All names: GALEX J112009.8+085641, SDSS J112009.91+085641.8, SDSS J112009.89+085642.0, Gaia DR2 3914835614830647936, SDSS J112009.89+085641.9, Gaia EDR3 3914835614830647936, Gaia DR3 3914835614830647936
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Koester & Kepler 2015 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 20 09.91 (0.3) | 11 20 09.89 | 11 20 09.91 (0.5) | 11 20 09.89 (0.3) | 11 20 09.89 | |||||
| Declination | 08 56 41.79 (0.2) | 08 56 41.98 | 08 56 41.79 (0.3) | 08 56 41.98 (0.2) | 08 56 41.99 | |||||
| Spectral type | DBAZH+M | DBAZHM: | DB+MS | |||||||
| Effective temperature | [K] | 16673.0 (137) | 17470.0 (194) | |||||||
| log(g) | [cgs] | 8.11 (0.09) | 8.27 (0.09) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | -4.87 (0.6) | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | <-6.23 | |||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 2.39 (0.3) | 2.36 (0.5) | 2.39 (0.3) | ||||||
| Distance | [pc] | 418.25 (50) | 424.39 (85) | 361.00 | 418.25 (50) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 19.96598979 (0.4) | 20.35444422 (1) | 19.966 (0.4) | ||||||
| Proper motion (declination) | [mas/yr] | -12.10164383 (0.3) | -12.73629048 (0.6) | -12.102 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | |||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.88 (0.02) | 18.88 (0.02) | 18.89 (0.02) | |||||||
| g magnitude | 18.99 (0.01) | 18.99 (0.01) | 19.01 (0.03) | |||||||
| r magnitude | 19.31 (0.01) | 19.31 (0.01) | 19.33 (0.02) | |||||||
| i magnitude | 19.53 (0.02) | 19.53 (0.02) | 19.52 (0.02) | |||||||
| z magnitude | 19.70 (0.08) | 19.70 (0.07) | 19.68 (0.08) | |||||||
| G magnitude | 19.17 (0.03) | 19.21 | 19.17 (0.004) | |||||||
| BP magnitude | 19.16 (0.03) | 19.07 | ||||||||
| RP magnitude | 19.34 (0.07) | 19.40 | ||||||||
| Pan g magnitude | 19.03 (0.01) | |||||||||
| Pan r magnitude | 19.35 (0.009) | |||||||||
| Pan i magnitude | 19.61 (0.006) | |||||||||
| Pan z magnitude | 19.83 (0.02) | |||||||||
| Pan y magnitude | 19.87 (0.03) | |||||||||
| E(B-V) | 0.027 | |||||||||
* 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.