Luyten b

Luyten b
Penemuan
Ditemukan olehAstudillo-Defru et al., HARPS[1]
Tanggal penemuan17 Maret 2017
Kecepatan radial[1]
Ciri-ciri orbit
Apastron0.100211 (± 0.007288) AU
Periastron0.081991 (± 0.007288) AU
0.091101 (± 0.00002)[1] AU
Eksentrisitas0.10 (± 0.08)[1]
18.6498 (± 0.006)[1] d
Inklinasinull
BintangBintang Luyten
Ciri-ciri fisik
Jari-jari rata-rata
~1.35 R⊕
Massa2.89 (± 0.26)[1] M🜨
Massa jenis rata-rata
6,45 g/cm3
Suhu259 K (−14 °C; 7 °F)[2]

Luyten b (lebih dikenal sebagai Gliese 273b) adalah planet ekstrasurya yang dikonfirmasi, kemungkinan berbatu, yang mengorbit di dalam zona layak huni bintang Luyten katai merah terdekat. Ini adalah salah satu planet yang paling mirip Bumi yang pernah ditemukan dan merupakan planet ekstrasurya yang berpotensi layak huni terdekat kelima yang diketahui, pada jarak 12 tahun cahaya. Hanya Proxima Centauri b, Bintang Barnard b, Ross 128 b, dan Gliese 1061 d yang lebih dekat. Ditemukan bersama Gliese 273c pada Juni 2017, Luyten b adalah Bumi-Super dengan massa sekitar 2,89 kali massa Bumi dan hanya menerima 6% lebih banyak cahaya bintang daripada Bumi, menjadikannya salah satu kandidat terbaik untuk kelayakhunian.[1] Pada Oktober 2017 dan 2018, organisasi nirlaba METI (Messaging Extraterrestrial Intelligence) mengirim pesan yang berisi lusinan komposisi musik pendek dan "tutorial" ilmiah tentang planet ini dengan harapan dapat menghubungi peradaban luar bumi yang potensial.[3]

Referensi

  1. ^ a b c d e f g Astudillo-Defru, Nicola; Forveille, Thierry; Bonfils, Xavier; Ségransan, Damien; Bouchy, François; Delfosse, Xavier; et al. (2017). "The HARPS search for southern extra-solar planets. XLI. A dozen planets around the M dwarfs GJ 3138, GJ 3323, GJ 273, GJ 628, and GJ 3293". Astronomy and Astrophysics. 602. A88. arXiv:1703.05386 alt=Dapat diakses gratis. Bibcode:2017A&A...602A..88A. doi:10.1051/0004-6361/201630153. 
  2. ^ "PHL's calculators". Diarsipkan dari versi asli tanggal 2019-05-11. Diakses tanggal 2022-06-19. 
  3. ^ "Sonar Calling". Website. Advanced Music SL. Diakses tanggal 6 May 2019. 
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