All names: ** LDS 1939A, LP 46-147, Gaia DR2 2275403442116288000, WD 2041+731, EGGR 500, TIC 352409225, WDS J20408+7319A, USNO-B1.0 1633-00117991, WD 2041+73, Gaia DR3 2275403442116288000, 2MASS J20404002+7319223, Gaia EDR3 2275403442116288000
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|
| Right ascension | 20 40 39.94 (0.1) | 20 40 39.94 (0.2) | 20 40 39.94 (0.1) | 20 40 44.59 | ||
| Declination | 73 19 22.71 (0.1) | 73 19 22.71 (0.2) | 73 19 22.63 (0.1) | 73 18 47.16 | ||
| Spectral type | DC9 | DC9 | ||||
| Effective temperature | [K] | |||||
| log(g) | [cgs] | |||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 0.20 (0.1) | 0.20 (0.2) | 0.20 (0.1) | ||
| Distance | [pc] | 5070.00 (3360) | 5094.24 (4002) | 5070.99 (3361) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -0.905379729 (0.2) | -0.525 (0.3) | -0.905 (0.2) | ||
| Proper motion (declination) | [mas/yr] | 4.599463252 (0.2) | 5.369 (0.4) | 4.599 (0.2) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | yes | |||||
| B magnitude | 19.20 | |||||
| V magnitude | ||||||
| R magnitude | 18.10 | |||||
| I magnitude | ||||||
| J magnitude | 16.33 (0.1) | |||||
| H magnitude | 15.84 (0.2) | |||||
| K magnitude | 15.47 (0.2) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 18.33 (0.03) | 18.35 | 18.33 (0.003) | |||
| BP magnitude | 19.09 (0.03) | 19.10 | ||||
| RP magnitude | 17.50 (0.02) | 17.49 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.207 | |||||
* 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.