CLOSE APPROACHES

Last update: 2023-03-30 21:09 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. 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.

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/sCAI
Close Approach Index:
Very frequent event
Frequent event
Infrequent event
Rare event
Very rare event
CAI Index
2023-03-30 01:2672783630.04865318.93440*
Approximate object diameter
24.620.67.92.444
2023-03-30 03:5149476680.03307312.87180*
Approximate object diameter
23.2118.815.41.639
2023-03-30 05:4833314240.0222698.66711*
Approximate object diameter
27.521.15.93.512
2023-03-30 15:4715401340.0102954.00711*
Approximate object diameter
27.619.97.53.079
2023-03-30 18:071653770.0011050.4306*
Approximate object diameter
28.816.78.71.962
2023-03-31 07:0825252380.0168806.56916*
Approximate object diameter
26.721.210.23.064
2023-04-01 12:5733463550.0223698.70515*
Approximate object diameter
26.920.310.83.497
2023-04-01 16:2910506670.0070232.7337*
Approximate object diameter
28.619.82.82.636
2023-04-02 10:5438360270.0256429.97930*
Approximate object diameter
25.219.722.52.720
2023-04-02 12:0963970880.04276216.64215*
Approximate object diameter
26.9123.511.64.078
2023-04-02 18:0663817520.04265916.60219*
Approximate object diameter
26.421.014.23.819
2023-04-03 09:3518705750.0125044.86614*
Approximate object diameter
27.019.310.23.022
2023-04-03 14:5666099420.04418517.19626*
Approximate object diameter
25.7121.911.73.313
2023-04-04 01:3222474620.0150235.84728*
Approximate object diameter
25.518.624.02.450
2023-04-05 21:6057416130.03838014.93720*
Approximate object diameter
26.2120.88.43.370
2023-04-06 02:5541868450.02798710.89250*
Approximate object diameter
24.4120.218.82.189
2023-04-06 12:3962003060.04144616.13050*
Approximate object diameter
24.3120.17.82.100
2023-04-06 13:0136926990.0246849.60630*
Approximate object diameter
25.318.72.61.546
2023-04-06 13:0730051780.0200887.818160*
Approximate object diameter
21.714.915.80.710
2023-04-06 17:5953969080.03607614.04014*
Approximate object diameter
27.021.55.03.471
2023-04-07 15:1756061160.03747514.58450*
Approximate object diameter
24.4118.811.32.298
2023-04-09 06:3340910680.02734710.64340*
Approximate object diameter
24.819.314.12.365
2023-04-10 06:5136301900.0242669.44424*
Approximate object diameter
25.921.49.42.826
2023-04-11 21:2144284340.02960211.52028*
Approximate object diameter
25.519.35.82.481
2023-04-12 18:5912335760.0082463.20921*
Approximate object diameter
26.118.87.61.930
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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/sCAI
Close Approach Index:
Very frequent event
Frequent event
Infrequent event
Rare event
Very rare event
CAI Index
2023-03-29 23:2545479900.03040111.83127*
Approximate object diameter
25.622.22.31.852
2023-03-29 20:5927746710.0185487.21814*
Approximate object diameter
27.0121.38.63.266
2023-03-28 22:2746481110.03107112.09218*
Approximate object diameter
26.519.97.53.278
2023-03-27 17:3365309340.04365716.99090*
Approximate object diameter
22.918.628.21.897
2023-03-27 17:1113840350.0092523.60116*
Approximate object diameter
26.717.512.32.645
2023-03-27 12:3211105640.0074242.88923*
Approximate object diameter
26.017.925.52.157
2023-03-27 11:1412131940.0081103.1568*
Approximate object diameter
28.120.68.73.268
2023-03-27 10:1532598820.0217918.48050*
Approximate object diameter
24.219.49.01.566
2023-03-26 18:1446708110.03122212.15121*
Approximate object diameter
26.220.06.12.984
2023-03-26 08:1841253500.02757610.73212*
Approximate object diameter
27.319.97.93.731
2023-03-26 08:0124665520.0164886.41712*
Approximate object diameter
27.420.48.33.426
2023-03-26 03:378269820.0055282.1518*
Approximate object diameter
28.318.39.73.089
2023-03-25 19:491746440.0011670.45450*
Approximate object diameter
24.310.17.8-0.971
2023-03-25 12:222274330.0015200.5925*
Approximate object diameter
29.117.618.02.644
2023-03-25 09:0263389410.04237316.49150*
Approximate object diameter
24.419.97.72.180
2023-03-25 03:274174390.0027901.0868*
Approximate object diameter
28.316.25.62.235
2023-03-24 19:4441384320.02766410.76630*
Approximate object diameter
25.3120.07.02.415
2023-03-24 18:5273797640.04933119.19827*
Approximate object diameter
25.620.712.63.386
2023-03-24 13:0826691140.0178426.94422*
Approximate object diameter
26.019.312.02.748
2023-03-23 22:5811757650.0078603.05917*
Approximate object diameter
26.517.68.72.234
2023-03-23 20:405521290.0036911.4366*
Approximate object diameter
29.019.11.51.952
2023-03-23 15:3638139610.0254959.92225*
Approximate object diameter
25.7120.314.22.939
2023-03-23 10:2226194400.0175106.81440*
Approximate object diameter
24.518.121.11.883
2023-03-23 09:0418575150.0124174.83215*
Approximate object diameter
26.819.613.43.006
2023-03-23 05:1647479760.03173812.35228*
Approximate object diameter
25.520.410.72.889
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