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Четыре крупнейших астероида: 1 Церера , 4 Веста , 2 Паллада и 10 Гигея.

Ниже коллекция списков исключительных астероидов в Солнечной системе . Для целей этой статьи «астероид» означает малую планету до орбиты Нептуна , которая включает вероятную карликовую планету Цереру , троянцев Юпитера и кентавров . Для получения полного списка малых планет в порядке номеров см. Список малых планет .

Астероидам присваиваются номера малых планет, но не все второстепенные планеты являются астероидами. Номера малых планет также присваиваются объектам пояса Койпера, который похож на пояс астероидов, но находится на расстоянии около 30–60 а.е., тогда как астероиды находятся в основном на расстоянии 2–3 а.е. от Солнца и на орбите Юпитера в 5 а.е. от солнце. Кроме того, кометы обычно не включаются в номера малых планет и имеют свои собственные соглашения об именах .

Астероидам присваивается уникальный порядковый идентификационный номер после точного определения их орбиты. До этого они были известны только по систематическому названию или условному обозначению , например, 1950 DA .

Физические характеристики [ править ]

Наибольший по диаметру [ править ]

Оценка размеров астероидов по наблюдениям затруднена из-за их неправильной формы, переменного альбедо и малого углового диаметра . Публикуются наблюдения Большого телескопа за большинством крупных астероидов за 2019–2021 годы. [1]

The number of bodies grows rapidly as the size decreases. Based on IRAS data there are about 140 main-belt asteroids with a diameter greater than 120 km.[3] For a more complete list, see List of Solar System objects by size.

The inner asteroid belt (defined as the region interior to the 3:1 Kirkwood gap at 2.50 AU) has few large asteroids. Of those in the above list, only 4 Vesta, 19 Fortuna, 6 Hebe, 7 Iris and 9 Metis orbit there. (Sort table by mean distance.)

Most massive[edit]

Below are the sixteen most-massive measured asteroids.[4] Ceres, at a third the estimated mass of the asteroid belt, is half again as massive as the next fifteen put together. The masses of asteroids are estimated from perturbations they induce on the orbits of other asteroids, except for asteroids that have been visited by spacecraft or have an observable moon, where a direct mass calculation is possible. Different sets of astrometric observations lead to different mass determinations; the biggest problem is accounting for the aggregate perturbations caused by all of the smaller asteroids.[5]

Chart showing the ten known asteroids in relation to their mass, the precision, and the percentage in the asteroid belt.[4]
The relative masses of the top twelve asteroids known,[4] compared to the remaining mass of the asteroid belt.[6][7]

The proportions assume that the total mass of the asteroid belt is 2.39×1021 kg, or (12.4±1.0)×10−10 M.[6]

Outside the top four, the ranking of all the asteroids is uncertain, as there is a great deal of overlap among the estimates. 48 Doris might also be in this range, but is very poorly constrained.

The largest asteroids with an accurately measured mass, because they have been (and are being) studied by the probe Dawn, are 1 Ceres with a mass of 939.3 ± 0.5×1018 kg, and 4 Vesta at 259.076 ± 0.001×1018 kg. The third-largest asteroid with an accurately measured mass, because it has moons, is 87 Sylvia at 14.78 ± 0.06×1018 kg.

For a more complete list, see List of Solar System objects by size. Other large asteroids such as 423 Diotima currently only have estimated masses.[8][9]

Brightest from Earth[edit]

Only Vesta is regularly bright enough to be seen with the naked eye. The following asteroids can all reach an apparent magnitude brighter than or equal to the +8.3 attained by Saturn's moon Titan at its brightest, which was discovered 145 years before the first asteroid was found owing to its closeness to the easily observed Saturn.

None of the asteroids in the outer part of the asteroid belt can ever attain this brightness. Even Hygiea and Interamnia rarely reach magnitudes of above 10.0. This is due to the different distributions of spectral types within different sections of the asteroid belt: the highest-albedo asteroids are all concentrated closer to the orbit of Mars, and much lower albedo C and D types are common in the outer belt.

Those asteroids with very high eccentricities will only reach their maximum magnitude rarely, when their perihelion is very close to a heliocentric conjunction with Earth, or (in the case of 99942 Apophis) when the asteroid passes very close to Earth.

* Apophis will only achieve that brightness on April 13, 2029.[10][11] It typically has an apparent magnitude of 20–22.

Slowest rotators[edit]

This list contains the slowest-rotating known minor planets with a period of at least 1000 hours, or 4123 days, while most bodies have rotation periods between 2 and 20 hours. Also see Potentially slow rotators for minor planets with an insufficiently accurate period (U < 2).

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Fastest rotators[edit]

This list contains the fastest-rotating minor planets with a period of less than 100 seconds, or 0.027 hours. Bodies with a highly uncertain period, having a quality of less than 2, are highlighted in dark-grey. The fastest rotating bodies are all unnumbered near-Earth objects (NEOs) with a diameter of less than 100 meters (see table).

Among the numbered minor planets with an unambiguous period solution are (459872) 2014 EK24, a 60-meter sized stony NEO with a period of 352 seconds, as well as (335433) 2005 UW163 and (60716) 2000 GD65, two main-belt asteroids, with a diameter of 0.86 and 2.25 kilometers and a period of 1.29 and 1.95 hours, respectively (see full list).

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Orbital characteristics[edit]

Retrograde[edit]

Minor planets with orbital inclinations greater than 90° (the greatest possible is 180°) orbit in a retrograde direction. As of March 2018, of the near-800,000 minor planets known, there are only 99 known retrograde minor planets (0.01% of total minor planets known).[12] In comparison, there are over 2,000 comets with retrograde orbits. This makes retrograde minor planets the rarest group of all. High-inclination asteroids are either Mars-crossers (possibly in the process of being ejected from the Solar System) or damocloids. Some of these are temporarily captured in retrograde resonance with the gas giants.[13]

^ the value given when the number of observations is multiplied by the observation arc; larger values are generally better than smaller values depending on residuals.

Highly inclined[edit]

Trojans[edit]

  • Earth trojans: 2010 TK7.
  • Mars trojans: (121514) 1999 UJ7, 5261 Eureka, (101429) 1998 VF31, (311999) 2007 NS2, (385250) 2001 DH47, 2011 SC191, 2011 UN63, and the candidate 2011 SL25.
  • Jupiter trojans: the first one was discovered in 1906, 588 Achilles, and the current total is over 6,000.

Record-setting close approaches to Earth[edit]

Viewed in detail[edit]

Spacecraft targets[edit]

Surface resolved by telescope or lightcurve[edit]

  • 1 Ceres
  • 2 Pallas
  • 3 Juno
  • 4 Vesta
  • 5 Astraea
  • 6 Hebe
  • 7 Iris
  • 8 Flora
  • 9 Metis
  • 10 Hygiea
  • Koronis family
  • 12 Victoria
  • 13 Egeria
  • 14 Irene
  • 15 Eunomia
  • 16 Psyche
  • 18 Melpomene
  • 26 Proserpina
  • 29 Amphitrite
  • 35 Leukothea
  • 37 Fides
  • 51 Nemausa
  • 52 Europa
  • 65 Cybele
  • 87 Sylvia
  • 89 Julia
  • 121 Hermione
  • 130 Elektra
  • 201 Penelope
  • 216 Kleopatra
  • 324 Bamberga
  • 511 Davida
  • 925 Alphonsina
  • 1140 Crimea
  • 9969 Braille
  • (33342) 1998 WT24
  • 66391 Moshup
  • (136617) 1994 CC
  • (285263) 1998 QE2
  • (357439) 2004 BL86

Multiple systems resolved by telescope[edit]

  • 90 Antiope

Comet-like activity[edit]

  • 2006 VW139
  • P/2013 P5

Disintegration[edit]

  • 6478 Gault
  • P/2013 R3

Timeline[edit]

Landmark asteroids[edit]

Numbered minor planets that are also comets[edit]

The above table lists only numbered asteroids that are also comets. Note there are several cases where a non-numbered minor planets turned out to be a comet, e.g. C/2001 OG108 (LONEOS), which was provisionally designated 2001 OG108.

Minor planets that were misnamed and renamed[edit]

In earlier times, before the modern numbering and naming rules were in effect, asteroids were sometimes given numbers and names before their orbits were precisely known. And in a few cases duplicate names were given to the same object (with modern use of computers to calculate and compare orbits with old recorded positions, this type of error no longer occurs). This led to a few cases where asteroids had to be renamed.[19]

Landmark names[edit]

Asteroids were originally named after female mythological figures. Over time the rules loosened.

First asteroid with non-Classical and non-Latinized name: 64 Angelina (in honor of a research station)

First asteroid with a non-feminine name: 139 Juewa (ambiguous) or 141 Lumen

First asteroid with a non-feminized man's name: 903 Nealley

Lowest-numbered unnamed asteroid (As of 2020): (3708) 1974 FV1

Landmark numbers[edit]

Many landmark numbers had specially chosen names for asteroids, and there was some debate about whether Pluto should have received number 10000, for example. This list includes some non-asteroids.

Powers of 10x1
  • 1 Ceres
  • 10 Hygiea
  • 100 Hekate
  • 1000 Piazzia
  • 10000 Myriostos
  • 100000 Astronautica

Powers of 10x2

  • 2 Pallas
  • 20 Massalia
  • 200 Dynamene
  • 2000 Herschel
  • 20000 Varuna (Kuiper belt object)
  • (200000) 2007 JT40

Powers of 10x3

  • 3 Juno
  • 30 Urania
  • 300 Geraldina
  • 3000 Leonardo
  • 30000 Camenzind
  • (300000) 2006 UW30

Powers of 10x4

  • 4 Vesta
  • 40 Harmonia
  • 400 Ducrosa
  • 4000 Hipparchus
  • (40000) 1998 HZ87
  • (400000) 2006 DK190

Powers of 10x5

  • 5 Astraea
  • 50 Virginia
  • 500 Selinur
  • 5000 IAU
  • 50000 Quaoar (Kuiper belt object)
  • (500000) 2011 PM6

Powers of 10x6

  • 6 Hebe
  • 60 Echo
  • 600 Musa
  • 6000 United Nations
  • 60000 Miminko

Powers of 10x7

  • 7 Iris
  • 70 Panopaea
  • 700 Auravictrix
  • 7000 Curie
  • (70000) 1998 XX6

Powers of 10x8

  • 8 Flora
  • 80 Sappho
  • 800 Kressmannia
  • 8000 Isaac Newton
  • (80000) 1999 FR33

Powers 10x9

  • 9 Metis
  • 90 Antiope
  • 900 Rosalinde
  • 9000 Hal
  • 90000 2002 TK102

Repeated 1

  • 11 Parthenope
  • 111 Ate
  • 1111 Reinmuthia
  • 11111 Repunit
  • (111111) 2001 VO84

Repeated 2

  • 22 Kalliope
  • 222 Lucia
  • 2222 Lermontov
  • 22222 Hodios
  • (222222) 2000 FK15

Repeated 3

  • 33 Polyhymnia
  • 333 Badenia
  • 3333 Schaber
  • (33333) 1998 SP66
  • (333333) 2001 RC3

Repeated 4

  • 44 Nysa
  • 444 Gyptis
  • 4444 Escher
  • (44444) 1998 UZ19
  • (444444) 2006 CL67

Repeated 5

  • 55 Pandora
  • 555 Norma
  • 5555 Wimberly
  • 55555 DNA

Repeated 6

  • 66 Maja
  • 666 Desdemona
  • 6666 Frö
  • (66666) 1999 TL9

Repeated 7

  • 77 Frigga
  • 777 Gutemberga
  • 7777 Consadole
  • (77777) 2001 QW16

Repeated 8

  • 88 Thisbe
  • 888 Parysatis
  • 8888 Tartaglia
  • (88888) 2001 SE288

Repeated 9

  • 99 Dike
  • 999 Zachia
  • 9999 Wiles
  • (99999) 1981 FP

See also[edit]

  • Asteroid mining
  • Asteroid Redirect Mission (proposed NASA mission)
  • Centaur (minor planet)
  • List of numbered Aten asteroids
  • List of Amor asteroids
  • List of Apollo asteroids
  • List of asteroids named after people
  • List of asteroids named after places
  • List of instrument-resolved minor planets
  • List of meteor air bursts
  • List of minor planet moons
  • List of Venus-crossing minor planets
  • List of Earth-crossing minor planets
  • List of Jupiter-crossing minor planets
  • List of Mars-crossing minor planets
  • List of Mercury-crossing minor planets
  • List of Neptune-crossing minor planets
  • List of Saturn-crossing minor planets
  • List of Solar System objects by size
  • List of Uranus-crossing minor planets
  • Lists of astronomical objects
  • Scattered disc object
  • Small Solar System body
  • ʻOumuamua

Books[edit]

  • Dictionary of Minor Planet Names, 5th ed.: Prepared on Behalf of Commission 20 Under the Auspices of the International Astronomical Union, Lutz D. Schmadel, ISBN 3-540-00238-3

References[edit]

  1. ^ As of Jan 2019, good rotational coverage (≥ 4 epochs) had been obtained for 2 Pallas, 3 Juno, 4 Vesta, 6 Hebe, 7 Iris, 9 Metis, 10 Hygiea, 12 Victoria, 13 Egeria, 15 Eunomia, 16 Psyche, 19 Fortuna, 22 Kalliope, 30 Urania, 41 Daphne, 45 Eugenia, 51 Nemausa, 52 Europa, 63 Ausonia, 87 Sylvia, 88 Thisbe, 89 Julia, 173 Ino, 187 Lamberta, 216 Kleopatra, 324 Bamberga, 476 Hedwig, 511 Davida, 596 Scheila and 704 Interamnia.[1]
  2. ^ Carry, B.; et al. (2009). "Physical properties of (2) Pallas". Icarus. 205 (2): 460–472. arXiv:0912.3626. doi:10.1016/j.icarus.2009.08.007.
  3. ^ "JPL Small-Body Database Search Engine: asteroids and orbital class (IMB or MBA or OMB) and diameter > 120 (km)". JPL Solar System Dynamics. Retrieved 2012-04-16.
  4. ^ a b c "Recent Asteroid Mass Determinations" Archived 2013-07-08 at WebCite. Maintained by Jim Baer. Last updated 2010-12-12. Access date 2011-09-02.
  5. ^ Baer, James; Steven R. Chesley (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris". Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media. 100 (2008): 27–42. Bibcode:2008CeMDA.100...27B. doi:10.1007/s10569-007-9103-8.
  6. ^ a b Pitjeva, E. V. (May 2005). "High-Precision Ephemerides of Planets—EPM and Determination of Some Astronomical Constants". Solar System Research. Springer Science+Business Media. 39 (3): 184. Bibcode:2005SoSyR..39..176P. CiteSeerX 10.1.1.475.9201. doi:10.1007/s11208-005-0033-2.
  7. ^ Pitjeva, E. V. (2004). "Estimations of masses of the largest asteroids and the main asteroid belt from ranging to planets, Mars orbiters and landers". 35th COSPAR Scientific Assembly. Held 18–25 July 2004, in Paris, France. p. 2014. Bibcode:2004cosp...35.2014P.
  8. ^ Michalak, G. (2001). "Determination of asteroid masses". Astronomy & Astrophysics. 374 (2): 703–711. Bibcode:2001A&A...374..703M. doi:10.1051/0004-6361:20010731. Retrieved 2008-11-10.
  9. ^ Michalak, G. (2001), assumed masses of perturbing asteroids used in calculations of perturbations of the test asteroids.[clarification needed]
  10. ^ "(99942) Apophis Ephemerides for 13 Apr 2029". NEODyS (Near Earth Objects Dynamic Site). Retrieved 2011-05-05.
  11. ^ "Minor Planet Ephemeris Service: Query Results". Minor Planet Center.
  12. ^ "JPL Small-Body Database Search Engine: Asteroids and i > 90 (deg)". JPL Solar System Dynamics. Retrieved 2019-03-31.
  13. ^ Morais, M.H.M.; F. Namouni (2013). "Asteroids in retrograde resonance with Jupiter and Saturn". Monthly Notices of the Royal Astronomical Society Letters. 436: L30–L34. arXiv:1308.0216. Bibcode:2013MNRAS.436L..30M. doi:10.1093/mnrasl/slt106.
  14. ^ 2008 DG8 and Ceres in 1930
  15. ^ 1999 LE31 approaches to Jupiter and Saturn
  16. ^ Chang'E 2 images of Toutatis – December 13, 2012 – The Planetary Society
  17. ^ "1994 Release #9412" (Press release). NASA. 1994-02-18. Retrieved 2008-04-17.
  18. ^ "Sentry: Earth Impact Monitoring | 29075 (1950 DA) Earth Impact Risk Summary". JPL Center for Near Earth Object Studies. 7 December 2015. Retrieved 11 March 2018.
  19. ^ "Archived copy". Archived from the original on 2004-07-03. Retrieved 2004-04-27.CS1 maint: archived copy as title (link)

External links[edit]

  • Lists and plots: Minor Planets
  • PDS Asteroid Data Archive
  • SBN Small Bodies Data Archive
  • NASA Near Earth Object Program
  • Major News About Minor Objects
  • Latest News About Asteroids & Meteorites