2014 UZ224

2014 UZ224
ilustracja
Odkrywca

Międzyamerykańskie Obserwatorium Cerro Tololo[1]

Data odkrycia

19 sierpnia 2014[1]

Charakterystyka orbity (2022-08-09)
Przynależność
obiektu

dysk rozproszony[2]

Półoś wielka

108,87 ± 0,15[3] au

Mimośród

0,644 ± 0,001[3]

Peryhelium

38,75 ± 0,02[3] au

Aphelium

178,98 ± 0,25[3] au

Okres obiegu
wokół Słońca

1135,9 ± 2,4[3] lat

Inklinacja

26,79[3]°

Charakterystyka fizyczna
Średnica

ok. 635[2] km

Albedo

ok. 0,13[2]

Jasność absolutna

ok. 3,48[3]m

2014 UZ224planetoida z grupy obiektów transneptunowych[3], krążąca wokół Słońca w obrębie dysku rozproszonego[2]. Planetoida ta jeszcze nie ma własnej nazwy ani kolejnego numeru, a jedynie oznaczenie prowizoryczne.

Obiekt został odkryty w ramach przeglądu nieba Dark Energy Survey za pomocą kamery Dark Energy Camera (DECam)[4].

Orbita

Orbita 2014 UZ224 jest nachylona pod kątem 26,8° do ekliptyki, ma też duży mimośród – około 0,64[3]. Obiekt należy do najodleglejszych zaobserwowanych w Układzie Słonecznym, znajdując się w 2016 roku blisko 92 au od Słońca[2][5]. Około 2142 roku planetoida przejdzie przez swoje peryhelium, w odległości około 38,7 au od Słońca[3].

Właściwości fizyczne

Niewiele jak dotąd wiadomo o tym odległym obiekcie. Duża absolutna wielkość gwiazdowa, wynosząca około 3,48m[3], kwalifikuje go do grupy kandydatów na planety karłowate[6]. Średnica planetoidy 2014 UZ224 na podstawie jej jasności szacowana jest na około 635 km[2], co czyni ją jedną z największych odkrytych planetoid transneptunowych.

Zobacz też

Przypisy

  1. a b MPEC 2016-T104 : 2014 UZ224. „Minor Planet Electronic Circ.”, 2016-10-11. IAU Minor Planet Center. ISSN 1523-6714. [dostęp 2017-05-15]. (ang.). 
  2. a b c d e f DISCOVERY AND PHYSICAL CHARACTERIZATION OF A LARGE SCATTERED DISK OBJECT AT 92 AU. 2017-03-07. [dostęp 2017-05-15]. (ang.).
  3. a b c d e f g h i j k 2014 UZ224 w bazie Jet Propulsion Laboratory (ang.). last obs. used 2018-11-15. [dostęp 2022-08-10].
  4. Joe Palca: A Friend For Pluto: Astronomers Find New Dwarf Planet In Our Solar System. 2016-10-11. [dostęp 2017-05-15]. (ang.).
  5. Nicole Casal Moore: New dwarf planet solar system's 2nd most distant. 2016-10-14. [dostęp 2017-05-15]. (ang.).
  6. Mike Brown: How many dwarf planets are there in the outer solar system?. 2017-05-15. [dostęp 2017-05-15]. (ang.).

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