All names: SDSS J023113.02-004057.2, ULAS J023113.02-004057.1, GALEX J023112.9-004055, SDSS J023113.00-004056.8, Gaia DR3 2500140354659949440, SDSS J023113.02-004057.1, SDSS J023113.02-004056.7, WD 0228-009, Gaia EDR3 2500140354659949440, WIRED J023113.02-004056.7, Gaia DR2 2500140354659949440, SDSS J023113.03-004056.8
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 31 13.03 (0.4) | 02 31 13.03 | 02 31 13.03 (0.6) | 02 31 13.03 (0.4) | 02 31 13.02 | 02 31 13.20 | 02 31 13.03 | ||
| Declination | -00 40 57.26 (0.4) | -00 40 57.18 | -00 40 57.26 (0.5) | -00 40 57.16 (0.4) | -00 40 57.18 | -00 40 50.52 | -00 40 56.79 | ||
| Spectral type | DA+dMe | DA+M | DA dM | DA+M | |||||
| Effective temperature | [K] | 6305.0 (10) | 6305.0 (9) | ||||||
| log(g) | [cgs] | 7.34 (0.6) | 5.60 (0.5) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.52 (0.5) | 1.05 (0.6) | 1.52 (0.5) | |||||
| Distance | [pc] | 658.29 (200) | 954.60 (582) | 658.28 (200) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.026940504 (0.6) | -0.011142332 (2) | 2.027 (0.6) | -0.1 | ||||
| Proper motion (declination) | [mas/yr] | -6.024861005 (0.5) | -6.477390592 (1) | -6.025 (0.5) | -30.4 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 17.31 (0.03) | ||||||||
| H magnitude | 16.79 (0.04) | ||||||||
| K magnitude | 16.59 (0.06) | ||||||||
| u magnitude | 24.63 (0.7) | 25.41 (1) | 25.42 (1) | 25.42 | 25.43 (1) | ||||
| g magnitude | 22.38 (0.1) | 23.65 (0.3) | 23.81 (1) | 23.81 | 23.83 (1) | ||||
| r magnitude | 20.55 (0.03) | 20.31 (0.03) | 20.45 (0.04) | 20.45 | 20.46 (0.04) | ||||
| i magnitude | 19.39 (0.02) | 19.14 (0.02) | 19.27 (0.02) | 19.27 | 19.28 (0.02) | ||||
| z magnitude | 18.65 (0.03) | 18.56 (0.03) | 18.65 (0.04) | 18.65 | 18.67 (0.03) | ||||
| G magnitude | 19.99 (0.1) | 20.03 | 19.99 (0.008) | ||||||
| BP magnitude | 20.57 (0.1) | 19.94 | |||||||
| RP magnitude | 18.82 (0.06) | 18.88 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.027 | ||||||||
* 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.