All names: Gaia DR3 4578385526371529856, SDSS J181146.43+235353.2, GALEX J181146.4+235352, Gaia EDR3 4578385526371529856, Gaia DR2 4578385526371529856
Parameter | Unit | Gaia EDR3 | SDSS DR12 | Hardy et al. 2023a | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
---|---|---|---|---|---|---|---|---|---|
Right ascension | 18 11 46.43 (0.4) | 18 11 46.43 | 18 11 46.43 (0.5) | 18 11 46.43 (0.4) | 18 11 46.43 | ||||
Declination | 23 53 53.13 (0.6) | 23 53 53.26 | 23 53 53.13 (0.9) | 23 53 53.13 (0.6) | 23 53 53.15 | ||||
Spectral type | DA | DAH | DAH | DAH | |||||
Effective temperature | [K] | 18943.8 (2204) | 5911.0 | 22703.0 (1033) | |||||
log(g) | [cgs] | 8.63 (0.1) | 7.64 | 9.51 (0.2) | |||||
Mass | [M☉] | 1.0087734035945473 (0.2) | 0.398 | ||||||
log(Luminosity) | [L☉] | ||||||||
Cooling age | [Gyr] | 1.4500 | |||||||
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] | 1.80 (0.8) | 2.09 (1) | 1.80 (0.8) | |||||
Distance | [pc] | 556.82 (258) | 477.44 (275) | 556.82 (258) | |||||
Composition | H | ||||||||
Proper motion (right ascension) | [mas/yr] | 1.686424264 (0.6) | 1.434311929 (1) | 1.686 (0.6) | |||||
Proper motion (declination) | [mas/yr] | 0.087605675 (0.7) | 1.625923388 (2) | 0.088 (0.7) | |||||
Variability | |||||||||
Magnetic | |||||||||
Bd | [MG] | ||||||||
Infrared excess (disk) | |||||||||
Binarity | |||||||||
B magnitude | |||||||||
V magnitude | |||||||||
R magnitude | |||||||||
I magnitude | |||||||||
J magnitude | |||||||||
H magnitude | |||||||||
K magnitude | |||||||||
u magnitude | 22.02 (0.2) | 20.52 (0.05) | 20.52 (0.05) | ||||||
g magnitude | 22.22 (0.1) | 20.52 (0.02) | 20.52 (0.02) | ||||||
r magnitude | 22.17 (0.1) | 20.65 (0.03) | 20.65 (0.03) | ||||||
i magnitude | 22.05 (0.2) | 20.89 (0.06) | 20.89 (0.06) | ||||||
z magnitude | 21.08 (0.2) | 21.01 (0.2) | |||||||
G magnitude | 20.61 (0.08) | 20.70 | 20.61 (0.008) | ||||||
BP magnitude | 20.53 (0.08) | 20.40 | |||||||
RP magnitude | 20.32 (0.1) | 20.44 | |||||||
Pan g magnitude | |||||||||
Pan r magnitude | |||||||||
Pan i magnitude | |||||||||
Pan z magnitude | |||||||||
Pan y magnitude | |||||||||
E(B-V) | 0.076 |
* 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.