All names: TIC 229706760, GSC 04434-01366, Gaia DR3 2259626279187460608, PPMX J183140.6+701152, Gaia EDR3 2259626279187460608, Gaia DR2 2259626279187460608, USNO-B1.0 1601-00122034, HS1832+7009, UCAC3 321-58192, 2MASS J18314064+7011522, HS 1832+7009
Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|---|
Right ascension | 18 31 40.65 (0.02) | 18 31 40.60 | 18 31 40.65 (0.02) | ||
Declination | 70 11 52.29 (0.03) | 70 11 52.15 | 70 11 52.21 (0.03) | ||
Spectral type | sdB | sdB | |||
Effective temperature | [K] | 29800.0 (800) | |||
log(g) | [cgs] | 5.50 (0.1) | |||
Mass | [M☉] | ||||
log(Luminosity) | [L☉] | ||||
Cooling age | [Gyr] | ||||
log(H/He) | |||||
log(C/He) | |||||
log(Ca/He) | |||||
log(Ca/H) | |||||
Parallax | [mas] | 1.32 (0.03) | 1.28 (0.03) | 1.32 (0.03) | |
Distance | [pc] | 757.75 (15) | 781.74 (21) | 757.75 (15) | |
Composition | |||||
Proper motion (right ascension) | [mas/yr] | 0.645 (0.03) | 0.369 (0.06) | 0.645 (0.03) | |
Proper motion (declination) | [mas/yr] | 4.716 (0.04) | 4.605 (0.07) | 4.716 (0.04) | |
Variability | |||||
Magnetic | |||||
Bd | [MG] | ||||
Infrared excess (disk) | |||||
Binarity | |||||
B magnitude | |||||
V magnitude | |||||
R magnitude | 15.10 (0.08) | ||||
I magnitude | |||||
J magnitude | 15.07 (0.04) | 15.07 (0.04) | |||
H magnitude | 15.24 (0.09) | 15.24 (0.09) | |||
K magnitude | 15.30 (0.2) | 15.30 (0.2) | |||
u magnitude | |||||
g magnitude | |||||
r magnitude | |||||
i magnitude | |||||
z magnitude | |||||
G magnitude | 14.49 (0.003) | 14.51 (0.0006) | 14.49 (0.003) | ||
BP magnitude | 14.36 (0.003) | 14.32 (0.006) | |||
RP magnitude | 14.74 (0.004) | 14.74 (0.002) | |||
Pan g magnitude | 14.34 (0.006) | ||||
Pan r magnitude | 14.74 (0.001) | ||||
Pan i magnitude | 15.07 (0.001) | ||||
Pan z magnitude | 15.34 (0.001) | ||||
Pan y magnitude | 15.52 (0.006) | ||||
E(B-V) | 0.043 |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.