All names: Gaia DR3 3662337755969295872, SDSS J134515.39+000837.8, SDSS J134515.40+000837.8, Gaia DR2 3662337751674041088, SDSS J134515.40+000837.82, MGC 50558, 2QZ J134515.4+000837, Gaia EDR3 3662337755969295872, GALEX J134515.4+000837
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 45 15.40 (0.3) | 13 45 15.40 | 13 45 15.40 (0.6) | 13 45 15.39 (0.3) | |||||
| Declination | 00 08 37.80 (0.2) | 00 08 37.83 | 00 08 37.80 (0.3) | 00 08 37.83 (0.2) | |||||
| Spectral type | DA+M | DA | DA+dM | ||||||
| Effective temperature | [K] | 51890.0 (1749) | 58585.0 (1670) | ||||||
| log(g) | [cgs] | 7.71 (0.1) | 7.85 (0.09) | ||||||
| Mass | [M☉] | 0.56 (0.05) | 0.633 (0.03) | ||||||
| log(Luminosity) | [L☉] | 0.30 (0.1) | |||||||
| Cooling age | [Gyr] | 0.0017 (0.0003) | |||||||
| 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] | 1.11 (0.3) | -0.50 (0.6) | 1.11 (0.3) | |||||
| Distance | [pc] | 899.11 (246) | 899.12 (246) | ||||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 2.281061464 (0.4) | 1.763550239 (0.7) | 2.281 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | -1.337257997 (0.2) | -1.067756805 (0.5) | -1.337 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 18.78 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 18.36 (0.01) | 18.36 (0.02) | 18.36 (0.01) | ||||||
| g magnitude | 18.69 (0.008) | 18.70 (0.01) | 18.69 (0.008) | ||||||
| r magnitude | 19.15 (0.01) | 19.16 (0.02) | 19.15 (0.01) | ||||||
| i magnitude | 19.16 (0.01) | 19.15 (0.02) | 19.16 (0.01) | ||||||
| z magnitude | 18.94 (0.04) | 18.95 (0.04) | 18.94 (0.04) | ||||||
| G magnitude | 18.94 (0.02) | 18.91 | 18.94 (0.004) | ||||||
| BP magnitude | 18.81 (0.02) | 18.74 | |||||||
| RP magnitude | 18.77 (0.03) | 18.72 | |||||||
| Pan g magnitude | 18.77 (0.009) | ||||||||
| Pan r magnitude | 19.16 (0.006) | ||||||||
| Pan i magnitude | 19.19 (0.02) | ||||||||
| Pan z magnitude | 18.97 (0.02) | ||||||||
| Pan y magnitude | 18.85 (0.02) | ||||||||
| E(B-V) | 0.026 | ||||||||
* 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.