All names: GD 619, MCT 0031-2724, WD 0031-27, EC 00314-2724, UCAC2 20533129, SGPA 69, WISEA J003353.90-270823.8, WISE J003353.89-270823.7, [PS72] 237, Gaia DR2 2346378708690580096, 1SWASP J003353.90-270823.6, WD 0031-274, Ton S 163, Gaia DR3 2346378708690580096, Gaia EDR3 2346378708690580096, TIC 340704781, GALEX J003353.9-270823, MCT0031-2724, GEN# +6.10080163, 2MASS J00335389-2708237, HE 0031-2724
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 33 53.89 (0.03) | 00 33 53.89 | 00 33 53.89 (0.04) | 00 33 53.89 (0.03) | 00 33 53.88 | |||
| Declination | -27 08 23.91 (0.02) | -27 08 24.10 | -27 08 23.91 (0.03) | -27 08 23.86 (0.02) | -27 08 21.84 | |||
| Spectral type | sdB | sdO6He1 | DA1 | |||||
| Effective temperature | [K] | 36097.0 (500) | ||||||
| log(g) | [cgs] | 5.82 (0.05) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.30 (0.04) | 1.22 (0.06) | 1.22 (0.06) | 1.30 (0.04) | |||
| Distance | [pc] | 766.80 (23) | 816.66 (39) | 816.69 (39) | 766.81 (23) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -3.583776743 (0.04) | -3.786 (0.09) | -3.78635029 (0.09) | -3.584 (0.04) | |||
| Proper motion (declination) | [mas/yr] | -3.338554177 (0.04) | -3.216 (0.05) | -3.216449772 (0.05) | -3.339 (0.04) | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 13.96 (0.02) | |||||||
| V magnitude | 14.19 (0.01) | |||||||
| R magnitude | 14.48 (0.1) | |||||||
| I magnitude | ||||||||
| J magnitude | 14.58 (0.03) | 14.58 (0.03) | ||||||
| H magnitude | 14.62 (0.06) | 14.62 (0.06) | ||||||
| K magnitude | 14.57 (0.1) | 14.57 (0.1) | ||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 14.17 (0.001) | 14.17 (0.0006) | 14.17 | 14.17 (0.003) | ||||
| BP magnitude | 14.01 (0.001) | 13.96 (0.007) | 13.96 | |||||
| RP magnitude | 14.43 (0.001) | 14.43 (0.002) | 14.43 | |||||
| Pan g magnitude | 14.00 (0.008) | 14.00 (0.008) | ||||||
| Pan r magnitude | 14.45 (0.004) | 14.45 (0.004) | ||||||
| Pan i magnitude | 14.79 (0.004) | 14.79 (0.004) | ||||||
| Pan z magnitude | 15.04 (0.007) | 15.04 (0.007) | ||||||
| Pan y magnitude | 15.18 (0.02) | 15.18 (0.02) | ||||||
| E(B-V) | 0.006 | |||||||
* 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.