All names: Gaia DR3 545997618721866624, 2MASS J02392815+7300535, Gaia EDR3 545997618721866624, SDSS J023928.07+730054.1, GALEX J023928.0+730053, J0239+7300, WDJ023928.16+730053.67, SDSS J023928.09+730053.9, Gaia DR2 545997618721866624, TIC 396238540
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | 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 | 02 39 27.96 (0.04) | 02 39 27.97 | 02 39 27.96 | 02 39 28.16 (0.04) | 02 39 27.97 | ||||||||
Declination | 73 00 54.45 (0.05) | 73 00 54.42 | 73 00 54.45 | 73 00 53.67 (0.05) | 73 00 54.42 | ||||||||
Spectral type | DA | DA | DA | DA | DA | ||||||||
Effective temperature | [K] | 7856.0 (44) | 7823.0 (41) | 7857.0 (44) | 7728.0 | 7464.0 | 7939.0 (65) | ||||||
log(g) | [cgs] | 7.94 (0.01) | 7.93 (0.01) | 7.94 (0.01) | 7.90 | 7.80 | 7.97 (0.01) | ||||||
Mass | [M☉] | 0.559 (0.008) | 0.552 (0.009) | 0.558 (0.009) | 0.538 | 0.462 | 0.574 (0.01) | ||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 1.0700 | 1.0260 | 1.0230 | |||||||||
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] | 15.28 (0.06) | 15.26 (0.09) | 15.26 (0.09) | 15.28 | 15.28 (0.06) | 15.26 (0.09) | ||||||
Distance | [pc] | 65.46 (0.3) | 65.53 (0.4) | 65.54 (0.4) | 65.46 | 65.46 (0.3) | 65.54 (0.4) | ||||||
Composition | H | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | -55.92963901 (0.05) | -55.7584882 (0.1) | -55.93 (0.05) | -55.7584882 | ||||||||
Proper motion (declination) | [mas/yr] | 48.42792337 (0.07) | 48.16773665 (0.1) | 48.428 (0.07) | 48.16773665 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.44 (0.1) | 16.44 (0.1) | |||||||||||
H magnitude | 16.38 (0.2) | 16.38 (0.2) | |||||||||||
K magnitude | |||||||||||||
u magnitude | 17.57 (0.01) | 17.58 (0.01) | 17.58 (0.01) | ||||||||||
g magnitude | 17.14 (0.004) | 17.14 (0.004) | |||||||||||
r magnitude | 17.05 (0.005) | 17.05 (0.005) | |||||||||||
i magnitude | 17.05 (0.005) | 17.05 (0.005) | |||||||||||
z magnitude | 17.18 (0.01) | 17.18 (0.01) | |||||||||||
G magnitude | 17.00 (0.005) | 17.02 | 17.00 | 17.00 (0.003) | 17.02 | ||||||||
BP magnitude | 17.14 (0.005) | 17.12 | 17.12 | ||||||||||
RP magnitude | 16.77 (0.006) | 16.77 | 16.77 | ||||||||||
Pan g magnitude | 17.14 (0.004) | 17.14 (0.004) | |||||||||||
Pan r magnitude | 17.05 (0.004) | 17.05 (0.005) | |||||||||||
Pan i magnitude | 17.08 (0.004) | 17.08 (0.004) | |||||||||||
Pan z magnitude | 17.17 (0.005) | 17.17 (0.005) | |||||||||||
Pan y magnitude | 17.20 (0.01) | 17.20 (0.009) | |||||||||||
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.