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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: November 20, 2019

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 m, SAEL takes account of smaller objects diameter less than 240 m.)

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 )

_________________________. Range _ of _ nominal _ distance _________________________
_ -_______. LD . 0.135 -_________. . Equatorial Radii . 29.9 -____________. km . . 51,894 .
_ - > 0.135 . LD . 0.405 ____ > 29.9 . Equatorial Radii - 89.6 ___- > . 51,894 . km . 155,682 .
_ - > 0.405 . LD . 0.810 ____ > 89.6 . Equatorial Radii . 179 ___-. > 155,682 . km . 311,364 .
_ - > 0.810 . LD . 1.215 ____ > 179 . Equatorial Radii . 269 ___-. > 311,364 . km . 467,046 .
_ - > 1.215 . LD . 1.620 ____ > 269 . Equatorial Radii . 358 ___-. > 467,046 . km . 622,728 .

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)
Radar
Obs.
2019 WH _ 15-34 2019-11-19.45 360854 360847 360863 -
2019 WF _ 11-24 2019-11-20.66 407549 405964 408692 -
2019 QB1 _ 9-20 2022-08-20.35 273193 120996 861283 -
2018 QE _ 8-18 2024-10-08.43 605868 421775 877167 -
2016 VA _ 8-19 2024-11-02.25 403379 341492 1040779 -
2013 GM3 _ 14-33 2026-04-14.91 257742 25286 897587 -
2019 DP _ 25-60 2027-08-30.63 575579 340138 927864 -
(153814) 2001 WN5 _ 932 (±11) 2028-06-26.32 503247 502948 503546 x
(99942) Apophis _ 325 (±15) 2029-04-14.61 95214 95174 95265 x
2001 AV43 _ 33-72 2029-11-11.05 249678 247883 251324 x
2016 NL39 _ 8-19 2030-06-29.53 416537 233186 1019116 -
2018 DU _ 6-13 2032-02-24.68 435812 76676 983284 -
2008 DB _ 18-43 2032-08-14.62 442484 435016 449995 -
2014 HB177 _ 6-14 2034-05-05.67 406646 67033 1006865 -
2012 UE34 _ 56-132 2041-04-08.00 379199 375814 382582 -
2017 KJ32 _ 4-10 2042-05-23.09 549546 149106 982819 -
2018 GE2 _ 11-24 2042-10-29.43 204735 146766 1454561 -
2004 RQ252 _ 90-200 2043-04-16.33 205301 201597 209094 -
2014 GQ17 _ 10-23 2044-06-10.13 404013 72896 1018754 -
2017 LD _ 8-19 2045-06-08.91 378525 251324 897587 -
2012 HG2 _ 11-24 2047-02-12.46 225294 188642 260300 -
2016 RD34 _ 8-19 2047-09-04.97 275420 275417 312040 x
2007 UD6 _ 6-13 2048-10-18.13 424708 43383 897587 -
2013 RS43 _ 11-24 2050-09-18.73 426047 193185 942437 -
2015 JJ _ 105-230 2050-11-05.80 335548 335248 336011 -
2016 CG18 _ 5-12 2054-02-05.92 383829 187760 1041056 -
2011 AX22 _ 31-69 2055-05-12.97 410079 235997 592461 -
2019 TK5 _ 8-19 2056-04-27.35 403042 114154 757991 -
(523809) 2007 TV18 _ 44-105 2058-09-22.12 230376 230348 230405 -
2016 WJ1 _ 146-328 2061-12-14.61 418527 408245 428822 -
2005 WY55 _ 194-430 2065-05-28.04 158266 155728 160952 -
2018 VO9 _ 11-24 2067-12-10.25 591749 583336 602091 -
2015 YM1 _ 5-13 2067-12-17.44 563885 308118 980626 -
2000 SG344 _ 31-69 2069-05-04.42 15249 15231 765024 -
2016 CV246 _ 21-52 2071-08-30.09 520680 520391 1043471 -
2017 MB1 _ 464-1044 2072-07-26.00 454380 449833 978333 -
(308635) 2005 YU55 _ 360 (±40) 2075-11-08.07 306675 253418 373994 x
2002 CB19 _ 25-60 2084-08-10-76 443345 441655 445039 -
2018 BP _ 194-430 2085-09-24.90 321184 284947 487200 -
2008 WD14 _ 69-158 2085-11-19.92 553916 553500 554335 -
2015 XF261 _ 25-60 2090-04-11.08 223248 220148 371390 -
2009 SH2 _ 29-66 2090-09-29.39 409952 223305 506274 -
2013 XY8 _ 25-60 2095-12-11.92 125662 88262 598391 x
2016 WJ1 _ 146-328 2097-12-14.27 364736 29418 985750 -
(363116) = 2001 GQ2 _ 250-566 2100-04-27.57 296203 290219 302187 x
(456938) 2007 YV56 _ 170-370 2101-01-02.00 535037 534859 535218 -
2007 UW1 _ 77-174 2129-10-19.67 374293 239356 613351 -
(153201) 2000 WO107 _ 366-820 2140-12-01.73 570574 569754 571395 -
2009 DO111 _ 73-166 2146-03-23.21 473069 440820 657454 x
(85640) 1998 OX4 _ 162-356 2148-01-21.83 280387 280315 280460 -
2018 FQ4 _ 11-24 2148-12-25.94 324759 3689 (**) -
2014 SM143 _ 230-518 2197-10-23.13 523518 411862 959955 x


http://www.brera.mi.astro.it/sormano/tam-H.pdf Diagram reporting absolute magnitude (H) in reference to the number of objects reported here having close encounters up to ~1.5 LD .

Please take into account the color flags attached to any designation.


_______ 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.
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 'n/a' means not available, usually owing to a very high uncertainty. A symbol '(**)' means more than 1.5 million km.


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Web Curators: M. Carpino, F. Manca
Last modified: November 20, 2019