Английская Википедия:(26308) 1998 SM165

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Шаблон:Infobox planet

Шаблон:Mp is a resonant trans-Neptunian object and binary system from the Kuiper belt in the outermost regions of the Solar System. It was discovered on 16 September 1998, by American astronomer Nichole Danzl at the Kitt Peak National Observatory in Arizona.[1] It is classified as a twotino and measures approximately 280 kilometers in diameter. Its minor-planet moon was discovered in 2001.[2]

Twotino

Файл:1998SM165-orbit.png
The orbit of Шаблон:Mp compared to Pluto and Neptune

Шаблон:Mp has a semi-major axis (average distance from the Sun) near the edge of the classical belt. The Deep Ecliptic Survey (DES) list this trans-Neptunian object as a twotino that stays in a 1:2 orbital resonance with the planet Neptune (for every one orbit that a twotino makes, Neptune orbits twice).[3][4]

Physical characteristics

The observations with the infrared Spitzer Space Telescope combined with the orbits established using the Hubble Space Telescope allow the estimation of the density, assuming the components of equal albedo.

The resulting estimate of Шаблон:Val[5] is similar to the density of the binary plutino 47171 Lempo (0.3–0.8 g/cm3[6]) and Saturn's moon Hyperion (Шаблон:Val[7]) Such a low density is indicative of a highly porous composition dominated by ice.[5]

Шаблон:Mp is fairly red, with a color comparable to 79360 Sila–Nunam.

Satellite

On 22 December 2001, a minor-planet moon, provisionally designated Шаблон:Mp, was discovered by American astronomer Michael Brown and Chad Trujillo using the Hubble Space Telescope.[2] The discovery was announced in January 2002. The satellite measures approximately Шаблон:Convert in diameter and orbits its primary at a distance of Шаблон:Convert. Assuming a circular orbit, this takes Шаблон:Val days to complete one orbit.[2]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 5 July 2001.[8] As of 2018, it has not been named.[1]

References

Шаблон:Reflist

External links

Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Trans-Neptunian objects

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  1. ↑ 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  2. ↑ 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок Johnstons-Archive не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPEC 2009-J35 не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Buie не указан текст
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок Spencer2006 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Stansberry не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Jacobson 2006 не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Circulars-Archive не указан текст
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