All names: SDSS J010055.32+074758.9, GALEX J010055.2+074759, SDSS J010055.33+074758.85, SDSS J010055.33+074758.8, PB 6238, Gaia EDR3 2577691692904123392, LAMOST J010055.32+074758.8, Gaia DR2 2577691692904123392, Gaia DR3 2577691692904123392
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 00 55.33 (0.2) | 01 00 55.33 | 01 00 55.33 (0.3) | 01 00 55.33 (0.2) | |||||
| Declination | 07 47 58.80 (0.1) | 07 47 58.91 | 07 47 58.81 (0.2) | 07 47 59.01 (0.1) | |||||
| Spectral type | DA+M4 | DA+M4 | DA+MS | ||||||
| Effective temperature | [K] | 21045.0 (557) | |||||||
| log(g) | [cgs] | 7.91 (0.1) | |||||||
| Mass | [M☉] | 0.58 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.20 (0.2) | 2.12 (0.3) | 2.20 (0.2) | |||||
| Distance | [pc] | 455.17 (50) | 470.74 (73) | 455.17 (50) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 1.162271538 (0.3) | 1.51047512 (0.6) | 1.162 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | -13.0848821 (0.2) | -12.95234669 (0.3) | -13.085 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | 18.50 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.23 (0.03) | 19.23 (0.03) | 19.23 (0.03) | ||||||
| g magnitude | 18.98 (0.01) | 18.98 (0.01) | 18.98 (0.01) | ||||||
| r magnitude | 19.21 (0.01) | 19.21 (0.01) | 19.21 (0.01) | ||||||
| i magnitude | 19.07 (0.02) | 19.07 (0.02) | 19.07 (0.02) | ||||||
| z magnitude | 18.65 (0.05) | 18.65 (0.05) | 18.65 (0.05) | ||||||
| G magnitude | 18.96 (0.02) | 18.99 | 18.96 (0.004) | ||||||
| BP magnitude | 19.13 (0.02) | 19.09 | |||||||
| RP magnitude | 18.58 (0.03) | 18.42 | |||||||
| Pan g magnitude | 19.01 (0.008) | ||||||||
| Pan r magnitude | 19.18 (0.01) | ||||||||
| Pan i magnitude | 19.01 (0.006) | ||||||||
| Pan z magnitude | 18.66 (0.009) | ||||||||
| Pan y magnitude | 18.41 (0.02) | ||||||||
| E(B-V) | 0.032 | ||||||||
* 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.