タグ
名称
- グリーゼ75
- カシオペヤ座V987
- V987 Cassiopeia
- V987 Cas
- HIP 8362
- HD 10780
- HR 511
- Gliese 75
- Gl 75
- GJ 75
- BD+63 238
- LHS 1297
位置
- 星座 (con):
- 座標 (cor):
- 01:01h 47m 44.8347s, +63d 51m 09.004s (J2000, SIMBAD < ICRS)
- 02:01h 44m 06.34s, +63d 36m 24.5s (B1950, SIMBAD < FK4)
- 固有運動 (pm):
- 01:582.03 mas/yr, -246.86 mas/yr (SIMBAD)
- 視線速度 (rv):
- 01:2.8±2 km/s (SIMBAD)
- 02:4.0 km/s (Cat-GJ 1991)
- 年周視差 (plx):
- 01:100.24±0.68 mas (SIMBAD)
- 02:97.2±4.6 mas (Cat-GJ 1991)
- 03:114±6 mas (Johnson & Wright 1983)
- 距離 (dis):
- 01:9.98±0.07 pc (C:plx01, SIMBAD)
- 02:32.54±0.22 ly (C:plx01, SIMBAD)
連星
測光
- スペクトル型 (sp):
- 01:K0V (SIMBAD)
- 02:K0V (Cat-GJ 1991)
- 03:K0V (Cat-HIP 1997)
- 04:K0V (Johnson & Wright 1983)
- 05:K0V (Boyajian et al. 2008)
- 05:K0V (Soubiran et al. 2008)
- 見かけの等級V (v):
- 01:5.63 (SIMBAD)
- 02:5.63 (Cat-GJ 1991)
- 03:5.63 (Cat-HIP 1997)
- 04:5.63 (Boyajian et al. 2008)
- 見かけの等級B (b):
- 01:6.44 (SIMBAD)
- 02:6.44 (C:v02+bv02, Cat-GJ 1991)
- 色指数B-V (bv):
- 01:0.81 (C:v01+b01, SIMBAD)
- 02:0.81 (Cat-GJ 1991)
- 03:0.804±0.010 (Cat-HIP 1997)
- 04:0.81 (Baliunas et al. 1996)
- 05:0.81 (Boyajian et al. 2008)
- 06:0.778 (Soubiran et al. 2008)
- 変光星型 (vrt):
- 01:BY Dra (Cat-GCVS 2007-2009)
- 変光範囲 (vrr):
- 01:5.630 0.05 (Cat-GCVS 2007-2009)
- 変光周期 (vrp):
- 01:21.7 days (Cat-GCVS 2007-2009)
物理的性質
- 絶対等級V (abs):
- 01:5.64 (C:plx01+v01, SIMBAD)
- 02:5.57 (Cat-GJ 1991)
- 03:5.625 (Soubiran et al. 2008)
- 全波長の光度 (lum):
- 00:0.49 Lsol (Boyajian et al. 2008)
- 可視光での明るさ (br):
- 00:0.474 sol (C:abs01, SIMBAD)
- 00:1 / 2.11 sol (C:abs01, SIMBAD)
- 質量 (mas):
- 00:0.846 -0.020/+0.036 Msol (Takeda et al. 2007)
- 半径 (rad):
- 00:0.85 Rsol (Johnson & Wright 1983)
- 00:0.85±0.02 Rsol (Takeda et al. 2007)
- 00:0.819±0.024 Rsol (Boyajian et al. 2008)
- 温度 (tmp):
- 00:4959 L (Johnson & Wright 1983)
- 00:5350 K (Luck & Heiter 2006)
- 00:5350±76 K (Boyajian et al. 2008)
- 00:5359 K (Soubiran et al. 2008)
- 重力 (grv):
- 00:log g 4.50 (Luck & Heiter 2006)
- 00:log g 4.52±0.03 (Takeda et al. 2007)
- 000:log g 4.44 (Soubiran et al. 2008)
- 重元素比 (met):
- 00:[Fe/H] 0.02 (Luck & Heiter 2006)
- 00:[Fe/H] 0.02 (Soubiran et al. 2008)
- 自転速度 (rtv):
- 自転周期 (rtp):
- 00:23 days (Baliunas et al. 1996)
- 彩層の活動 (cha):
- 00:R'_HK -4.681 (Baliunas et al. 1996)
- 年齢 (age):
- 00:10.12 (4.92/) Gyr (Takeda et al. 2007)
追加情報
- E101:空間速度UVW:-26 km/s, -26 km/s, -6 km/s (Cat-GJ 1991)
- E201:見かけの等級R:5.1 (SIMBAD)
- E202:見かけの等級I:4.8 (SIMBAD)
- E203:見かけの等級J:4.596±0.238 (SIMBAD)
- E204:見かけの等級H:4.133±0.200 (SIMBAD)
- E205:見かけの等級K:4.014±0.262 (SIMBAD)
- E206:色指数U-B:0.40 (Cat-GJ 1991)
- E207:色指数R-I:0.26 (Cat-GJ 1991)
- E208:色指数V-I:0.81 (Cat-HIP 1997)
- E300:重元素比[C/H]:-0.14±0.10 (Luck & Heiter 2006)
- E300:重元素比[O/H]:-0.19±0.10 (Luck & Heiter 2006)
- E300:リチウム:-1.00 (Luck & Heiter 2006)
- E300:微視的乱流:0.60 km/s (Luck & Heiter 2006)
- E300:巨視的乱流:2.50 km/s (Luck & Heiter 2006)
注釈
最終更新:2009年11月29日 01:21