A-tipi asteroit

A tipi asteroitler, güçlü, geniş 1 μm olivin özelliğine ve 0,7 μm'nin altında çok kırmızımsı bir spektruma sahip nispeten nadir iç kuşak asteroitleridir. Bir asteroidin tamamen farklılaşmış mantosundan geldikleri düşünülmektedir ve yüksek bir yoğunluğa sahip oldukları görülmektedir. Bir araştırmada 7 benzer A, V ve X tipi asteroidin ortalama yoğunluğunun 3,6 g/cm3 olduğu bulunmuştur.[1]

A tipi asteroitler o kadar nadirdir ki, Şubat 2019 itibarıyla yalnızca 17 tanesi keşfedilmiştir:[2]

atama Sınıf Diam. referanslar
246 Asporina Ana Kuşak 50.891 km MPC · JPL
289 Nenetta Ana Kuşak 37.586 km MPC · JPL
446 Aeternitas Ana Kuşak 53.562 km MPC · JPL
863 Benkoela Ana Kuşak 38.724 km MPC · JPL
1126 Otero Ana Kuşak 10.974 km MPC · JPL
1600 Vyssotsky Ana Kuşak 7.413 km MPC · JPL
1951 Lick Mars Geçişi 5.57 km MPC · JPL
2234 Schmadel Ana Kuşak 9.473 km MPC · JPL
2423 İbarruri Mars Geçişi 4.899 km MPC · JPL
2501 Lohya Ana Kuşak 10.218 km MPC · JPL
2715 Mielikki Ana Kuşak 13.252 km MPC · JPL
2732 Witt Ana Kuşak 11.001 km MPC · JPL
3352 McAuliffe Amor 2.1 km MPC · JPL
4142 Dersu-Uzala Mars Geçişi 7.1 km MPC · JPL
4713 Steel Ana Kuşak 6.286 km MPC · JPL
4982 Bartini Ana Kuşak 7.975 km MPC · JPL
5641 McCleese Mars Geçişi 5.68 km MPC · JPL
Çap: yalnızca ortalama tahminler; zamanla değişebilir

Ayrıca bakınız

Kaynakça

  1. ^ P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
  2. ^ "JPL Small-Body Database Search Engine: spec. type = A (SMASSII)". JPL Solar System Dynamics. Erişim tarihi: 17 Mart 2019. 

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