159 Aemilia

159 Aemilia
159 Aemilia'nın 3D dışbükey şekil modeli
Keşif
KeşfedenP. P. Henry
Keşif tarihi26 Ocak 1876
Adlandırmalar
MPC belirtmesi(159) Aemilia
Telaffuz/ɪˈmɪliə/[1]
Adın kaynağı
Via Aemilia
Alternatif adlandırma
A876 BA; 1959 EG1
Asteroit kuşağı (Hygiea ailesi)
SıfatlarAemilian /ɪˈmɪliən/[2]
Yörünge özellikleri[3]
Dönem 31 Temmuz 2016 (JG 2.457.600,5)
Belirsizlik parametresi 0
Gözlem yayı112,24 yıl (40.996 gün)
Günöte3,4377 AU (514,27 Gm)
Günberi2,76896 AU (414,231 Gm)
3,1033 AU (464,25 Gm)
Dış merkezlik0,10775
5,47 yıl (1.996,8 gün)
16,86 km/s
214,036°
0° 10d 49.008s / gün
Eğiklik6,1308°
134,132°
333,387°
Dünya MOID1,78581 AU (267,153 Gm)
Jüpiter MOID1,67782 AU (250,998 Gm)
TJüpiter3,203
Fiziksel özellikler
C[4] (Tholen)
8,12,[3] 8,10[4]
Boyutlar124,97±2,4 km[3]
127,3 km[4]
Kütle~1,4×1018 kg
Ortalama yoğunluk
~1,4 g/cm3[5]
Ekvatoral yerçekimi
~0,024 m/s2
Ekvatoral kurtulma hızı
~0,055 km/s
24,476 sa (1,0198 g)[3]
~1,05 d[6]
0,0639±0,003[3]
0,0627±0,0142[4]
Sıcaklık~160 K
max: 239K (-34°C)
  Wikimedia Commons'ta ilgili ortam

Aemilia (küçük gezegen tanımı: 159 Aemilia) büyük bir ana kuşak asteroididir. Aemilia, 26 Ocak 1876'da Fransız kardeşler Paul Henry ve Prosper Henry tarafından keşfedildi. Bu keşfin kredisi Paul'e verildi. Adını muhtemelen İtalya'da Piacenza'dan Rimini'ye uzanan bir Roma yolu olan Via Aemilia'dan almıştır.

Bu yavaş dönen, karanlık asteroit, C-tipi asteroit olarak sınıflandırılmasına dayanan ilkel bir karbonlu bileşime sahiptir.[4] 2006 yılında yapılan fotometrik gözlemler yaklaşık 25 saatlik bir dönüş süresi vermiştir. Indiana, Terre Haute'deki Oakley Gözlemevinde yapılan müteakip gözlemler, 16,37 ± 0,02 saatlik bir ışık eğrisi periyodu ve parlaklıkta 0,24 ± 0,04 büyüklüğünde bir değişiklik buldu.[7]

Hygiea ailesi içinde yörüngede dolanır, ancak büyük olasılıkla o aileyi oluşturan krater sürecinden kaynaklanamayacak kadar büyük olduğu için ilgisiz iç içe geçen bir asteroit olabilir. Aemilia tarafından şimdiye kadar üç yıldız örtülmesi kaydedildi, ilki 2001'de, ikincisi 2003'te[8] ve üçüncüsü 2016'da.[9]

Kaynakça

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ "Emilian, Æmilian." Oxford Dictionary of English 2e, Oxford University Press, 2003.
  3. ^ a b c d e Yeomans, Donald K., "159 Aemilia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, 4 Mart 2019 tarihinde kaynağından arşivlendi, erişim tarihi: 12 Mayıs 2016. 
  4. ^ a b c d e Pravec, P.; Harris, A. W.; Kusnirak, P.; Galad, A.; Hornoch, K. (Mayıs 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan, 1667 (1667), s. 6089, Bibcode:2012LPICo1667.6089P.  See Table 4.
  5. ^ Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. (Temmuz 2002), "Hidden Mass in the Asteroid Belt", Icarus, 158 (1), ss. 98-105, Bibcode:2002Icar..158...98K, doi:10.1006/icar.2002.6837. 
  6. ^ "Asteroid Lightcurve Data Base (LCDB) PDS SBN Asteroid/Dust Subnode". 12 Eylül 2010 tarihinde kaynağından arşivlendi. 
  7. ^ Ditteon, Richard; Hawkins, Scot (Eylül 2007), "Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006", The Minor Planet Bulletin, 34 (3), ss. 59-64, Bibcode:2007MPBu...34...59D. 
  8. ^ "Small Bodies Occultations | PDS SBN Asteroid/Dust Subnode". sbn.psi.edu (İngilizce). 9 Aralık 2019. 12 Eylül 2010 tarihinde kaynağından arşivlendi. Erişim tarihi: 8 Mayıs 2023. 
  9. ^ "2016/09/01 | 159 | Aemilia | TYC 6349-00855-1". 14 Eylül 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 4 Şubat 2023. 

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