All names: SDSS J145940.74+244553.4, LAMOST J145940.77+244554.1, GALEX J145940.7+244553, 2MASS J14594080+2445546, Gaia EDR3 1267768144123953280, Gaia DR2 1267768144123953280, SDSS J145940.78+244554.20, TIC 229877520, SDSS J145940.77+244554.1, WD 1457+249, WIRED J145940.77+244554.1, WDJ145940.80+244554.60, SDSS J145940.78+244554.2, Gaia DR3 1267768144123953280, SDSS J145940.78+244554.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD H | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Sayres et al. 2012 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 59 40.72 (0.03) | 14 59 40.78 | 14 59 40.73 (0.05) | 14 59 40.80 | 14 59 40.72 | 14 59 40.80 (0.03) | 14 59 40.73 | 14 59 40.78 | |||||||||
| Declination | 24 45 53.11 (0.03) | 24 45 54.18 | 24 45 53.15 (0.05) | 24 45 54.60 | 24 45 53.11 | 24 45 54.60 (0.03) | 24 45 53.15 | 24 45 54.19 | |||||||||
| Spectral type | DBA | DB | DBA | DBA | DBA | DB | |||||||||||
| Effective temperature | [K] | 13300.0 | 12535.0 | 11658.0 | 12360.0 | 13584.0 (37) | 13510.0 (100) | 12684.0 (118) | 14177.0 (92) | ||||||||
| log(g) | [cgs] | 7.91 | 7.99 | 7.97 | 7.98 | 8.00 (0) | 8.09 (0.08) | 8.01 (0.01) | 8.69 (0.06) | ||||||||
| Mass | [M☉] | 0.534 | 0.577 | 0.586 | 0.572 | 0.589 (0.01) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 0.3866 | 0.3410 | ||||||||||||||
| log(H/He) | -5.922 | -5.68 (0.2) | -5.9 (0.1) | ||||||||||||||
| log(C/He) | |||||||||||||||||
| log(Ca/He) | <-9.4 | ||||||||||||||||
| log(Ca/H) | |||||||||||||||||
| log(N/He) | |||||||||||||||||
| log(O/He) | |||||||||||||||||
| log(Na/He) | |||||||||||||||||
| log(Mg/He) | |||||||||||||||||
| log(Al/He) | |||||||||||||||||
| log(Si/He) | |||||||||||||||||
| log(P/He) | |||||||||||||||||
| log(S/He) | |||||||||||||||||
| log(Cl/He) | |||||||||||||||||
| log(Sc/He) | |||||||||||||||||
| log(Ti/He) | |||||||||||||||||
| log(V/He) | |||||||||||||||||
| log(Cr/He) | |||||||||||||||||
| log(Mn/He) | |||||||||||||||||
| log(Fe/He) | |||||||||||||||||
| log(Co/He) | |||||||||||||||||
| log(Ni/He) | |||||||||||||||||
| log(Cu/He) | |||||||||||||||||
| log(Zn/He) | |||||||||||||||||
| log(Ga/He) | |||||||||||||||||
| log(Ge/He) | |||||||||||||||||
| log(Sr/He) | |||||||||||||||||
| Parallax | [mas] | 11.84 (0.05) | 11.90 (0.07) | 11.84 | 11.84 (0.05) | 11.90 (0.07) | |||||||||||
| Distance | [pc] | 84.44 (0.3) | 84.06 (0.5) | 90.00 | 85.60 | 84.44 | 84.44 (0.3) | 84.06 (0.5) | |||||||||
| Composition | He | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -61.47193352 (0.03) | -61.51896682 (0.1) | -61.472 (0.03) | -61.519 | ||||||||||||
| Proper motion (declination) | [mas/yr] | -93.36038224 (0.04) | -93.15365976 (0.1) | -93.36 (0.04) | -93.154 | ||||||||||||
| Variability | |||||||||||||||||
| Magnetic | |||||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | |||||||||||||||||
| B magnitude | |||||||||||||||||
| V magnitude | |||||||||||||||||
| R magnitude | |||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 16.48 (0.1) | 16.48 (0.1) | |||||||||||||||
| H magnitude | 16.39 (0.3) | 16.39 (0.1) | |||||||||||||||
| K magnitude | 16.27 | 16.27 (0.1) | |||||||||||||||
| u magnitude | 16.20 (0.005) | 16.25 (0.006) | 16.20 (0.005) | 16.24 (0.006) | 16.25 (0.02) | ||||||||||||
| g magnitude | 16.19 (0.003) | 16.21 (0.004) | 16.18 (0.003) | 16.22 (0.004) | 16.22 (0.02) | ||||||||||||
| r magnitude | 16.45 (0.004) | (0.004) | 16.43 (0.004) | 16.44 (0.004) | 16.45 (0.02) | ||||||||||||
| i magnitude | 16.64 (0.004) | 16.64 (0.005) | 16.62 (0.004) | 16.64 (0.005) | 16.65 (0.01) | ||||||||||||
| z magnitude | 16.83 (0.01) | 16.85 (0.01) | 16.83 (0.01) | 16.86 (0.01) | 16.86 (0.02) | ||||||||||||
| G magnitude | 16.31 (0.002) | 16.33 | 16.31 | 16.31 (0.003) | 16.33 | ||||||||||||
| BP magnitude | 16.28 (0.002) | 16.25 | 16.25 | ||||||||||||||
| RP magnitude | 16.33 (0.003) | 16.33 | 16.33 | ||||||||||||||
| Pan g magnitude | 16.25 (0.002) | ||||||||||||||||
| Pan r magnitude | 16.44 (0.004) | ||||||||||||||||
| Pan i magnitude | 16.65 (0.002) | ||||||||||||||||
| Pan z magnitude | 16.84 (0.005) | ||||||||||||||||
| Pan y magnitude | 17.00 (0.009) | ||||||||||||||||
| E(B-V) | 0.014 | ||||||||||||||||
* 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.