All names: Gaia EDR3 1764639677803740672, Gaia DR2 1764639677803740672, SDSS J205029.55+164647.1, Gaia DR3 1764639677803740672, GALEX J205029.4+164647
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 | 20 50 29.56 (0.8) | 20 50 29.55 | 20 50 29.56 (1) | 20 50 29.55 (0.8) | 20 50 29.55 | |||||
Declination | 16 46 46.89 (0.5) | 16 46 47.12 | 16 46 46.90 (2) | 16 46 47.26 (0.5) | 16 46 47.11 | |||||
Spectral type | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 24985.0 | 17254.0 (756) | |||||||
log(g) | [cgs] | 9.43 | 7.90 (0.2) | |||||||
Mass | [M☉] | 1.345 | 0.567 (0.07) | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.6026 | ||||||||
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] | 3.60 (1) | 3.41 (2) | 3.60 (1) | ||||||
Distance | [pc] | 277.41 (108) | 293.14 (163) | 277.42 (108) | ||||||
Composition | H | |||||||||
Proper motion (right ascension) | [mas/yr] | 4.805402033 (1) | 0.962318433 (2) | 4.805 (1) | ||||||
Proper motion (declination) | [mas/yr] | -23.46395619 (1) | -23.419548 (2) | -23.464 (1) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 20.48 (0.05) | 20.60 (0.05) | 20.60 (0.05) | |||||||
g magnitude | 20.37 (0.02) | 20.46 (0.02) | 20.46 (0.02) | |||||||
r magnitude | 20.70 (0.04) | 20.85 (0.04) | 20.85 (0.04) | |||||||
i magnitude | 20.90 (0.09) | 21.07 (0.09) | 21.07 (0.09) | |||||||
z magnitude | 21.37 (0.4) | 21.50 (0.4) | 21.50 (0.4) | |||||||
G magnitude | 20.60 (0.1) | 20.69 | 20.60 (0.008) | |||||||
BP magnitude | 20.47 (0.1) | 20.63 | ||||||||
RP magnitude | 20.54 (0.1) | 20.79 | ||||||||
Pan g magnitude | 20.47 (0.02) | |||||||||
Pan r magnitude | 20.77 (0.01) | |||||||||
Pan i magnitude | 21.02 (0.05) | |||||||||
Pan z magnitude | 21.03 (0.006) | |||||||||
Pan y magnitude | ||||||||||
E(B-V) | 0.043 |
* 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.