All names: GALEX J231207.7+203849, Gaia DR2 2837582706605526144, Gaia DR3 2837582706605526144, Gaia EDR3 2837582706605526144, SDSS J231207.75+203849.5, SDSS J231207.74+203849.6, SDSS J231207.75+203849.58
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 23 12 07.76 (0.3) | 23 12 07.75 | 23 12 07.76 (0.4) | 23 12 07.74 (0.3) | ||||||
Declination | 20 38 49.68 (0.3) | 20 38 49.61 | 20 38 49.68 (0.4) | 20 38 49.58 (0.3) | ||||||
Spectral type | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 29576.0 | 25626.0 (246) | |||||||
log(g) | [cgs] | 7.30 | 8.21 (0.04) | |||||||
Mass | [M☉] | 0.371 | 0.745 (0.03) | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.0099 | ||||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
log(C/H) | ||||||||||
log(N/H) | ||||||||||
log(O/H) | ||||||||||
log(Na/H) | ||||||||||
log(Mg/H) | ||||||||||
log(Al/H) | ||||||||||
log(Si/H) | ||||||||||
log(P/H) | ||||||||||
log(S/H) | ||||||||||
log(Sc/H) | ||||||||||
log(Ti/H) | ||||||||||
log(Cr/H) | ||||||||||
log(Mn/H) | ||||||||||
log(Fe/H) | ||||||||||
log(Ni/H) | ||||||||||
Parallax | [mas] | 0.94 (0.4) | 0.76 (0.5) | 0.94 (0.4) | ||||||
Distance | [pc] | 1063.82 (464) | 1319.56 (930) | 1063.83 (464) | ||||||
Composition | H | |||||||||
Proper motion (right ascension) | [mas/yr] | 19.01965921 (0.4) | 18.60337834 (1) | 19.02 (0.4) | ||||||
Proper motion (declination) | [mas/yr] | 6.230003837 (0.4) | 4.806891757 (0.8) | 6.23 (0.4) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 19.88 (0.04) | 19.90 (0.04) | 19.89 (0.04) | |||||||
g magnitude | 19.85 (0.02) | 19.85 (0.02) | 19.85 (0.02) | |||||||
r magnitude | 20.09 (0.02) | 20.09 (0.03) | 20.09 (0.02) | |||||||
i magnitude | 20.36 (0.04) | 20.36 (0.04) | 20.36 (0.04) | |||||||
z magnitude | 20.62 (0.2) | 20.61 (0.2) | 20.62 (0.2) | |||||||
G magnitude | 19.99 (0.06) | 20.04 | 19.99 (0.005) | |||||||
BP magnitude | 20.03 (0.06) | 19.86 | ||||||||
RP magnitude | 20.01 (0.08) | 19.97 | ||||||||
Pan g magnitude | 19.83 (0.02) | |||||||||
Pan r magnitude | 20.07 (0.03) | |||||||||
Pan i magnitude | 20.35 (0.02) | |||||||||
Pan z magnitude | 20.53 (0.09) | |||||||||
Pan y magnitude | ||||||||||
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.