All names: GALEX J124407.7+582351, Gaia DR2 1578072075196590720, SDSS J124407.66+582351.8, Gaia DR3 1578072075196957696, SDSS J124407.67+582351.8, Gaia EDR3 1578072075196957696, LAMOST J124407.66+582351.8, SBSS 1241+586, WD 1241+586, SDSS J124407.67+582351.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 44 07.65 (0.06) | 12 44 07.67 | 12 44 07.65 (0.07) | 12 44 07.65 | 12 44 07.67 (0.06) | 12 44 07.67 | 12 44 07.39 | 12 44 07.67 | |||||||
| Declination | 58 23 51.73 (0.05) | 58 23 51.82 | 58 23 51.74 (0.07) | 58 23 51.73 | 58 23 51.91 (0.05) | 58 23 51.89 | 58 23 47.76 | 58 23 51.89 | |||||||
| Spectral type | DA | DA | DA | DA | DAO | DA_auto | DAO | DA | DA | ||||||
| Effective temperature | [K] | 31607.0 (175) | 31870.0 (170) | 34629.0 (1598) | 31480.0 (157) | 31500.0 (98) | |||||||||
| log(g) | [cgs] | 7.98 (0.04) | 7.96 (0.04) | 8.16 (0.04) | 7.98 (0.03) | 7.97 (0.03) | |||||||||
| Mass | [M☉] | 0.64 (0.02) | 0.63 (0.02) | 0.747 (0.03) | 0.631 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | -0.78 (0.03) | |||||||||||||
| Cooling age | [Gyr] | 0.0076 (0.0002) | 0.0087 | ||||||||||||
| 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] | 3.69 (0.07) | 3.70 (0.1) | 3.69 | 3.69 (0.07) | ||||||||||
| Distance | [pc] | 270.92 (5) | 270.22 (7) | 270.92 | 270.91 (5) | ||||||||||
| Composition | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.238831138 (0.07) | -8.980353198 (0.2) | -9.239 (0.07) | -6.4 | ||||||||||
| Proper motion (declination) | [mas/yr] | -10.92943347 (0.06) | -10.86499427 (0.1) | -10.929 (0.07) | -11.6 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 17.50 | ||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | |||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 16.61 (0.007) | 16.61 (0.007) | 16.59 (0.02) | 16.58 | 16.61 (0.02) | ||||||||||
| g magnitude | 16.87 (0.004) | 16.87 (0.004) | 16.85 (0.03) | 16.84 | 16.87 (0.03) | ||||||||||
| r magnitude | 17.34 (0.005) | 17.34 (0.005) | 17.30 (0.02) | 17.29 | 17.31 (0.02) | ||||||||||
| i magnitude | 17.70 (0.007) | 17.70 (0.007) | 17.70 (0.02) | 17.69 | 17.69 (0.02) | ||||||||||
| z magnitude | 18.09 (0.02) | 18.09 (0.02) | 18.09 (0.03) | 18.08 | 18.08 (0.03) | ||||||||||
| G magnitude | 17.13 (0.006) | 17.14 | 17.13 | 17.13 (0.003) | |||||||||||
| BP magnitude | 16.98 (0.006) | 16.91 | |||||||||||||
| RP magnitude | 17.41 (0.01) | 17.41 | |||||||||||||
| Pan g magnitude | 16.92 (0.003) | ||||||||||||||
| Pan r magnitude | 17.34 (0.004) | ||||||||||||||
| Pan i magnitude | 17.73 (0.004) | ||||||||||||||
| Pan z magnitude | 18.02 (0.007) | ||||||||||||||
| Pan y magnitude | 18.22 (0.01) | ||||||||||||||
| E(B-V) | 0.017 | ||||||||||||||
* 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.