All names: Gaia DR2 3849555925862471808, GALEX J094927.6+042508, Gaia EDR3 3849555925862471808, Gaia DR3 3849555925862471808, LAMOST J094927.63+042508.8, SDSS J094927.58+042508.3, SDSS J094927.59+042508.40, SDSS J094927.59+042508.4, SDSS J094927.59+042508.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 49 27.59 (0.09) | 09 49 27.58 | 09 49 27.59 (0.1) | 09 49 27.59 | 09 49 27.59 (0.09) | |||||||
| Declination | 04 25 08.36 (0.07) | 04 25 08.38 | 04 25 08.36 (0.1) | 04 25 08.36 | 04 25 08.39 (0.07) | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 38139.0 (309) | 40032.0 (283) | 49822.0 (6548) | ||||||||
| log(g) | [cgs] | 7.76 (0.04) | 7.98 (0.03) | 8.04 (0.07) | ||||||||
| Mass | [M☉] | 0.55 (0.02) | 0.652 (0.01) | 0.71 (0.06) | ||||||||
| log(Luminosity) | [L☉] | -0.30 (0.03) | ||||||||||
| Cooling age | [Gyr] | 0.0042 (0.0002) | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 2.45 (0.1) | 2.68 (0.1) | 2.45 | 2.45 (0.1) | |||||||
| Distance | [pc] | 408.17 (17) | 373.56 (18) | 408.17 | 408.18 (17) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.168135156 (0.1) | 2.19117988 (0.2) | 2.168 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -1.426167548 (0.07) | -1.630818366 (0.2) | -1.426 (0.07) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 18.05 (0.04) | |||||||||||
| H magnitude | 18.00 (0.1) | |||||||||||
| K magnitude | 18.40 (0.3) | |||||||||||
| u magnitude | 16.77 (0.007) | 16.78 (0.02) | 16.77 (0.007) | |||||||||
| g magnitude | 17.09 (0.004) | 17.11 (0.02) | 17.09 (0.004) | |||||||||
| r magnitude | 17.60 (0.005) | 17.61 (0.01) | 17.60 (0.005) | |||||||||
| i magnitude | 17.95 (0.008) | 17.96 (0.02) | 17.95 (0.008) | |||||||||
| z magnitude | 18.32 (0.02) | 18.32 (0.03) | 18.32 (0.02) | |||||||||
| G magnitude | 17.34 (0.008) | 17.38 | 17.34 | 17.34 (0.003) | ||||||||
| BP magnitude | 17.20 (0.008) | 17.17 | ||||||||||
| RP magnitude | 17.67 (0.01) | 17.66 | ||||||||||
| Pan g magnitude | 17.16 (0.006) | |||||||||||
| Pan r magnitude | 17.61 (0.005) | |||||||||||
| Pan i magnitude | 17.97 (0.004) | |||||||||||
| Pan z magnitude | 18.24 (0.007) | |||||||||||
| Pan y magnitude | 18.49 (0.02) | |||||||||||
| E(B-V) | 0.025 | |||||||||||
* 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.