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Table 1

Stellar parameters for HD 81817.

Parameter HD 81817 Ref.
Spectral type K3 III hipparcos (ESA 1997)
mv [mag] 4.426 ± 0.001 van Leeuwen (2007)
B − V [mag] 1.488 ± 0.001 van Leeuwen (2007)
π [mas] 3.72 ± 0.29 Gaia Collaboration (2018)
[Fe∕H] [dex] − 0.17 ± 0.1 This work
0.09 Soubiran et al. (2016)
Teff [K] 4140 ± 55 This work
log g [cgs] 1.3 ± 0.2 This work
vmicro [km s−1] 2.3 ± 0.2 This work
L [L] 1822.9 This work
M [M] 4.3 ± 0.5 This work
R [R] 83.8 ± 7.8 This work
Age [Gyr] 0.15 ± 0.04 This work
vrot sin i [km s−1] 4.7 ± 0.1 This work
4.9 Gȩbocki & Gnaciński (2005)
5.5 ± 0.1 de Medeiros & Mayor (1999)
Prot/sin i [days] 801 ~ 1008 This work

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