CLOSE APPROACHES

Last update: 2023-03-21 02:44 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
2023-03-21 01:2718610860.0124414.8429*
Approximate object diameter
28.020.413.83.786
2023-03-21 04:2439120990.02615110.17713*
Approximate object diameter
27.2121.75.43.402
2023-03-22 12:4251207820.03423013.32240*
Approximate object diameter
24.919.110.82.558
2023-03-23 04:446826890.0045631.77611*
Approximate object diameter
27.517.710.82.504
2023-03-23 09:0418584660.0124234.83515*
Approximate object diameter
26.919.613.53.037
2023-03-23 10:2126246210.0175456.82850*
Approximate object diameter
24.518.021.11.852
2023-03-23 15:3738144190.0254989.92325*
Approximate object diameter
25.7120.314.22.937
2023-03-23 22:5811745100.0078513.05518*
Approximate object diameter
26.417.58.72.159
2023-03-25 19:501746660.0011680.45460*
Approximate object diameter
24.09.97.8-1.111
2023-03-27 10:1532592710.0217878.47950*
Approximate object diameter
24.2119.49.01.544
2023-03-27 17:3365309340.04365716.99090*
Approximate object diameter
22.918.628.21.897
2023-03-29 20:5927746710.0185487.21814*
Approximate object diameter
27.0121.38.63.266
2023-03-29 23:2545479900.03040111.83127*
Approximate object diameter
25.622.22.31.852
2023-03-30 01:2672882670.04871918.96040*
Approximate object diameter
24.720.77.92.517
2023-03-30 03:5249436140.03304612.86190*
Approximate object diameter
23.1118.715.41.591
2023-03-30 05:4833314240.0222698.66711*
Approximate object diameter
27.521.15.93.512
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
2023-04-06 12:4130102090.0201227.831170*
Approximate object diameter
21.614.815.90.689
2023-04-07 15:1756061160.03747514.58450*
Approximate object diameter
24.4118.811.32.298
2023-04-07 16:3067999290.04545517.69050*
Approximate object diameter
24.4120.88.22.306
2023-04-13 04:4658207580.03890915.14226*
Approximate object diameter
25.7120.88.12.999
2023-04-13 19:0747834840.03197612.444700*
Approximate object diameter
18.515.317.60.112
2023-04-17 11:0630525320.0204057.94113*
Approximate object diameter
27.2123.35.73.217
2023-04-23 03:1370823640.04734318.42513*
Approximate object diameter
27.2124.38.04.141
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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
2023-03-20 09:0917582290.0117534.57420*
Approximate object diameter
26.218.613.22.556
2023-03-19 16:3769082950.04617917.97213*
Approximate object diameter
27.123.211.84.275
2023-03-19 06:343451240.0023070.8985*
Approximate object diameter
29.418.06.22.690
2023-03-18 17:2562299360.04164516.20720*
Approximate object diameter
26.320.96.63.348
2023-03-17 23:5219592220.0130975.09710*
Approximate object diameter
27.820.48.03.458
2023-03-17 16:0541052380.02744210.680140*
Approximate object diameter
22.017.311.70.945
2023-03-17 11:342395640.0016010.62315*
Approximate object diameter
26.814.88.11.011
2023-03-16 18:167028420.0046981.82819*
Approximate object diameter
26.416.715.21.934
2023-03-15 20:5732565650.0217698.47260*
Approximate object diameter
23.717.57.31.198
2023-03-15 18:4513201390.0088253.4349*
Approximate object diameter
27.920.28.93.244
2023-03-15 18:0365667480.04389617.08340*
Approximate object diameter
24.719.19.12.528
2023-03-15 13:067448520.0049791.9388*
Approximate object diameter
28.119.37.02.724
2023-03-15 08:3241831240.02796210.88219*
Approximate object diameter
26.319.93.92.651
2023-03-15 06:3154371260.03634514.14421*
Approximate object diameter
26.120.24.12.776
2023-03-14 15:1739430450.02635810.258180*
Approximate object diameter
21.5116.414.00.858
2023-03-14 12:1239854800.02664110.36817*
Approximate object diameter
26.521.212.33.452
2023-03-14 07:0858365510.03901515.18430*
Approximate object diameter
25.220.315.22.988
2023-03-13 05:2967514960.04513117.56430*
Approximate object diameter
25.420.38.22.969
2023-03-13 01:4914237600.0095173.70411*
Approximate object diameter
27.518.78.42.996
2023-03-12 18:261571320.0010500.4092.8*
Approximate object diameter
30.618.113.52.950
2023-03-12 17:158247230.0055132.14519*
Approximate object diameter
26.316.78.21.766
2023-03-12 15:5870486290.04711718.337270*
Approximate object diameter
20.616.921.71.216
2023-03-11 18:0954487970.03642314.17550*
Approximate object diameter
24.420.18.22.099
2023-03-11 13:444494720.0030051.1694*
Approximate object diameter
29.518.99.03.174
2023-03-11 07:505161870.0034501.34321*
Approximate object diameter
26.115.811.71.392
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