All names: SDSS J164459.09+382744.50, Gaia EDR3 1352527979385112192, Gaia DR2 1352527979385112192, Gaia DR3 1352527979385112192, SDSS J164459.08+382744.5, SDSS J164459.09+382744.5, GALEX J164459.1+382745
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 16 44 59.09 (0.2) | 16 44 59.09 | 16 44 59.09 (0.2) | 16 44 59.09 (0.2) | |||||||
Declination | 38 27 44.50 (0.2) | 38 27 44.56 | 38 27 44.50 (0.4) | 38 27 44.62 (0.2) | |||||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 34102.0 (571) | 24941.0 | 35843.0 (445) | |||||||
log(g) | [cgs] | 7.25 (0.1) | 6.89 | 7.39 (0.07) | |||||||
Mass | [M☉] | 0.37 (0.03) | 0.271 | 0.475 (0.01) | |||||||
log(Luminosity) | [L☉] | -0.17 (0.07) | |||||||||
Cooling age | [Gyr] | 0.0003 (0.0002) | |||||||||
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] | 0.60 (0.2) | 0.67 (0.4) | 0.60 (0.2) | |||||||
Distance | [pc] | 1654.16 (666) | 1487.42 (817) | 1654.26 (666) | |||||||
Composition | H | H | |||||||||
Proper motion (right ascension) | [mas/yr] | -4.656738499 (0.2) | -4.643313642 (0.5) | -4.657 (0.2) | |||||||
Proper motion (declination) | [mas/yr] | -7.818122673 (0.3) | -6.920450356 (0.8) | -7.818 (0.3) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 18.82 (0.02) | 18.80 (0.02) | 18.82 (0.02) | ||||||||
g magnitude | 19.12 (0.01) | 19.11 (0.02) | 19.12 (0.01) | ||||||||
r magnitude | 19.66 (0.02) | 19.65 (0.02) | 19.66 (0.01) | ||||||||
i magnitude | 20.11 (0.03) | 20.10 (0.03) | 20.11 (0.03) | ||||||||
z magnitude | 20.38 (0.1) | 20.37 (0.1) | 20.38 (0.1) | ||||||||
G magnitude | 19.37 (0.02) | 19.42 | 19.37 (0.004) | ||||||||
BP magnitude | 19.25 (0.02) | 19.14 | |||||||||
RP magnitude | 19.67 (0.05) | 19.72 | |||||||||
Pan g magnitude | 19.18 (0.01) | ||||||||||
Pan r magnitude | 19.63 (0.01) | ||||||||||
Pan i magnitude | 19.97 (0.01) | ||||||||||
Pan z magnitude | 20.20 (0.03) | ||||||||||
Pan y magnitude | 20.31 (0.2) | ||||||||||
E(B-V) | 0.021 |
* 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.