All names: ** LDS 1521B, WD 0101+86, WD 0101+866, WDS J01092+8656B, GALEX J010958.1+865629, Gaia EDR3 575658456708126208, LP 1-170, USNO-B1.0 1769-00003161, WDJ010957.33+865629.20, EGGR 408, Gaia DR2 575658456708126208, Gaia DR3 575658456708126208
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 09 59.36 (0.06) | 01 09 59.29 (0.07) | 01 09 59.36 | 01 09 57.32 (0.06) | 01 09 59.29 | 01 09 08.54 | |||||
| Declination | 86 56 29.09 (0.06) | 86 56 29.09 (0.06) | 86 56 29.09 | 86 56 29.20 (0.06) | 86 56 29.09 | 86 56 02.04 | |||||
| Spectral type | DB | DC5 | DC5 | ||||||||
| Effective temperature | [K] | 10896.0 | 11108.0 | 12362.0 (226) | |||||||
| log(g) | [cgs] | 8.32 | 8.28 | 8.44 (0.02) | |||||||
| Mass | [M☉] | 0.807 | 0.76 | 0.868 (0.02) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.7852 | 0.7261 | ||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 10.07 (0.06) | 10.01 (0.08) | 10.07 | 10.07 (0.06) | 10.01 (0.08) | |||||
| Distance | [pc] | 99.32 (0.6) | 99.85 (0.8) | 99.32 | 99.32 (0.6) | 99.85 (0.8) | |||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 101.6337995 (0.08) | 101.583 (0.1) | 101.634 (0.08) | 101.5833512 | ||||||
| Proper motion (declination) | [mas/yr] | -6.765887149 (0.08) | -6.828 (0.1) | -6.766 (0.07) | -6.828469417 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.70 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 16.10 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 17.38 (0.008) | 17.41 | 17.38 | 17.38 (0.003) | 17.41 | ||||||
| BP magnitude | 17.36 (0.008) | 17.34 | 17.33 | ||||||||
| RP magnitude | 17.40 (0.01) | 17.38 | 17.38 | ||||||||
| Pan g magnitude | 17.36 (0.01) | ||||||||||
| Pan r magnitude | 17.50 (0.007) | ||||||||||
| Pan i magnitude | 17.74 (0.006) | ||||||||||
| Pan z magnitude | 17.89 (0.02) | ||||||||||
| Pan y magnitude | 17.75 (0.04) | ||||||||||
| E(B-V) | 0.005 | ||||||||||
* 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.