Open Access

Table 1

Stellar properties of G 9–40.

Parameter Value Source
Coordinates and main identifiers
Name G 9–40 Giclas et al. (1971)
NLTT 20661 Luyten (1979)
K2-313 Stef20
α 08:58:52.33 Gaia EDR3
δ +21:04:34.2 Gaia EDR3
EPIC ID 212048748 EPIC
TIC ID 203214081 TIC
Karmn ID J08588+210 AF15
Magnitudes
V (mag) 13.82 ± 0.04 UCAC4
R (mag) 12.68 ± 0.07 UCAC4
G (mag) 12.7160 ± 0.0028 Gaia EDR3
J (mag) 10.06 ± 0.02 2MASS
H (mag) 9.43 ± 0.02 2MASS
K (mag) 9.19 ± 0.02 2MASS
Parallax and kinematics
π (mas) 35.930 ± 0.025 Gaia EDR3
d (pc) 27.832 ± 0.019 Gaia EDR3
µα cos δ (mas yr−1) +175.740 ± 0.027 Gaia EDR3
µδ (mas yr−1) −318.332 ± 0.020 Gaia EDR3
U (km s−1) −7.78 ± 0.06 This work
V (km s−1) −5.98 ± 0.84 This work
W (km s−1) −9.18 ± 0.71 This work
Photospheric parameters
Teff (K) 3395 ± 51 This work
log g (dex) 4.84 ± 0.04 This work
[Fe/H] (dex) −0.07 ± 0.16 This work
Physical parameters
M (M) 0.2952 ± 0.0136 This work
R (R) 0.3026 ± 0.0095 This work
L (10−4 L) 109.6 ± 1.9 This work
Prot (d) 30 ± 1 Stef20

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