All names: SDSS J204431.40-061440.2, TIC 51572023, SDSS J204431.44-061440.2, SDSS J204431.43-061440.2, Gaia DR3 6913377379111163264, Gaia EDR3 6913377379111163264, Gaia DR2 6913377374815465728, WD 2041-064, WIRED J204431.44-061440.2, GALEX J204431.4-061439, 2MASS J20443144-0614402
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 44 31.43 (0.3) | 20 44 31.44 | 20 44 31.43 (0.4) | 20 44 31.44 (0.3) | 20 44 31.44 | 20 44 31.39 | 20 44 31.44 | |||
| Declination | -06 14 40.14 (0.2) | -06 14 40.23 | -06 14 40.14 (0.3) | -06 14 40.22 (0.2) | -06 14 40.24 | -06 14 35.16 | -06 14 40.24 | |||
| Spectral type | DA+M1 | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (2) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 7.88 (0.2) | 5.00 (0.004) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 4.02 (0.4) | 6.77 (0.5) | 4.02 (0.4) | ||||||
| Distance | [pc] | 248.83 (24) | 147.80 (11) | 248.83 (24) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -5.941356959 (0.4) | -19.08170766 (0.9) | -5.941 (0.4) | ||||||
| Proper motion (declination) | [mas/yr] | 5.054838112 (0.3) | -1.359425433 (0.6) | 5.055 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 14.23 (0.05) | |||||||||
| H magnitude | 13.53 (0.05) | |||||||||
| K magnitude | 13.44 (0.05) | |||||||||
| u magnitude | 18.23 (0.02) | 18.23 (0.01) | 18.25 (0.02) | 18.25 | 18.23 (0.02) | |||||
| g magnitude | 17.46 (0.006) | 17.44 (0.005) | 17.49 (0.01) | 17.49 | 17.47 (0.01) | |||||
| r magnitude | 16.53 (0.005) | 16.52 (0.005) | 16.59 (0.01) | 16.59 | 16.56 (0.01) | |||||
| i magnitude | 15.82 (0.005) | 15.82 (0.005) | 15.88 (0.05) | 15.88 | 15.85 (0.05) | |||||
| z magnitude | 15.43 (0.006) | 15.42 (0.006) | 15.48 (0.01) | 15.48 | 15.43 (0.01) | |||||
| G magnitude | 16.51 (0.005) | 16.44 | 16.51 (0.004) | |||||||
| BP magnitude | 17.15 (0.005) | 17.16 | ||||||||
| RP magnitude | 15.46 (0.002) | 15.49 | ||||||||
| Pan g magnitude | 17.40 (0.004) | |||||||||
| Pan r magnitude | 16.58 (0.003) | |||||||||
| Pan i magnitude | 15.88 (0.002) | |||||||||
| Pan z magnitude | 15.54 (0.003) | |||||||||
| Pan y magnitude | 15.35 (0.003) | |||||||||
| E(B-V) | 0.028 | |||||||||
* 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.