CLOSE APPROACHES

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Last update: 2023-10-02 13:54 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
2023-10-02 18:5672793770.04866018.93717*26.624.05.93.630
2023-10-03 20:3863248970.04227916.454700*18.515.721.00.409
2023-10-04 05:2729347860.0196187.6354*29.622.67.74.730
2023-10-04 22:5748256740.03225812.55428*25.520.38.52.774
2023-10-05 03:4860657030.04054715.78026*25.621.95.82.826
2023-10-05 04:0160392160.04037015.71140*24.617.96.32.171
2023-10-07 00:1133962400.0227028.83510*27.822.29.43.982
2023-10-07 01:1535244690.0235609.16940*25.018.58.12.125
2023-10-08 08:3168444240.04575217.80625*25.721.15.92.997
2023-10-08 14:0348001030.03208712.48727*25.621.95.32.529
2023-10-11 13:3511557400.0077263.0079*28.020.18.63.156
2023-10-11 20:3549209350.03289412.80240*24.819.49.62.381
2023-10-12 02:4169692160.04658618.13022*26.022.313.03.628
2023-10-12 16:4851271120.03427313.33823*25.920.86.72.949
2023-10-13 17:0871263670.04763718.539260*20.718.58.60.929
2023-10-15 07:0826077930.0174326.784230*20.915.016.60.388
2023-10-15 23:2574147540.04956519.289130*22.217.86.51.229
2023-10-16 10:3538328240.0256219.97114*27.021.88.33.519
2023-10-17 00:3211734090.0078443.053190*21.313.014.8-0.232
2023-10-18 12:5167378970.04504017.52822*26.022.14.63.000
2023-10-19 00:3529642780.0198157.71116*26.819.69.83.230
2023-10-20 05:1721293000.0142335.5399*27.920.712.93.776
2023-10-22 08:4515989870.0106894.16010*27.820.321.93.610
2023-10-23 15:1058738510.03926415.281150*21.918.215.91.355
2023-10-24 10:4550798710.03395713.215400*19.917.720.00.710
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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
2023-10-01 01:2934951110.0233639.09221*26.119.69.92.978
2023-09-30 13:2523490240.0157026.11170*23.415.99.00.868
2023-09-30 12:1862861740.04202016.35322*26.121.39.73.444
2023-09-30 09:017741520.0051752.01450*24.414.412.60.605
2023-09-30 07:0647567780.03179712.37523*25.920.78.33.031
2023-09-29 05:1540604570.02714210.56326*25.620.29.22.753
2023-09-29 03:1420387520.0136285.30414*27.019.64.62.603
2023-09-28 21:3313659970.0091313.55418*26.518.84.11.865
2023-09-28 14:4013417400.0089693.49018*26.519.611.92.458
2023-09-28 13:3259146290.03953715.38740*25.020.27.72.527
2023-09-28 08:2027704710.0185197.20712*27.420.810.13.594
2023-09-27 19:4514618680.0097723.80321*26.219.117.42.458
2023-09-27 03:2329459460.0196927.66426*25.719.524.02.820
2023-09-26 21:405600160.0037431.4579*28.018.617.02.811
2023-09-26 18:5364023020.04279716.65520*26.220.98.63.492
2023-09-26 13:4443033550.02876611.19540*24.918.910.42.372
2023-09-26 05:3649698050.03322112.92924*25.820.016.83.271
2023-09-26 01:2013127790.0087753.41515*26.917.67.92.480
2023-09-25 20:2621230180.0141925.52324*25.921.54.31.843
2023-09-25 16:49537760.0003590.1401.8*31.531.68.62.365
2023-09-25 00:3329703480.0198567.72722*26.119.721.23.045
2023-09-24 23:283287580.0021980.85518*26.514.311.71.227
2023-09-24 17:2026518080.0177266.89911*27.621.38.03.591
2023-09-24 06:4260065380.04015115.62617*26.620.13.53.071
2023-09-24 04:5220840410.0139315.42219*26.419.520.52.911
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