All names: SDSS J042806.47+000642.2, WDJ042806.48+000642.13, Gaia DR3 3254620736808973184, WDJ04286.48+000642.13, Gaia EDR3 3254620736808973184, GALEX J042806.4+000642, Gaia DR2 3254620732512634624, J0428+0006, SDSS J042806.47+000642.1
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 | 04 28 06.61 (0.1) | 04 28 06.61 | 04 28 06.61 | 04 28 06.48 (0.1) | 04 28 06.61 | |||||||
Declination | 00 06 41.88 (0.1) | 00 06 41.89 | 00 06 41.88 | 00 06 42.13 (0.1) | 00 06 41.89 | |||||||
Spectral type | DA | DA | DA | DA | ||||||||
Effective temperature | [K] | 6805.0 (53) | 6852.0 (52) | 6778.0 | 6529.0 | 6964.0 (141) | ||||||
log(g) | [cgs] | 8.12 (0.04) | 8.12 (0.04) | 8.10 | 7.98 | 8.07 (0.04) | ||||||
Mass | [M☉] | 0.664 (0.04) | 0.668 (0.04) | 0.654 | 0.564 | 0.633 (0.04) | ||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 2.0300 | 1.9640 | 1.8040 | ||||||||
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] | 10.75 (0.2) | 11.41 (0.4) | 11.41 (0.4) | 10.75 | 10.75 (0.2) | 11.41 (0.4) | |||||
Distance | [pc] | 93.02 (2) | 87.64 (3) | 87.67 (3) | 93.02 | 93.02 (2) | 87.67 (3) | |||||
Composition | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | 122.331304 (0.2) | 122.4373991 (0.6) | 122.331 (0.2) | 122.4373991 | |||||||
Proper motion (declination) | [mas/yr] | -15.66655373 (0.2) | -16.06740264 (0.4) | -15.667 (0.2) | -16.06740264 | |||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | ||||||||||||
V magnitude | ||||||||||||
R magnitude | ||||||||||||
I magnitude | ||||||||||||
J magnitude | 17.73 (0.04) | |||||||||||
H magnitude | ||||||||||||
K magnitude | ||||||||||||
u magnitude | 19.24 (0.03) | 19.19 (0.02) | 19.19 (0.02) | |||||||||
g magnitude | 18.63 (0.007) | 18.63 (0.007) | ||||||||||
r magnitude | 18.43 (0.008) | 18.43 (0.008) | ||||||||||
i magnitude | 18.36 (0.01) | 18.36 (0.01) | ||||||||||
z magnitude | 18.37 (0.03) | 18.37 (0.03) | ||||||||||
G magnitude | 18.41 (0.02) | 18.43 | 18.41 | 18.41 (0.003) | 18.43 | |||||||
BP magnitude | 18.61 (0.02) | 18.61 | 18.61 | |||||||||
RP magnitude | 18.06 (0.03) | 18.05 | 18.05 | |||||||||
Pan g magnitude | 18.61 (0.006) | 18.61 (0.007) | ||||||||||
Pan r magnitude | 18.42 (0.006) | 18.42 (0.006) | ||||||||||
Pan i magnitude | 18.39 (0.006) | 18.39 (0.007) | ||||||||||
Pan z magnitude | 18.41 (0.01) | 18.41 (0.01) | ||||||||||
Pan y magnitude | 18.42 (0.02) | 18.42 (0.02) | ||||||||||
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.