All names: ULAS J031909.95+002157.1, WISE J031909.95+002156.9, SDSS J031909.95+002156.9, 2MASS J03190996+0021572, SDSS J031909.94+002158.8, WDS J03192+0022A, WD 0316+001, Gaia DR2 3265943812493081984, ** SKF 1680A
| Parameter | Unit | Gaia DR2 | sdss-wdms.org (29/04/2016) | SDSS DR12 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 19 09.96 (0.2) | 03 19 09.94 | 03 19 09.93 | 03 19 09.96 (0.2) | 03 19 09.94 | 03 19 09.98 | 03 19 09.94 | |
| Declination | 00 21 56.87 (0.2) | 00 21 58.79 | 00 21 58.90 | 00 21 56.98 (0.2) | 00 21 58.83 | 00 21 57.24 | 00 21 58.82 | |
| Spectral type | DA+M | DA+M | DAB: d | DA+M | ||||
| Effective temperature | [K] | 28718.0 (1548) | 28932.0 (2209) | 27769.0 (2463) | ||||
| log(g) | [cgs] | 7.68 (0.3) | 6.14 (0.4) | 6.02 (0.4) | ||||
| Mass | [M☉] | 0.49 (0.2) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.94 (0.2) | 1.94 (0.2) | |||||
| Distance | [pc] | 515.82 (62) | 515.81 (62) | |||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 2.3325857238 (0.4) | 2.333 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | -6.91914782347 (0.4) | -6.919 (0.4) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | WDMS | WDMS | |||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 15.36 (0.04) | |||||||
| H magnitude | 14.67 (0.04) | |||||||
| K magnitude | 14.34 (0.07) | |||||||
| u magnitude | 20.29 | 20.38 (0.05) | 24.46 (1) | 20.29 (0.06) | 20.29 | 20.30 (0.06) | ||
| g magnitude | 20.24 | 20.26 (0.02) | 20.50 (0.03) | 20.24 (0.05) | 20.24 | 20.25 (0.05) | ||
| r magnitude | 20.67 | 20.60 (0.03) | 19.01 (0.01) | 20.67 (0.3) | 20.67 | 20.66 (0.3) | ||
| i magnitude | 20.28 | 20.71 (0.04) | 17.65 (0.007) | 20.28 (1) | 20.28 | 20.28 (1) | ||
| z magnitude | 20.82 | 21.50 (0.3) | 16.87 (0.01) | 20.82 (1) | 20.82 | 20.81 (1) | ||
| G magnitude | 18.37 | 18.37 (0.002) | ||||||
| BP magnitude | 19.61 | |||||||
| RP magnitude | 17.15 | |||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.