All names: SDSS J080456.47+194242.3, SDSS J080456.46+194242.0, GALEX J080456.4+194242, Gaia DR2 669733736733845504, Gaia DR3 669733736733845504, SDSS J080456.47+194242.2, SDSS J080456.46+194242.2, Gaia EDR3 669733736733845504
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 04 56.43 (0.1) | 08 04 56.46 | 08 04 56.43 (0.1) | 08 04 56.43 | 08 04 56.48 (0.1) | 08 04 56.47 | |||||
Declination | 19 42 41.51 (0.07) | 19 42 42.05 | 19 42 41.54 (0.07) | 19 42 41.51 | 19 42 42.51 (0.07) | 19 42 42.26 | |||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 9655.0 | 9701.0 (162) | 10058.0 (30) | |||||||
log(g) | [cgs] | 7.47 | 7.50 (0.04) | 8.39 (0.03) | |||||||
Mass | [M☉] | 0.343 | 0.355 (0.02) | 0.835 (0.02) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.3806 | |||||||||
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] | 6.71 (0.1) | 6.62 (0.1) | 6.71 | 6.71 (0.1) | ||||||
Distance | [pc] | 149.02 (2) | 151.16 (3) | 149.02 | 149.02 (2) | ||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -39.96200845 (0.1) | -40.15207644 (0.2) | -39.962 (0.1) | |||||||
Proper motion (declination) | [mas/yr] | -62.75013483 (0.08) | -62.66053256 (0.1) | -62.75 (0.07) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | 17.30 (0.02) | ||||||||||
H magnitude | 17.21 (0.04) | ||||||||||
K magnitude | 17.35 (0.07) | ||||||||||
u magnitude | 17.91 (0.01) | 17.91 (0.01) | 17.83 (0.02) | ||||||||
g magnitude | 17.45 (0.005) | 17.45 (0.005) | 17.40 (0.01) | ||||||||
r magnitude | 17.52 (0.006) | 17.52 (0.006) | 17.52 (0.01) | ||||||||
i magnitude | 17.64 (0.007) | 17.64 (0.007) | 17.59 (0.01) | ||||||||
z magnitude | 17.80 (0.02) | 17.80 (0.02) | 17.80 (0.02) | ||||||||
G magnitude | 17.45 (0.01) | 17.48 | 17.45 | 17.45 (0.003) | |||||||
BP magnitude | 17.51 (0.01) | 17.51 | |||||||||
RP magnitude | 17.35 (0.01) | 17.33 | |||||||||
Pan g magnitude | 17.44 (0.002) | ||||||||||
Pan r magnitude | 17.53 (0.004) | ||||||||||
Pan i magnitude | 17.66 (0.005) | ||||||||||
Pan z magnitude | 17.82 (0.006) | ||||||||||
Pan y magnitude | 17.93 (0.01) | ||||||||||
E(B-V) | 0.006 |
* 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.