All names: Gaia EDR3 675794279186892160, GALEX J081731.0+205849, Gaia DR3 675794279186892160, Gaia DR2 675794274889645440, SDSS J081731.06+205850.1, SDSS J081731.06+205850.0
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 | 08 17 31.06 (0.4) | 08 17 31.07 | 08 17 31.06 (0.5) | 08 17 31.07 (0.4) | 08 17 31.06 | |||||
Declination | 20 58 49.95 (0.3) | 20 58 50.09 | 20 58 49.96 (0.3) | 20 58 50.10 (0.3) | 20 58 50.09 | |||||
Spectral type | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 11840.0 | 13077.0 (428) | |||||||
log(g) | [cgs] | 7.80 | 7.83 (0.1) | |||||||
Mass | [M☉] | 0.497 | 0.522 (0.06) | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.3015 | ||||||||
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] | 2.19 (0.4) | 2.12 (0.7) | 2.19 (0.4) | ||||||
Distance | [pc] | 456.57 (88) | 472.42 (159) | 456.58 (88) | ||||||
Composition | H | |||||||||
Proper motion (right ascension) | [mas/yr] | -5.832871518 (0.5) | -5.445729061 (1) | -5.833 (0.5) | ||||||
Proper motion (declination) | [mas/yr] | -9.177065815 (0.3) | -8.704575492 (0.6) | -9.177 (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 | 20.07 (0.04) | 20.07 (0.04) | 20.20 (0.06) | |||||||
g magnitude | 19.73 (0.01) | 19.73 (0.01) | 19.70 (0.02) | |||||||
r magnitude | 19.92 (0.02) | 19.92 (0.02) | 19.95 (0.02) | |||||||
i magnitude | 20.15 (0.03) | 20.15 (0.03) | 20.15 (0.03) | |||||||
z magnitude | 20.43 (0.1) | 20.43 (0.1) | 20.31 (0.1) | |||||||
G magnitude | 19.82 (0.04) | 19.88 | 19.82 (0.005) | |||||||
BP magnitude | 19.81 (0.04) | 19.70 | ||||||||
RP magnitude | 19.91 (0.09) | 19.70 | ||||||||
Pan g magnitude | 19.73 (0.02) | |||||||||
Pan r magnitude | 19.94 (0.01) | |||||||||
Pan i magnitude | 20.17 (0.04) | |||||||||
Pan z magnitude | 20.35 (0.03) | |||||||||
Pan y magnitude | 20.39 (0.1) | |||||||||
E(B-V) | 0.028 |
* 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.