All names: SDSS J224930.60+054327.65, SDSS J224930.59+054327.6, SDSS J224930.60+054327.6, LAMOST J224930.56+054327.9, Gaia EDR3 2711475942740396672, GALEX J224930.5+054327, Gaia DR2 2711475938444566528, Gaia DR3 2711475942740396672
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 49 30.61 (0.6) | 22 49 30.60 | 22 49 30.61 (1) | 22 49 30.58 (0.6) | ||||||
| Declination | 05 43 27.62 (0.5) | 05 43 27.69 | 05 43 27.63 (1) | 05 43 27.63 (0.5) | ||||||
| Spectral type | DA+M | DA+M | DA+M3 | DA+M3 | ||||||
| Effective temperature | [K] | 37447.0 (459) | 41035.0 (509) | |||||||
| log(g) | [cgs] | 7.83 (0.06) | 8.11 (0.04) | |||||||
| Mass | [M☉] | 0.58 (0.03) | 0.713 (0.02) | |||||||
| log(Luminosity) | [L☉] | -0.38 (0.05) | ||||||||
| Cooling age | [Gyr] | 0.0045 (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] | 2.59 (0.6) | 2.59 (0.6) | |||||||
| Distance | [pc] | 385.66 (86) | 385.67 (86) | |||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 26.74645049 (0.7) | 26.746 (0.7) | |||||||
| Proper motion (declination) | [mas/yr] | -0.803330703 (0.6) | -0.803 (0.6) | |||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 17.53 (0.01) | 17.53 (0.01) | 17.53 (0.01) | |||||||
| g magnitude | 17.61 (0.006) | 17.61 (0.01) | 17.59 (0.005) | |||||||
| r magnitude | 17.50 (0.006) | 17.50 (0.01) | 17.50 (0.006) | |||||||
| i magnitude | 16.60 (0.005) | 16.60 (0.01) | 16.60 (0.005) | |||||||
| z magnitude | 16.02 (0.007) | 16.02 (0.01) | 16.02 (0.007) | |||||||
| G magnitude | 17.42 (0.01) | 17.28 | 17.42 (0.02) | |||||||
| BP magnitude | 17.61 (0.01) | 17.60 | ||||||||
| RP magnitude | 16.21 (0.006) | 16.22 | ||||||||
| Pan g magnitude | 17.65 (0.005) | |||||||||
| Pan r magnitude | 17.52 (0.005) | |||||||||
| Pan i magnitude | 16.70 (0.003) | |||||||||
| Pan z magnitude | 16.15 (0.001) | |||||||||
| Pan y magnitude | 15.89 (0.02) | |||||||||
| E(B-V) | 0.067 | |||||||||
* 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.