All names: GALEX J204647.2+021805, TIC 466928464, Gaia DR3 4231888971047616768, SDSS J204647.27+021805.4, [SGR2010] J2046+0218, Gaia EDR3 4231888971047616768, Gaia DR2 4231888966750750592, 2MASS J20464725+0218054, SDSS J204647.28+021805.5, WIRED J204647.27+021805.4, WD 2044+021
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|
| Right ascension | 20 46 47.28 (1) | 20 46 47.28 (1) | 20 46 46.85 | 20 46 47.28 | ||
| Declination | 02 18 05.70 (0.7) | 02 18 05.70 (0.7) | 02 18 02.52 | 02 18 05.49 | ||
| Spectral type | DB+M3 | DB+M3 | DB+M | |||
| Effective temperature | [K] | 15413.0 (57) | ||||
| log(g) | [cgs] | 8.28 (0.05) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | |||||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | |||||
| Proper motion (declination) | [mas/yr] | |||||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | WDMS | ||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 13.77 (0.03) | |||||
| H magnitude | 13.20 (0.03) | |||||
| K magnitude | 12.95 (0.03) | |||||
| u magnitude | 17.19 (0.01) | 17.18 | 17.19 (0.02) | |||
| g magnitude | 17.08 (0.01) | 17.04 | 17.08 (0.01) | |||
| r magnitude | 16.68 (0.01) | 16.66 | 16.68 (0.01) | |||
| i magnitude | 15.77 (0.01) | 15.75 | 15.77 (0.01) | |||
| z magnitude | 15.14 (0.02) | 15.12 | 15.14 (0.02) | |||
| G magnitude | 16.56 (0.004) | 16.56 (0.01) | ||||
| BP magnitude | 16.97 (0.004) | |||||
| RP magnitude | 15.32 (0.003) | |||||
| Pan g magnitude | 17.03 (0.003) | |||||
| Pan r magnitude | 16.71 (0.006) | |||||
| Pan i magnitude | 15.81 (0.003) | |||||
| Pan z magnitude | 15.27 (0.002) | |||||
| Pan y magnitude | 15.01 (0.003) | |||||
| E(B-V) | ||||||
* 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.