All names: Gaia EDR3 4561402637270247552, SDSS J165417.27+193857.80, Gaia DR2 4561402637270247552, Gaia DR3 4561402637270247552, SDSS J165417.25+193857.7, SDSS J165417.27+193857.8, SDSS J165417.26+193857.7, GALEX J165417.3+193858
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 54 17.25 (0.1) | 16 54 17.26 | 16 54 17.25 (0.2) | 16 54 17.25 | 16 54 17.27 (0.1) | 16 54 17.27 | |||||||
Declination | 19 38 57.87 (0.1) | 19 38 57.76 | 19 38 57.86 (0.2) | 19 38 57.87 | 19 38 57.77 (0.1) | 19 38 57.76 | |||||||
Spectral type | DBA: | DB | DBA | DBA: | DB | ||||||||
Effective temperature | [K] | 14174.0 | 12982.0 | 11895.0 | 12510.0 (567) | 14789.0 (343) | |||||||
log(g) | [cgs] | 8.32 | 8.03 | 7.96 | 7.81 (0.1) | 8.75 (0.2) | |||||||
Mass | [M☉] | 0.791 | 0.604 | 0.559 | 0.483 (0.07) | ||||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 0.3685 | |||||||||||
log(H/He) | -5.139 | ||||||||||||
log(C/He) | |||||||||||||
log(Ca/He) | |||||||||||||
log(Ca/H) | |||||||||||||
log(N/He) | |||||||||||||
log(O/He) | |||||||||||||
log(Na/He) | |||||||||||||
log(Mg/He) | |||||||||||||
log(Al/He) | |||||||||||||
log(Si/He) | |||||||||||||
log(P/He) | |||||||||||||
log(S/He) | |||||||||||||
log(Cl/He) | |||||||||||||
log(Sc/He) | |||||||||||||
log(Ti/He) | |||||||||||||
log(V/He) | |||||||||||||
log(Cr/He) | |||||||||||||
log(Mn/He) | |||||||||||||
log(Fe/He) | |||||||||||||
log(Co/He) | |||||||||||||
log(Ni/He) | |||||||||||||
log(Cu/He) | |||||||||||||
log(Zn/He) | |||||||||||||
log(Ga/He) | |||||||||||||
log(Ge/He) | |||||||||||||
log(Sr/He) | |||||||||||||
Parallax | [mas] | 3.03 (0.2) | 3.34 (0.2) | 3.03 | 3.03 (0.2) | ||||||||
Distance | [pc] | 330.19 (22) | 299.03 (22) | 330.19 | 330.20 (22) | ||||||||
Composition | He | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -20.15824738 (0.2) | -20.25783185 (0.4) | -20.158 (0.2) | |||||||||
Proper motion (declination) | [mas/yr] | 6.165736866 (0.2) | 6.059616618 (0.4) | 6.166 (0.2) | |||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | |||||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 19.07 (0.02) | 19.07 (0.02) | 19.07 (0.02) | ||||||||||
g magnitude | 19.05 (0.01) | 19.05 (0.01) | 19.05 (0.01) | ||||||||||
r magnitude | 19.25 (0.01) | 19.25 (0.01) | 19.26 (0.02) | ||||||||||
i magnitude | 19.42 (0.02) | 19.42 (0.02) | 19.43 (0.02) | ||||||||||
z magnitude | 19.60 (0.08) | 19.60 (0.08) | 19.59 (0.07) | ||||||||||
G magnitude | 19.12 (0.03) | 19.17 | 19.12 | 19.12 (0.003) | |||||||||
BP magnitude | 19.12 (0.03) | 19.09 | |||||||||||
RP magnitude | 19.11 (0.03) | 19.10 | |||||||||||
Pan g magnitude | 19.08 (0.007) | ||||||||||||
Pan r magnitude | 19.26 (0.007) | ||||||||||||
Pan i magnitude | 19.46 (0.006) | ||||||||||||
Pan z magnitude | 19.64 (0.03) | ||||||||||||
Pan y magnitude | 19.77 (0.05) | ||||||||||||
E(B-V) | 0.045 |
* 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.