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OAS > CEIP - Close Encounters with the Inner Planets

Sormano Astronomical Observatory: CEIP
Close Encounters with the Inner Planets

Last update: August 10, 2021

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


This table (sorted by date) reports asteroids with a nominal planet-miss distance within ~ 0.5 million km for the coming years.

All data have been extrapolated from our technical list PCEL (Planetary Close Encounter List) (see this page for more details).

Nominal miss distances in km are computed using a software developed at Sormano Observatory by A. Testa (unpublished, 1993 and 2016) whereas minimum and maximum values based on a 3-sigma uncertainty confidence level are computed using OrbFit Software Package by F. Manca.

All the distances are computed between the centers of mass of the bodies (Planet and minor body). Take into account the Planets radii in order to refer distances from Planets surface.


INTERESTING PAST CLOSE ENCOUNTERS
are also reported


_.;- Predicted close encounters with the Inner Planets _..-
[ planetocentric distance (nominal for box color) ]

-. Range of distance - ___ Range of distance ___ - Range of Mercury - __ Range of Venus __ __. Range of Mars __
_______ LD . 0.115 _________ km . . 44,206 _ _____-- Radii . 18.1 ______ Radii . 07.3 ______ Radii . 13.0
> 0.115 . LD . 0.345 > . 44,206 . km . 132,618 _ > 18.1 . Radii . 54.4 > 07.3 . Radii . 21.9 > 13.0 . Radii . 39.1
> 0.345 . LD . 0.690 > 132,618 . km . 265,236 _ > 54.4 . Radii . 109 > 21.9 . Radii . 43.8 > 39.1 . Radii . 78.1
> 0.690 . LD . 1.035 > 265,236 . km . 397,854 _ > 109 . Radii . 163 > 43.8 . Radii . 65.7 > 78.1 . Radii . 117
> 1.035 . LD . 1.380 > 397,854 . km . 530,472 _ > 163 . Radii . 217 > 65.7 . Radii . 87.7 > 117 . Radii . 156

Object
.______________________
-- Range
of size ( m )
Planets
.._________
Date
yyyy - mm - dd
Nominal
distance (km)
Min possible
distance (km)
Max possible
distance (km)
Radar
Obs.
2020 LD _ 90-200 Mercury 2025-09-23.33 325583 88245 (**) -
(289227) 2004 XY60 _ 442-992 Mercury 2026-08-24.72 432044 414840 448351 -
2001 CP36 _ 46-110 Mercury 2027-12-23.75 406613 402418 409748 x
2013 UB3 _ 18-43 Venus 2028-05-20.50 452388 451290 453519 -
2018 VB1 _ 46-110 Mercury 2028-05-23.06 428351 426483 430217 -
(406221) 2007 BO20 _ 840-1900 Mars 2028-12-15.94 267780 254316 270772 -
(308635) 2005 YU55 _ 360 (±40) Venus 2029-01-19.86 346711 346478 346944 x
2013 AC53 _ 15-34 Mars 2030-01-07.79 224943 n/a n/a -
2021 EZ3 _ 23-56 Mars 2030-02-08.10 191770 50534 (**) -
2011 YW10 _ 35-75 Venus 2031-02-18.68 380450 328666 454627 -
(252399) 2001 TX44 _ 384-860 Mercury 2033-03-26.01 444611 425902 459403 -
2012 XS111 _ 110-240 Mercury 2036-05-31.28 519911 516051 523775 -
2006 KZ86 _ 738-1660 Mercury 2038-09-08.16 377355 377082 377649 -
2018 VB1 _ 46-110 Mercury 2040-03-27.59 485815 470735 501144 -
2008 KD6 _ 316-710 Mars 2042-10-26.45 169218 168522 169913 -
2009 CE _ 37-83 Venus 2043-04-28.20 353193 347837 358553 -
2018 VB1 _ 46-110 Mercury 2047-06-18.44 256858 218941 299820 -
2012 XS111 _ 110-240 Mercury 2047-12-23.11 259193 234471 284540 -
(516461) 2005 LF8 _ 530-1200 Mars 2061-12-27.53 116366 115190 117332 -
(162385) 2000 BM19 _ 508-1148 Venus 2063-03-03.03 259083 251978 267354 x
2018 VB1 _ 46-110 Mercury 2064-07-08.64 457146 90534 1145015 -
(509352) 2007 AG _ 250-566 Mercury 2064-10-18.62 439815 432335 448791 x
(326386) 2001 OA14 _ 558-1260 Mars 2073-02-14.18 341158 340672 341647 -
(303250) 2004 RU10 _ 642-1440 Mercury 2079-11-16.89 406502 404222 408784 -
(363599) 2004 FG11 _ 170-370 Venus 2080-05-07.70 390452 389316 391587 x
2015 EO61 _ 130-300 Mars 2083-08-17.53 443019 371142 517030 -
2011 EB7 _ 178-390 Mars 2091-04-01.70 272762 270714 274813 -
(252399) 2001 TX44 _ 384-860 Mercury 2105-03-31.68 510877 492773 548127 -
2008 GD _ 288-650 Mercury 2113-04-20.02 388960 388955 1077105 -
2012 XS111 _ 110-240 Mercury 2118-01-24.00 88703 88396 (**) -
2015 FV118 _ 126-288 Venus 2119-11-09.83 388349 356538 420412 -
2005 FV2 _ 486-1096 Venus 2129-07-14.89 134073 129621 138743 -
2018 VB1 _ 46-110 Mercury 2134-11-06.11 274732 253871 (**) -
2016 VU2 _ 110-240 Mercury 2143-01-18.08 346162 327485 360265 -
2015 NW9 _ 210-470 Mars 2161-03-30.05 485113 469312 500969 -
(477519) 2010 DJ56 _ 384-860 Mars 2169-02-28.50 156412 145993 163846 -
2007 RU17 _ 642-1440 Mercury 2185-05-16.02 490681 450290 531080 x
2000 AA6 _ 105-230 Venus 2208-09-11.71 285731 35903 987345 -


__ Interesting Past Close Encounter with the Inner Planets __
[ planetocentric distance (nominal for box color) ]

Object
.______________________
-- Range
of size ( m )
Planets
.._________
Date
yyyy - mm - dd
Nominal
distance (km)
Min possible
distance (km)
Max possible
distance (km)
Radar
Obs.
2005 YR3 ________ _ 62-144 _ Venus . 2012-12-21.65 256212 255965 256459 -
C/2013 A1 _ __ Mars 2014-10-19.77 134638 n/a n/a -


http://www.brera.mi.astro.it/sormano/ceip-H.pdf Diagram reporting absolute magnitude (H) in reference to the number of objects reported here having close encounters up to ~0.5 million km.

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 Mercury Radius MeR 2439.7 km
Equatorial Venus _. Radius VR 6051.8 km
Equatorial Mars _.. Radius MaR 3396.2 km


Table Headings:

Object:
definitive number and name or provisional designation.
Date:
Year, month, day of the close approach to each planets.
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.
Nominal distance:
Miss (planetocentric) distance 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: August 10, 2021