All names: SDSS J094431.70+252136.4, Gaia DR2 646353064349085440, Gaia EDR3 646353064349085440, Gaia DR3 646353064349085440, GALEX J094431.7+252136, SDSS J094431.69+252136.2, SDSS J094431.70+252136.3, SDSS J094431.69+252136.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 44 31.67 (0.3) | 09 44 31.69 | 09 44 31.67 | 09 44 31.69 (0.3) | 09 44 31.70 | ||||
| Declination | 25 21 36.41 (0.3) | 25 21 36.27 | 25 21 36.41 | 25 21 36.21 (0.3) | 25 21 36.36 | ||||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 10782.0 (427) | 10696.0 (100) | ||||||
| log(g) | [cgs] | 8.63 (0.07) | 8.95 (0.09) | ||||||
| Mass | [M☉] | 1.003 (0.05) | 1.143 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 6.40 (0.3) | 6.40 | 6.40 (0.3) | |||||
| Distance | [pc] | 156.27 (6) | 156.27 | 156.27 (6) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -17.90255117 (0.3) | -17.903 (0.3) | ||||||
| Proper motion (declination) | [mas/yr] | 12.61975932 (0.3) | 12.62 (0.3) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.27 (0.03) | 19.27 (0.03) | 19.30 (0.03) | ||||||
| g magnitude | 18.96 (0.009) | 18.96 (0.009) | 18.99 (0.03) | ||||||
| r magnitude | 19.09 (0.01) | 19.09 (0.01) | 19.08 (0.02) | ||||||
| i magnitude | 19.16 (0.02) | 19.16 (0.02) | 19.16 (0.03) | ||||||
| z magnitude | 19.45 (0.06) | 19.45 (0.06) | 19.35 (0.07) | ||||||
| G magnitude | 18.97 (0.02) | 18.97 | 18.97 (0.003) | ||||||
| BP magnitude | 19.02 (0.02) | ||||||||
| RP magnitude | 18.97 (0.03) | ||||||||
| Pan g magnitude | 18.96 (0.007) | ||||||||
| Pan r magnitude | 19.07 (0.01) | ||||||||
| Pan i magnitude | 19.21 (0.008) | ||||||||
| Pan z magnitude | 19.39 (0.02) | ||||||||
| Pan y magnitude | 19.32 (0.05) | ||||||||
| E(B-V) | 0.009 | ||||||||
* 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.