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Table 1
Basic stellar properties of Pollux (β Gem).
Parameter | Value | Reference |
|
||
HD number | 62 509 | – |
Spectral type | K0 III | 1 |
Effective temperature Teff | 4904 ± 50 K | 2 |
Distance d | 10.36 ± 0.03 pc | 3 |
Angular diameter φ⋆ | 7.95 ± 0.09 mas | 4 |
Mass M⋆ | 1.91 ± 0.09 M⊙ | 5 |
Radius R⋆ | 8.85 ± 0.10 R⊙ | c |
[Fe/H] | 0.08 | 1 |
Escape velocity ![]() |
287 km s-1 | c |
Age | 1.2 ± 0.3 Gyr | 5 |
Soft X-ray luminosity Lx | 1027.13 erg s-1 | 7 |
Reference. (1) Gray et al. (2003); (2) Takeda et al. (2008); (3) van Leeuwen (2007); (4) Nordgren et al. (2001); (5) Hatzes et al. (2012); (6) Gray (2014); (7) Sanz-Forcada et al. (2011). “c” indicates values calculated in this work.
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