All names: SDSS J230408.42+075524.93, Gaia DR3 2713527043026574080, Gaia DR2 2713527043026574080, SDSS J230408.42+075524.9, Gaia EDR3 2713527043026574080, SDSS J230408.41+075524.9, GALEX J230408.3+075524
Parameter | Unit | Gaia EDR3 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|
Right ascension | 23 04 08.49 (0.3) | 23 04 08.42 | 23 04 08.48 (0.5) | 23 04 08.39 (0.3) | |||||
Declination | 07 55 25.34 (0.3) | 07 55 24.94 | 07 55 25.32 (0.4) | 07 55 24.74 (0.3) | |||||
Spectral type | DA | DA | DA | DA | |||||
Effective temperature | [K] | 6731.0 | 7221.0 (89) | ||||||
log(g) | [cgs] | 8.08 | 7.76 (0.2) | ||||||
Mass | [M☉] | 0.638 | 0.441 (0.07) | ||||||
log(Luminosity) | [L☉] | ||||||||
Cooling age | [Gyr] | 1.9160 | |||||||
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] | 5.80 (0.4) | 6.57 (0.6) | 5.80 (0.4) | |||||
Distance | [pc] | 172.36 (12) | 152.24 (14) | 172.36 (12) | |||||
Composition | H | ||||||||
Proper motion (right ascension) | [mas/yr] | 93.47849445 (0.4) | 92.35946023 (0.8) | 93.478 (0.4) | |||||
Proper motion (declination) | [mas/yr] | 37.14849624 (0.4) | 35.79857238 (0.7) | 37.148 (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 | 20.33 (0.05) | 20.37 (0.05) | 20.32 (0.05) | ||||||
g magnitude | 19.68 (0.01) | 19.78 (0.03) | 19.68 (0.01) | ||||||
r magnitude | 19.52 (0.02) | 19.67 (0.02) | 19.52 (0.02) | ||||||
i magnitude | 19.46 (0.02) | 19.59 (0.03) | 19.45 (0.02) | ||||||
z magnitude | 19.35 (0.07) | 19.52 (0.07) | 19.34 (0.07) | ||||||
G magnitude | 19.62 (0.07) | 19.67 | 19.62 (0.005) | ||||||
BP magnitude | 19.83 (0.07) | 19.81 | |||||||
RP magnitude | 19.25 (0.05) | 19.15 | |||||||
Pan g magnitude | |||||||||
Pan r magnitude | |||||||||
Pan i magnitude | |||||||||
Pan z magnitude | |||||||||
Pan y magnitude | |||||||||
E(B-V) | 0.031 |
* 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.