All names: SDSS J202011.19-000516.0, Gaia EDR3 4230332092645516672, WDJ202011.21-000515.55, GALEX J202011.1-000517, Gaia DR3 4230332092645516672, Gaia DR2 4230332092645516672, SDSS J202011.18-000515.9, NLTT 49078, WDJ202011.21-000515.54, LP 635-2, J2020-0005
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 20 20 11.02 (0.07) | 20 20 11.02 | 20 20 11.02 | 20 20 11.21 (0.07) | 20 20 11.02 | |||||||
Declination | -00 05 19.21 (0.06) | -00 05 19.09 | -00 05 19.21 | -00 05 15.54 (0.06) | -00 05 19.09 | |||||||
Spectral type | DA | DA | DA | DA | ||||||||
Effective temperature | [K] | 6976.0 (36) | 6952.0 (41) | 6793.0 | 6544.0 | 7057.0 (61) | ||||||
log(g) | [cgs] | 7.96 (0.01) | 7.95 (0.01) | 7.90 | 7.78 | 7.99 (0.02) | ||||||
Mass | [M☉] | 0.571 (0.01) | 0.564 (0.01) | 0.533 | 0.448 | 0.589 (0.01) | ||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 1.5000 | 1.4180 | 1.3930 | ||||||||
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] | 15.13 (0.09) | 15.09 (0.1) | 15.09 (0.1) | 15.13 | 15.13 (0.09) | 15.09 (0.1) | |||||
Distance | [pc] | 66.09 (0.4) | 66.27 (0.5) | 66.25 (0.5) | 66.09 | 66.09 (0.4) | 66.25 (0.5) | |||||
Composition | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | -182.4453629 (0.09) | -182.1703854 (0.2) | -182.445 (0.09) | -182.1703854 | |||||||
Proper motion (declination) | [mas/yr] | -228.9814687 (0.08) | -228.6937308 (0.1) | -228.981 (0.08) | -228.6937308 | |||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | ||||||||||||
V magnitude | ||||||||||||
R magnitude | ||||||||||||
I magnitude | ||||||||||||
J magnitude | 16.79 (0.02) | |||||||||||
H magnitude | ||||||||||||
K magnitude | 16.74 (0.06) | |||||||||||
u magnitude | 18.25 (0.01) | 18.25 (0.01) | 18.29 (0.01) | |||||||||
g magnitude | 17.70 (0.005) | 17.70 (0.005) | ||||||||||
r magnitude | 17.50 (0.006) | 17.50 (0.006) | ||||||||||
i magnitude | 17.44 (0.006) | 17.45 (0.006) | ||||||||||
z magnitude | 17.52 (0.02) | 17.49 (0.02) | ||||||||||
G magnitude | 17.50 (0.007) | 17.52 | 17.50 | 17.50 (0.003) | 17.52 | |||||||
BP magnitude | 17.71 (0.007) | 17.69 | 17.69 | |||||||||
RP magnitude | 17.16 (0.007) | 17.15 | 17.15 | |||||||||
Pan g magnitude | 17.72 (0.008) | 17.72 (0.007) | ||||||||||
Pan r magnitude | 17.52 (0.003) | 17.52 (0.003) | ||||||||||
Pan i magnitude | 17.49 (0.003) | 17.49 (0.003) | ||||||||||
Pan z magnitude | 17.53 (0.01) | 17.53 (0.01) | ||||||||||
Pan y magnitude | 17.53 (0.008) | 17.53 (0.007) | ||||||||||
E(B-V) | 0.002 |
* 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.