TRAPPIST-1h

TRAPPIST-1h, juga dikenal sebagai 2MASS J23062928-0502285 h, adalah sebuah planet ekstrasurya yang mengorbit di sekitar bintang katai ultradingin TRAPPIST-1 sekitar 39 tahun cahaya (12 parsec) dari Bumi dalam rasi bintang Akuarius. Itu adalah salah satu dari empat eksoplanet baru yang ditemukan mengorbit di bintang ini dengan menggunakan pengamatan dari Spitzer Space Telescope.[4][5]

TRAPPIST-1h
Penggambaran ilustrator atas TRAPPIST-1h. (Februari 2018)
Penemuan
Tanggal penemuan2017
Transit
Ciri-ciri orbit
Apastron0,06229 +0,0000031−0,000004 AU
Periastron0,06158 +0,0000034−0,000004 AU
0,06193488 ± 8,0 × 10−7 AU[1]
Eksentrisitas0,00567 (±0,00121)[1]
18,868+0,008
−0,009[1] h
Inklinasi89,796 (± 0,023)[2]
BintangTRAPPIST-1[3]
Ciri-ciri fisik
Jari-jari rata-rata
0,773 +0,026−0,027[1] R⊕
Massa0,331 +0,056−0,049[1] M🜨
Massa jenis rata-rata
3,97 +0,645−0,563 g/cm3 g cm−3
0,555 +0,088−0,076[1] g
Suhu1.692 ± 24 K (1.418,8 ± 24,0 °C; 2.585,9 ± 43,2 °F)(kesetimbangan)[2]
    Penggambaran ilustrator atas TRAPPIST-1h.

    Referensi
    1. Grimm, Simon L.; Demory, Brice-Olivier; Gillon, Michael; Dorn, Caroline; Agol, Eric; Burdanov, Artem; Delrez, Laetitia; Sestovic, Marko; Triaud, Amaury H.M.J.; Turbet, Martin; Bolmont, Emeline; Caldas, Anthony; de Wit, Julien; Jehin, Emmanuel; Leconte, Jeremy; Raymond, Sean N.; Van Grootel, Valerie; Burgasser, Adam J.; Carey, Sean; Fabrycky, Daniel; Heng, Kevin; Hernandez, David M.; Ingalls, James G.; Lederer, Susan; Selsis, Franck; Queloz, Didier (2018). "The nature of the TRAPPIST-1 exoplanets". Astronomy & Astrophysics. 613: A68. arXiv:1802.01377 . Bibcode:2018A&A...613A..68G. doi:10.1051/0004-6361/201732233.
    2. Delrez, Laetitia; Gillon, Michael; H.M.J, Amaury; Brice-Oliver Demory, Triaud; de Wit, Julien; Ingalls, James; Agol, Eric; Bolmont, Emeline; Burdanov, Artem; Burgasser, Adam J.; Carey, Sean J.; Jehin, Emmanuel; Leconte, Jeremy; Lederer, Susan; Queloz, Didier; Selsis, Franck; Grootel, Valerie Van (2018). "Early 2017 observations of TRAPPIST-1 with Spitzer". Monthly Notices of the Royal Astronomical Society. 475 (3): 3577–3597. arXiv:1801.02554 . Bibcode:2018MNRAS.475.3577D. doi:10.1093/mnras/sty051.
    3. Van Grootel, Valerie; Fernandes, Catarina S.; Gillon, Michaël; Jehin, Emmanuel; Scuflaire, Richard; et al. (2018). "Stellar parameters for TRAPPIST-1". The Astrophysical Journal. 853: 30. arXiv:1712.01911 . Bibcode:2018ApJ...853...30V. doi:10.3847/1538-4357/aaa023.
    4. "Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1". SpaceRef. 22 February 2017. Diakses tanggal 11 February 2017.
    5. NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star. Siaran pers.
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.