All names: Gaia EDR3 635639045092641280, Gaia DR3 635639045092641280, SDSS J091812.22+190234.6, Gaia DR2 635639045092641280, GALEX J091812.2+190235, SDSS J091812.22+190234.7
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 18 12.25 (0.2) | 09 18 12.23 | 09 18 12.25 (0.4) | 09 18 12.25 | 09 18 12.21 (0.2) | 09 18 12.22 | |||
| Declination | 19 02 34.17 (0.2) | 19 02 34.67 | 19 02 34.20 (0.3) | 19 02 34.17 | 19 02 34.96 (0.2) | 19 02 34.70 | |||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 6784.0 (126) | 6791.0 (58) | ||||||
| log(g) | [cgs] | 7.73 (0.05) | 7.37 (0.1) | ||||||
| Mass | [M☉] | 0.442 (0.04) | 0.336 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 9.38 (0.2) | 8.23 (0.5) | 9.38 | 9.38 (0.2) | ||||
| Distance | [pc] | 106.65 (3) | 121.45 (7) | 106.65 | 106.65 (3) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 30.92142846 (0.2) | 32.72021892 (0.7) | 30.921 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -49.21056722 (0.2) | -48.74984187 (0.5) | -49.211 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.85 (0.03) | 18.85 (0.03) | 19.13 (0.03) | ||||||
| g magnitude | 18.27 (0.009) | 18.27 (0.009) | 18.68 (0.02) | ||||||
| r magnitude | 17.72 (0.008) | 17.72 (0.008) | 18.45 (0.2) | ||||||
| i magnitude | 17.39 (0.008) | 17.39 (0.008) | 18.31 (0.2) | ||||||
| z magnitude | 22.83 (1) | 22.83 (1) | 18.52 (0.05) | ||||||
| G magnitude | 18.43 (0.02) | 18.44 | 18.43 | 18.43 (0.003) | |||||
| BP magnitude | 18.53 (0.02) | 18.49 | |||||||
| RP magnitude | 17.81 (0.03) | 17.73 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.005 | ||||||||
* 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.