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OAS > TAM - Table of Asteroids Next Closest Approaches to the Moon

Sormano Astronomical Observatory: TAM
Table of Asteroids Next Closest Approaches to the Moon

Last update: August 21, 2017

Computations: Francesco Manca , Piero Sicoli , Augusto Testa (obs.sormano@alice.it).


This table, sorted by date for the coming years, reports asteroids with nominal Moon-miss distance within 1,5 LD (Lunar Distance) .

The selection obtained among objects approaching the Earth is extrapolated from our technical lists MBPL - Minor Body Priority List and the SAEL - Small Asteroids Encounters List (MBPL include PHAs-Potential Hazardous Asteroids, objects with a diameter more than 240 mt, SAEL takes account of smaller objects diameter less than 240 mt.

A preliminary software ( developed by A. Testa - Sormano Observatory), highlights all the objects for which a close encounter is expected. Successively for each one, a more accurate investigation is computed both for nominal distance and possible error (3-sigma uncertainty confidence level) using OrbFit Software Package ( F.Manca - Sormano Observatory).

Some objects are listed in the risk page at JPL (NASA) and NeoDys (Univ. Of Pisa, Italy) about possible impacts with our planet (see NeoDys Risk page and SENTRY Risk page).

All the distances are computed between the centers of mass of the bodies (Moon and asteroids). In order to refer distances from the lunar surface equatorial Moon radius needs to be taken into account.


.Predicted close encounters with the Moon_
( Lunar-centric distance )

_______Box Colours ______ ________Range of distance ______
_ Equatorial Moon Radii < = 10
10 < Equatorial Moon Radii < = 100 __
- __ Equatorial Moon Radii > _ 100
MONITOR on SPECIAL OBJECTS
Asteroids with interesting future
close encounters with the Moon
(99942) Apophis
This large asteroid of about 325 m in diameter discovered on June 19, 2004 from Kitt Peak
Observatory (see also our internal web page for more details), according with our computations
will pass on April 14, 2029 at a nominal distance of 93476 km from the Moon's surface.

Below diagrams of the close encounter and orbital path in reference to:
* Moon - Apophis

* Earth - Apophis - Moon

Object
_
Range
of size (m)
Date
yyyy-mm-dd
Nominal
distance ( km )
Min possible
distance ( km )
Max possible
distance ( km )
2017 QN2 6-13 2017-08-21.19 263479 254442 264559
2012 TC4 12-26 2017-10-12.80 277204 275858 278551
2015 EG 19-45 2019-03-04 475317 468648 805626
2013 GM3 14-33 2026-04-14 257742 25286 897587
(153814) 2001 WN5 586-1230 2028-06-26 503247 502948 503546
(99942) Apophis 325 +/-15 2029-04-14.61 95214 95174 95265
2001 AV43 33-72 2029-11-11 249678 247883 251324
2016 NL39 8-19 2030-06-29 416537 233186 1019116
2014 HB177 6-14 2034-05-05 406646 67033 1006865
2012 UE34 56-132 2041-04-07 387458 269276 493672
2004 RQ252 90-200 2043-04-16 205301 201597 209094
2014 GQ17 10-23 2044-06-10 404013 72896 1018754
2017 LD 8-19 2045-06-08 378525 251324 897587
2012 HG2 11-24 2047-02-12 225294 188642 260300
2016 RD34 8-19 2047-09-04 275420 275417 312040
2007 UD6 6-13 2048-10-18 424708 43383 897587
203 RS43 11-24 2050-09-19 426047 193185 942437
2015 JJ 105-230 2050-11-05 335548 335248 336011
2016 CG18 5-12 2054-02-05 383829 187760 1041056
2011 AX22 31-69 2055-05-12 410079 235997 592461
2007 TV18 44-105 2058-09-22 230381 230340 230420
2016 WJ1 146-328 2061-12-14 412163 384152 440241
2005 WY55 194-430 2065-05-28 158266 155728 160952
2010 VB1 59-138 2068-01-07 186697 149442 1031039
2000 SG344 31-69 2069-05-04 15249 15231 765024
(308635) 2005 YU55 360 (+/-40) 2075-11-07 306675 253418 373994
2015 XF261 25-60 2090-04-11 223248 220148 371390
2009 SH2 29-66 2090-09-29 409952 223305 506274
2010 RF12 6-14 2095-09-06 490352 18445 1047185
2013 XY8 25-60 2095-12-11 125662 88262 598391
(456938) 2007 YV56 170-370 2101-01-02 296203 290219 302187
2007 UW1 77-174 2129-10-19 374293 239356 613351
2009 DO111 73-166 2146-03-13 479161 388954 553512
(85640) 1998 OX4 162-356 2148-01-21 280387 280315 280460


_______ Measuring Units ______
Astronomical Unit (average distance between Earth and Sun) AU 149597871 km
Lunar Distance (average distance between Earth and Moon) LD 384400 km
Equatorial Moon Radius Mr 1738.14 km


Table Headings:

Object:
definitive number and name or provisional designation.
Range of size:
Probable size of the object from its absolute magnitude (H). For more information on this matter see the related page at the Minor Planet Center. A small range reported in italic suggests that the size has been deduced directly from radar observations.
Date:
Year, month, day of the close approach to the Moon.
Nominal distance:
Miss distance (from the center of mass) as resulting from nominal orbital elements.
Min and Max distance:
minimum and maximum miss possible distance based on the 3-sigma uncertainty confidence level. A simbol '**' means not computed, usually owing to a very high uncertainty.


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Web Curators: M. Carpino, F. Manca
Last modified: August 21, 2017