All names: Gaia DR2 2842006355418517376, SDSS J230410.96+232236.13, Gaia EDR3 2842006355419431040, GALEX J230410.9+232236, SDSS J230410.96+232236.1, Gaia DR3 2842006355419431040, SDSS J230410.95+232236.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 04 10.96 (0.3) | 23 04 10.96 | 23 04 10.96 (0.4) | 23 04 10.96 (0.3) | ||||||
| Declination | 23 22 36.13 (0.3) | 23 22 36.15 | 23 22 36.13 (0.3) | 23 22 36.17 (0.3) | ||||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 31572.0 (410) | 31756.0 (283) | |||||||
| log(g) | [cgs] | 7.19 (0.1) | 7.35 (0.05) | |||||||
| Mass | [M☉] | 0.34 (0.03) | 0.445 (0.01) | |||||||
| log(Luminosity) | [L☉] | -0.27 (0.06) | ||||||||
| Cooling age | [Gyr] | 0.0003 (0.0002) | ||||||||
| 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] | 0.89 (0.4) | 0.46 (0.5) | 0.89 (0.4) | ||||||
| Distance | [pc] | 1123.51 (443) | 2176.84 (2182) | 1123.47 (443) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -7.629073199 (0.3) | -6.868277416 (0.8) | -7.629 (0.3) | ||||||
| Proper motion (declination) | [mas/yr] | -2.504937978 (0.3) | -2.852862642 (0.7) | -2.505 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.17 (0.02) | 19.19 (0.03) | 19.19 (0.03) | |||||||
| g magnitude | 19.41 (0.01) | 19.43 (0.02) | 19.43 (0.02) | |||||||
| r magnitude | 19.76 (0.02) | 19.78 (0.02) | 19.78 (0.02) | |||||||
| i magnitude | 20.10 (0.03) | 20.13 (0.03) | 20.13 (0.03) | |||||||
| z magnitude | 20.45 (0.2) | 20.43 (0.1) | 20.43 (0.1) | |||||||
| G magnitude | 19.58 (0.03) | 19.63 | 19.58 (0.004) | |||||||
| BP magnitude | 19.46 (0.03) | 19.46 | ||||||||
| RP magnitude | 19.61 (0.08) | 19.91 | ||||||||
| Pan g magnitude | 19.43 (0.02) | |||||||||
| Pan r magnitude | 19.79 (0.01) | |||||||||
| Pan i magnitude | 20.09 (0.01) | |||||||||
| Pan z magnitude | 20.37 (0.1) | |||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.052 | |||||||||
* 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.