All names: Gaia DR2 593783420560219392, SDSS J091805.94+121957.5, Gaia DR3 593783420560219392, Gaia EDR3 593783420560219392, GALEX J091805.9+121958
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|
| Right ascension | 09 18 05.93 (0.9) | 09 18 05.93 | 09 18 05.93 (1) | 09 18 05.94 (0.9) | 09 18 05.94 | |
| Declination | 12 19 57.49 (0.7) | 12 19 57.48 | 12 19 57.49 (2) | 12 19 57.48 (0.7) | 12 19 57.48 | |
| Spectral type | DA | DA | ||||
| Effective temperature | [K] | 25926.0 (974) | ||||
| log(g) | [cgs] | 8.05 (0.2) | ||||
| Mass | [M☉] | 0.66 (0.1) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | -1.39 (1) | ||||
| Distance | [pc] | |||||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -7.219958914 (1) | -7.22 (1) | |||
| Proper motion (declination) | [mas/yr] | 0.654022673 (0.8) | 0.654 (0.8) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 20.01 (0.04) | 20.03 (0.04) | 20.03 (0.04) | |||
| g magnitude | 20.12 (0.02) | 20.15 (0.02) | 20.15 (0.02) | |||
| r magnitude | 20.51 (0.03) | 20.51 (0.04) | 20.51 (0.04) | |||
| i magnitude | 20.84 (0.05) | 20.88 (0.05) | 20.88 (0.05) | |||
| z magnitude | 21.00 (0.2) | 20.98 (0.2) | 20.98 (0.2) | |||
| G magnitude | 20.37 (0.08) | 20.46 | 20.37 (0.007) | |||
| BP magnitude | 20.23 (0.08) | 20.24 | ||||
| RP magnitude | 20.36 (0.1) | 20.43 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| 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.