All names: SDSS J125642.38+204201.8, SDSS J125642.38+204201.7, GALEX J125642.4+204201, Gaia DR2 3942571792073712384, Gaia EDR3 3942571792073712384, Gaia DR3 3942571792073712384, SDSS J125642.37+204201.7
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 56 42.35 (0.4) | 12 56 42.38 | 12 56 42.35 (0.5) | 12 56 42.39 (0.4) | 12 56 42.38 | |||||
Declination | 20 42 01.61 (0.2) | 20 42 01.71 | 20 42 01.62 (0.3) | 20 42 01.87 (0.2) | 20 42 01.75 | |||||
Spectral type | DA+M | DA+M | DA+M | DA+MS | ||||||
Effective temperature | [K] | 11961.0 | 19866.0 (517) | |||||||
log(g) | [cgs] | 7.63 | 7.50 (0.1) | |||||||
Mass | [M☉] | 0.416 | ||||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.2367 | ||||||||
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] | 2.53 (0.5) | 1.93 (0.6) | 2.53 (0.5) | ||||||
Distance | [pc] | 395.40 (75) | 518.24 (155) | 395.40 (75) | ||||||
Composition | H | |||||||||
Proper motion (right ascension) | [mas/yr] | -31.14265308 (0.5) | -31.00062889 (1) | -31.143 (0.5) | ||||||
Proper motion (declination) | [mas/yr] | -16.096659 (0.5) | -15.98924099 (0.8) | -16.097 (0.5) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | WDMS | WDMS | ||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 19.59 (0.03) | 19.59 (0.03) | 19.59 (0.04) | |||||||
g magnitude | 19.57 (0.01) | 19.57 (0.01) | 19.62 (0.02) | |||||||
r magnitude | 19.92 (0.02) | 19.92 (0.02) | 19.95 (0.03) | |||||||
i magnitude | 19.99 (0.03) | 19.99 (0.03) | 20.01 (0.03) | |||||||
z magnitude | 19.74 (0.08) | 19.74 (0.08) | 19.77 (0.08) | |||||||
G magnitude | 19.80 (0.04) | 19.84 | 19.80 (0.004) | |||||||
BP magnitude | 19.75 (0.04) | 19.71 | ||||||||
RP magnitude | 19.60 (0.05) | 19.59 | ||||||||
Pan g magnitude | 19.64 (0.01) | |||||||||
Pan r magnitude | 19.98 (0.02) | |||||||||
Pan i magnitude | 20.04 (0.01) | |||||||||
Pan z magnitude | 19.87 (0.03) | |||||||||
Pan y magnitude | 19.69 (0.03) | |||||||||
E(B-V) | 0.025 |
* 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.