165
2024-03-30 17:3224646460.0164756.41230 - 70*24.622.72.90.785
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
2024-04-08 13:0170519280.04713918.34540 - 100*23.920.35.51.763
2024-04-09 02:3158135950.03886115.124160 - 400*21.116.46.80.725
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
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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
2024-02-29 20:4256925070.03805214.80980 - 190*22.518.632.51.637
2024-02-29 02:3317461260.0116724.54218 - 40*25.917.76.71.985
2024-02-28 16:2251911190.03470013.50530 - 70*24.719.619.32.579
2024-02-28 11:0658917640.03938415.32715 - 30*26.321.66.03.231
2024-02-27 23:3623693240.0158386.16413 - 28*26.619.57.72.827
2024-02-27 13:3928249830.0188847.34912 - 26*26.818.99.93.220
2024-02-24 18:3147231830.03157312.2878 - 18*27.522.19.44.114
2024-02-23 12:2935574020.0237809.25415 - 30*26.319.84.22.533
2024-02-23 08:5346081000.03080311.98812 - 28*26.721.81.62.239
2024-02-22 18:4848005230.03209012.48828 - 60*24.919.513.52.582
2024-02-22 14:157751600.0051822.01710 - 22*27.218.210.42.367
2024-02-22 08:5440499820.02707210.53622 - 50*25.419.718.82.845
2024-02-22 04:362247010.0015020.58510 - 23*27.015.117.91.388
2024-02-21 15:1818267940.0122114.75216 - 40*26.018.814.02.496
2024-02-21 05:1333423580.0223428.69511 - 24*26.920.57.53.297
2024-02-20 18:4728029540.0187377.2929 - 19*27.421.29.53.599
2024-02-20 14:2024775500.0165616.44510 - 22*27.119.910.23.326
2024-02-19 19:4847915580.03203012.46513 - 29*26.621.19.33.511
2024-02-19 19:204504090.0030111.17215 - 30*26.215.717.11.470
2024-02-19 14:3017599890.0117654.57914 - 30*26.519.115.42.768
2024-02-18 23:2221810150.0145795.67417 - 40*26.020.49.62.448
2024-02-18 15:271716330.0011470.4464 - 10*28.917.011.82.176
2024-02-18 03:3623821110.0159236.19722 - 50*25.418.710.52.207
2024-02-18 01:4229171970.0195007.58940 - 90*24.218.226.11.802
2024-02-17 22:4331378940.0209768.16327 - 60*25.017.212.82.262
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