All names: GALEX J232110.3+191430, Gaia DR3 2825005328672819072, LAMOST J232110.32+191431.0, SDSS J232110.36+191430.5, LAMOST J232110.36+191430.5, SDSSJ232110.36+191430.5, Gaia DR2 2825005328672819072
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 23 21 10.37 | 23 21 10.36 (0.05) | ||
Declination | 19 14 30.52 | 19 14 30.55 (0.04) | ||
Spectral type | sdB | sdB | ||
Effective temperature | [K] | 29498.0 (337) | ||
log(g) | [cgs] | 5.42 (0.06) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 0.31 (0.1) | 0.29 (0.06) | |
Distance | [pc] | 3218.54 (1262) | 3403.68 (734) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | -3.536 (0.2) | -3.54 (0.06) | |
Proper motion (declination) | [mas/yr] | -11.726 (0.1) | -11.769 (0.05) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | ||||
V magnitude | ||||
R magnitude | ||||
I magnitude | ||||
J magnitude | ||||
H magnitude | ||||
K magnitude | ||||
u magnitude | 16.39 (0.007) | 16.40 (0.02) | ||
g magnitude | 16.43 (0.003) | 16.43 (0.02) | ||
r magnitude | 16.86 (0.004) | 16.88 (0.01) | ||
i magnitude | 17.15 (0.005) | 17.16 (0.01) | ||
z magnitude | 17.39 (0.01) | 17.39 (0.02) | ||
G magnitude | 16.69 (0.001) | 16.66 (0.003) | ||
BP magnitude | 16.52 (0.005) | |||
RP magnitude | 16.86 (0.005) | |||
Pan g magnitude | 16.51 (0.003) | |||
Pan r magnitude | 16.86 (0.003) | |||
Pan i magnitude | 17.19 (0.007) | |||
Pan z magnitude | 17.42 (0.006) | |||
Pan y magnitude | 17.54 (0.008) | |||
E(B-V) | 0.053 |
* 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.