タグ
名称
- おおぐま座47番星
- 47 Ursae Majoris
- 47 UMa
- HIP 53721
- HD 95128
- HR 4277
- GJ 407
- BD+41 2147
位置
- 星座 (con):
- 座標 (cor):
- 01:10h 59m 27.9737s, +40d 25m 48.925s (J2000, SIMBAD < ICRS)
- 02:10h 56m 40.34s, +40d 41m 51.9s (B1950, SIMBAD < FK4)
- 固有運動 (pm):
- 01:-315.92 mas/yr, 55.15 mas/yr (SIMBAD)
- 視線速度 (rv):
- 01:12.6±0.9 km/s (SIMBAD)
- 年周視差 (plx):
- 01:71.04±0.66 mas (SIMBAD)
- 02:81 mas (Heintz 1993)
- 距離 (dis):
- 01:14.08±0.13 pc (C:plx01, SIMBAD)
- 02:45.9±0.4 ly (C:plx01, SIMBAD)
- 03:14.08±0.13 pc (Klaus et al. 1997 < HIP)
測光
- スペクトル型 (sp):
- 01:G1V (SIMBAD)
- 02:G0V (Garcia 1989)
- 見かけの等級V (v):
- 01:5.10 (SIMBAD)
- 02:5.03 (Fischer et al. 2002)
- 見かけの等級B (b):
- 色指数 B-V (bv):
- 01:0.56 (C:v01+b01, SIMBAD)
- 02:0.624 (Fischer et al. 2002)
- 変光星型 (vrt):
- 変光範囲 (vrr):
- 01:<0.001 (Henry et al. 2000)
- 変光幅 (vra):
- 変光周期 (vrp):
物理的性質
- 絶対等級V (abs):
- 01:4.40 (Edvardsson et al. 1993)
- 02:4.31 (Klaus et al. 1997)
- 全波長の光度 (lum):
- 01:1.26±0.04 Lsol (C:E301, Klaus et al. 1997, s4.71)
- 可視光での明るさ (br):
- 質量 (mas):
- 01:1.03±0.05 Msol (EPE < Klaus et al. 1997)
- 02:1.03±0.05 Msol (=mas01, Klaus et al. 1997)
- 04:1.08 Msol (Butler et al. 2006)
- 03:1.063 -0.029/+0.022 Msol (Takeda et al. 2007)
- 半径 (rad):
- 01:1.24±0.04 Rsol (EPE)
- 02:1.24±0.04 Rsol (Takeda et al. 2007)
- 03:1.31±0.03 Rsol (van Belle & von Braun 2009)
- 温度 (tmp):
- 03:5892±70 K (EPE < Klaus et al. 1997)
- 01:5882 K (Butler & Marcy 1996)
- 04:5892±70 K (=tmp03, Klaus et al. 1997)
- 02:5780 K (Fischer et al. 2002)
- 05:5882±44 K (Butler et al. 2006)
- 06:5807±50 K (van Belle & von Braun 2009)
- 重力 (grv):
- 01:log g 4.31 (Hearnshaw 1974)
- 02:log g 4.31 (Blackwell & Lynas-gray 1994)
- 03:log g 4.09 (Gratton et al. 1996)
- 04:log g 4.45 (Gonzalez 1997b)
- 05:log g 4.55 (Gonzalez 1997b)
- 06:log g 4.27±0.1 (Klaus et al. 1997)
- 08:log g 4.377±0.060 (Butler et al. 2006)
- 07:log g 4.31 -0.04/+0.03 (Takeda et al. 2007)
- 重元素比 (met):
- 01:[Fe/H] +0.00±0.07 (EPE < Klaus et al. 1997)
- 02:[Fe/H] +0.01 (Blackwell & Lynas-Gray 1994)
- 03:[Fe/H] +0.00±0.07 (=met01, Klaus et al. 1997)
- 04:[Fe/H] +0.01 (Fischer et al. 2002)
- 05:[Fe/H] +0.043±0.030 (Butler et al. 2006)
- 自転速度 (rtv):
- 01:v sin i 3 km/s (Soderblom 1983)
- 03:v sin i 2.0 km/s (Klaus et al. 1997)
- 04:v 2.9 km/s (Klaus et al. 1997)
- 02:v sin i 1.85 km/s (Fischer et al. 2002)
- 05:v sin i 2.8±0.5 km/s (Butler et al. 2006)
- 自転周期 (rtp):
- 01:24 days (Noyes et al. 1984)
- 01:16 days (Soderblom 1985)
- 彩層の活動 (cha):
- 01:log R'_HK -5.26 (Duncan 1981)
- 02:log R'_HK -5.12 (Fischer et al. 2002)
- 年齢 (age):
- 01:6.9 Gyr (Edvardsson et al. 1993)
- 02:7 Gyr (Baliunas et al. 1995)
- 03:4-8 Gyr (Butler & Marcy 1996)
- 04:7.3±1.9 Gyr (Klaus et al. 1997)
- 05:6.48 -1.04/+1.44 Gyr (Takeda et al. 2007)
追加情報
- E301:絶対輻射等級:4.21±0.06 (Klaus et al. 1997)
注釈
最終更新:2009年11月16日 14:50