47 Ursae Majoris
47 Ursae Majoris
Data pengamatan Epos J2000.0 Ekuinoks J2000.0
Rasi bintang Ursa Major
Asensio rekta 10j 59m 27.973d [ 1]
Deklinasi +40° 25′ 48.92″[ 1]
Magnitudo tampak (V) +5.03
Ciri-ciri
Kelas spektrum G1V
Indeks warna U−B0.13
Indeks warna B−V0.61
Astrometri Kecepatan radial (Rv ) +12.6 km/s Gerak diri (μ) RA: ± 0,22[ 1] mdb /thn Dek.: ± 0,20[ 1] mdb /thn Paralaks (π) ± 0,25[ 1] mdb Jarak 45,9 ± 0,2 tc pc ) Magnitudo mutlak (MV ) 4.41[ 2] Detail Massa 1.08[ 3] M ☉ Radius 1.172 ± 0.111 [ 4] R ☉ Luminositas 1.48 L ☉ Gravitasi permukaan (log g ) 4.377[ 3] Suhu 5887 ± 3.8 [ 5] K Metalisitas 110% solar[ 3] Kecepatan rotasi (v sin i ) 2.80[ 3] km /s Usia 6.03[ 6] gigatahun Penamaan lain Chalawan,
BD +41°2147,
FK5 1282,
GC 15087,
GCTP 2556.00,
Gliese 407,
HD 95128,
HIP 53721,
HR 4277,
LTT 12934,
SAO 43557
Referensi basis data SIMBAD The star planet b planet c planet d Exoplanet Archive data ARICNS data Extrasolar Planets data
47 Ursae Majoris (disingkat 47 UMa ), umumnya disebut Chalawan ,[ 7] [ 8] bintang katai kuning yang berjarak sekitar 46 tahun cahaya [ 1] konstelasi Ursa Major . Hingga 2011 [ update] planet ekstrasurya (yang dinamakan 47 Ursae Majoris b , c dan d ; dua yang pertama kemudian dinamai Taphao Thong dan Taphao Kaew) dipercayai mengelilingi bintang tersebut.
Referensi
1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction" . Astronomy and Astrophysics . 474 (2): 653– 664. arXiv :0708.1752 Bibcode :2007A& A...474..653V . doi :10.1051/0004-6361:20078357 . Vizier catalog entry ↑ Elgarøy, Øystein; Engvold, Oddbjørn; et al. (March 1999), "The Wilson-Bappu effect of the MgII K line - dependence on stellar temperature, activity and metallicity", Astronomy and Astrophysics , 343 : 222– 228, Bibcode :1999A& A...343..222E 1 2 3 4
"Stars Table" . Catalog of Nearby Exoplanets asli tanggal 17 October 2008. Diakses tanggal 2008-10-04 . ↑
G. T. van Belle; K. von Braun (2009). "Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars". Astrophysical Journal 694 (2): 1085– 1098. arXiv :0901.1206 Bibcode :2009ApJ...694.1085V . doi :10.1088/0004-637X/694/2/1085 . ↑
V. V. Kovtyukh; Soubiran, C.; et al. (2003). "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios". Astronomy and Astrophysics 411 (3): 559– 564. arXiv :astro-ph/0308429 Bibcode :2003A& A...411..559K . doi :10.1051/0004-6361:20031378 . ↑
C. Saffe; Gómez, M.; et al. (2005). "On the Ages of Exoplanet Host Stars". Astronomy and Astrophysics 443 (2): 609– 626. arXiv :astro-ph/0510092 Bibcode :2005A& A...443..609S . doi :10.1051/0004-6361:20053452 . ↑ "IAU Catalog of Star Names" . Diakses tanggal 28 July 2016 .↑ Thai Astronomical Society, Chalawan, Taphao Thong, Taphao Kaew – First Thai Exoworld Names
