タグ
名称
- ラランド21185
- Lalande 21185
- HIP 54035
- HD 95735
- GJ 411
位置
- 星座:
- 座標 (cor):
- 01:11h 03m 20.1939s, +35d 58m 11.547s (SIMBAD < ICRS)
- 固有運動 (pm):
- 01:580.46 mas/yr, -4769.95 mas/yr (SIMBAD)
- 視線速度 (rv):
- 01:85.0±0.9 km/s (SIMBAD)
- 年周視差 (plx):
- 01:392.52±0.91 mas (SIMBAD)
- 02:393.42±0.70 mas (RECONS)
- 03:397.30±1.80 mas (Jenkins et al. 2009)
- 距離 (dis):
- 01:2.548±0.006 pc (C:plx01, SIMBAD)
- 02:2.542±0.005 pc (C:plx02, RECONS)
- 03:8.310±0.019 ly (C:plx01, SIMBAD)
- 04:8.291±0.015 ly (C:plx02, RECONS)
恒星
- スペクトル型 (sp):
- 01:M2V (SIMBAD)
- 02:M2.0V (RECONS)
- 03:M1.5V (Segransan et al. 2003)
- 06:M2V (Cenarro et al. 2007)
- 05:M2V (Soubiran et al. 2008)
- 04:M2.0 (Jenkins et al. 2009)
- 見かけの等級 V (v):
- 01:7.49 (SIMBAD)
- 02:7.47 (RECONS)
- 03:7.49 (Jenkins et al. 2009)
- 見かけの等級B:
- 色指数 B-V (bv):
- 01:1.51 (C:, SIMBAD)
- 02:1.51 (Baliunas et al. 1996)
- 03:1.507 (Soubiran et al. 2008)
- 変光星型 (vrt):
- 変光範囲 (vrr):
- 変光幅 (vra):
物理的性質
- 絶対等級 (abs):
- 01:10.46 (C:plx01+v01, SIMBAD)
- 02:10.44 (RECONS)
- 03:10.347 (Soubiran et al. 2008)
- 全波長の光度 (lum):
- 01:0.022 Lsol (Leggett et al.1996)
- 02:~0.025 Lsol (C:rad01+tmp01, Johnson & Wright 1983)
- 03:0.021±0.005 Lsol (C:rad03+tmp03, Leggett et al.1996)
- 04:0.023±0.002 Lsol (C:rad04+tmp04, Segransan et al. 2003)
- 可視光での明るさ (br):
- 03:5.6e-3 Bsol (C:abs01, SIMBAD)
- 04:5.7e-3 Bsol (C:abs02, RECONS)
- 05:6.2e-3 Bsol (C:abs03, Soubiran et al. 2008)
- 01:1 / 179 Bsol (C:abs01, SIMBAD)
- 02:1 / 175 Bsol (C:abs02, RECONS)
- 06:1 / 161 Bsol (C:abs03, Soubiran et al. 2008)
- 質量 (mas):
- 01:0.46 Msol (RECONS)
- 02:0.4 Msol (Leggett et al.1996)
- 03:0.403±0.020 Msol (Segransan et al. 2003)
- 04:0.421±0.017 Msol (Jenkins et al. 2009)
- 半径 (rad):
- 01:0.46 Rsol (Johnson & Wright 1983)
- 02:(2.78±0.08)e8 m (Leggett et al.1996)
- 03:0.399±0.011 Rsol (C:rad02, Leggett et al.1996)
- 04:0.393±0.008 Rsol (Segransan et al. 2003)
- 温度 (tmp):
- 01:3383 K (Johnson & Wright 1983)
- 02:3400 K (Leggett et al.1996)
- 03:3500±150 K (Leggett et al.1996)
- 04:3570±42 K (Segransan et al. 2003)
- 09:3828 K (Cenarro et al. 2007)
- 05:3530 K (Gautier et al. 2007)
- 06:3469 K (Gautier et al. 2007,*T_IRFM)
- 08:3713 K (Soubiran et al. 2008)
- 07:3490 K (Jenkins et al. 2009)
- 重力 (grv):
- 01:log g 4.9 (Leggett et al.1996)
- 02:log g 4.85±0.03 (Segransan et al. 2003)
- 04:log g 4.90 (Cenarro et al. 2007)
- 03:log g 4.86 (Soubiran et al. 2008)
- 重元素比 (met):
- 01:[Fe/H] -0.5 (Leggett et al.1996)
- 04:[Fe/H] -0.20 (Cenarro et al. 2007)
- 03:[Fe/H] -0.31 (Soubiran et al. 2008)
- 02:[Fe/H] -0.33 (Jenkins et al. 2009)
- 自転速度 (rtv):
- 01:<2.9 km/s (Jenkins et al. 2009)
- 自転周期 (rtp):
- 01:53 days (Baliunas et al. 1996)
- 02:54.7 days (Olah et al. 2009)
- 彩層の活動 (cha):
- 01:log R'_HK -5.451 (Baliunas et al. 1996)
- 年齢
追加データ
- E201:活動サイクル:3.4-3.9 yr, 11 yr (Olah et al. 2009)
- E202:見かけの等級R:6.6 (SIMBAD)
- E203:見かけの等級I:5.8 (SIMBAD)
- E204:見かけの等級J:4.203±0.242 (SIMBAD)
- E205:見かけの等級J:4.20 (Jenkins et al. 2009)
- E206:見かけの等級H:3.640±0.202 (SIMBAD)
- E207:見かけの等級H:3.64 (Jenkins et al. 2009)
- E208:見かけの等級K:3.254±0.306 (SIMBAD)
- E209:見かけの等級K:3.22 (Jenkins et al. 2009)
注釈
最終更新:2009年11月16日 03:15