All names: 2QZ J121717.4-014445, SDSS J121717.48-014444.4, QUEST J121727.5-014036.5, Gaia DR2 3694558871206540416, SDSS J121717.48-014444.5, SDSS J121717.48-014444.50, Gaia EDR3 3694558871206540416, GALEX J121717.5-014444, Gaia DR3 3694558871206540416
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 17 17.50 (0.3) | 12 17 17.48 | 12 17 17.50 (0.4) | 12 17 17.50 | 12 17 17.48 (0.3) | ||||||
Declination | -01 44 45.11 (0.2) | -01 44 44.50 | -01 44 45.09 (0.3) | -01 44 45.11 | -01 44 44.49 (0.2) | ||||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 6927.0 | 7056.0 (81) | 6890.0 (308) | |||||||
log(g) | [cgs] | 8.04 | 7.55 (0.2) | 7.91 (0.1) | |||||||
Mass | [M☉] | 0.615 | 0.35675 (0.05) | 0.54 (0.1) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 1.6520 | |||||||||
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] | 5.56 (0.4) | 5.93 (0.5) | 5.56 | 5.56 (0.4) | ||||||
Distance | [pc] | 179.83 (12) | 168.67 (13) | 179.83 | 179.83 (12) | ||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | 18.29705371 (0.5) | 19.44148258 (1) | 18.297 (0.5) | |||||||
Proper motion (declination) | [mas/yr] | -38.40806736 (0.3) | -38.89663213 (0.6) | -38.408 (0.3) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | 20.00 | ||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 20.48 (0.05) | 20.48 (0.05) | 20.47 (0.05) | ||||||||
g magnitude | 19.89 (0.02) | 19.89 (0.02) | 19.89 (0.02) | ||||||||
r magnitude | 19.62 (0.02) | 19.65 (0.02) | 19.61 (0.02) | ||||||||
i magnitude | 19.62 (0.03) | 19.63 (0.03) | 19.61 (0.03) | ||||||||
z magnitude | 19.82 (0.1) | 19.84 (0.1) | 19.81 (0.1) | ||||||||
G magnitude | 19.68 (0.05) | 19.73 | 19.68 | 19.68 (0.004) | |||||||
BP magnitude | 19.93 (0.05) | 19.79 | |||||||||
RP magnitude | 19.29 (0.04) | 19.25 | |||||||||
Pan g magnitude | 19.83 (0.01) | ||||||||||
Pan r magnitude | 19.70 (0.01) | ||||||||||
Pan i magnitude | 19.68 (0.01) | ||||||||||
Pan z magnitude | 19.66 (0.03) | ||||||||||
Pan y magnitude | 19.65 (0.03) | ||||||||||
E(B-V) | 0.018 |
* 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.