CLOSE APPROACHES

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Last update: 2024-09-21 01:16 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 (Bullet Cyan Circle), frequent (Bullet Green Circle), infrequent (Bullet Yellow Circle), rare (Bullet Orange Circle), or very rare (Bullet Red Circle). For example, the close approach to Earth of asteroid (99942) Apophis in 2029 will be a very rare event (this case will only appear in the list of upcoming close approaches since April 2028). 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
2024-09-21 06:588987480.0060082.33821 - 50*25.616.913.61.556
2024-09-21 12:1944790730.02994111.65227 - 60*24.919.518.02.628
2024-09-24 04:526600650.0044121.7176 - 14*28.120.52.21.818
2024-09-24 17:2973612720.04920719.15030 - 70*24.721.519.12.896
2024-09-25 12:0068065880.04549917.70725 - 60*25.120.06.32.643
2024-09-26 16:4957206440.03824014.88213 - 29*26.620.67.03.490
2024-09-27 01:1961658780.04121616.04020 - 50*25.621.49.83.111
2024-09-27 01:2167146720.04488517.46823 - 50*25.320.99.93.024
2024-09-27 08:3565216160.04359416.96616 - 40*26.121.97.43.354
2024-09-30 07:3151582680.03448113.41919 - 40*25.722.15.52.675
2024-10-01 15:3232135510.0214818.36022 - 50*25.519.57.22.295
2024-10-02 06:1716078160.0107484.18327 - 60*25.017.19.21.499
2024-10-02 14:1269703480.04659418.13319 - 40*25.720.36.93.126
2024-10-03 14:1733304860.0222638.66430 - 70*24.618.720.92.177
2024-10-05 03:1229218900.0195327.60130 - 80*24.416.36.61.448
2024-10-05 11:4358931170.03939315.33110 - 22*27.223.45.23.722
2024-10-05 17:585474280.0036591.4248 - 17*27.719.24.31.890
2024-10-05 21:2169354850.04636118.04240 - 80*24.419.76.32.124
2024-10-07 03:3249080800.03280812.76890 - 200*22.417.58.61.081
2024-10-08 15:1150616940.03383513.16840 - 90*24.019.212.01.983
2024-10-11 15:5422944110.0153375.96917 - 40*26.020.37.62.378
2024-10-12 01:5135610770.0238049.26440019.713.016.60.281
2024-10-12 11:2451640910.03452013.43450 - 110*23.620.215.61.884
2024-10-12 18:5241018820.02741910.67129 - 70*24.819.121.42.465
2024-10-13 09:2667614910.04519817.59030 - 70*24.725.69.92.571
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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
2024-09-20 22:0151205280.03422913.3219 - 21*27.322.47.33.893
2024-09-20 18:3038848590.02596910.1062.4 - 5*30.224.01.13.834
2024-09-20 18:1033028480.0220788.59230 - 80*24.518.32.80.939
2024-09-20 15:4653352940.03566413.88026 - 60*25.021.110.62.653
2024-09-20 15:2572719620.04861018.91860 - 130*23.418.612.81.986
2024-09-20 07:4327784020.0185727.22815 - 30*26.220.911.72.912
2024-09-20 05:2771557450.04783318.61513 - 28*26.621.58.23.809
2024-09-20 01:2458835570.03932915.30630 - 70*24.620.48.92.376
2024-09-19 10:0343292940.02894011.2636 - 14*28.122.95.94.138
2024-09-19 02:0726290720.0175746.83929 - 60*24.818.99.21.832
2024-09-18 12:2832289910.0215848.40030 - 80*24.418.217.41.954
2024-09-18 10:4840837660.02729810.62416 - 40*26.120.813.13.202
2024-09-18 06:2832494260.0217218.453120 - 270*21.716.715.60.768
2024-09-18 03:4263457880.04241916.50813 - 29*26.620.98.63.714
2024-09-17 16:5358055570.03880815.10313 - 29*26.621.38.63.614
2024-09-17 15:3017777390.0118834.62513 - 28*26.621.45.32.332
2024-09-17 10:1710000510.0066852.602210 - 500*20.512.08.9-0.813
2024-09-16 17:3847559860.03179212.37350 - 110*23.719.323.21.930
2024-09-16 10:365242160.0035041.36424 - 50*25.214.56.70.512
2024-09-15 22:2239952840.02670710.39412 - 27*26.722.04.93.007
2024-09-15 17:1225019250.0167246.50915 - 30*26.319.810.52.798
2024-09-15 05:564312500.0028831.1227 - 15*27.917.15.92.036
2024-09-15 04:0819936790.0133275.18618 - 40*25.817.26.62.073
2024-09-14 23:5962582260.04183416.28117 - 40*26.021.19.63.367
2024-09-14 21:0410237780.0068442.6636 - 13*28.318.85.62.967
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