All names: WD 1423+446, GALEX J142541.8+442412, SDSS J142541.80+442411.7, Gaia EDR3 1492869372972535168, TIC 158019825, SDSS J142541.81+442411.6, Gaia DR2 1492869372972535168, [SGR2010] J1425+4424, 2MASS J14254178+4424115, Gaia DR3 1492869372972535168
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 25 41.79 (0.1) | 14 25 41.81 | 14 25 41.79 (0.1) | 14 25 41.82 (0.1) | 14 25 41.98 | |||
| Declination | 44 24 11.68 (0.1) | 44 24 11.70 | 44 24 11.68 (0.2) | 44 24 11.69 (0.1) | 44 24 07.20 | |||
| Spectral type | D+M3 | WD+M3 | ||||||
| Effective temperature | [K] | |||||||
| log(g) | [cgs] | |||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.90 (0.2) | 1.91 (0.2) | 1.90 (0.2) | ||||
| Distance | [pc] | 526.89 (45) | 523.93 (54) | 526.90 (45) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -19.11712354 (0.1) | -19.49060723 (0.2) | -19.117 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -0.521469211 (0.2) | -0.057997887 (0.3) | -0.521 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 15.97 (0.09) | |||||||
| H magnitude | 15.41 (0.1) | |||||||
| K magnitude | 15.10 (0.2) | |||||||
| u magnitude | 21.24 (0.09) | 21.25 (0.1) | 21.25 | |||||
| g magnitude | 19.96 (0.02) | 19.97 (0.02) | 19.97 | |||||
| r magnitude | 18.88 (0.01) | 18.88 (0.01) | 18.88 | |||||
| i magnitude | 17.80 (0.007) | 17.80 (0.008) | 17.80 | |||||
| z magnitude | 17.16 (0.01) | 17.16 (0.01) | 17.16 | |||||
| G magnitude | 18.48 (0.04) | 18.50 | 18.48 (0.003) | |||||
| BP magnitude | 19.57 (0.04) | 19.59 | ||||||
| RP magnitude | 17.35 (0.009) | 17.37 | ||||||
| Pan g magnitude | 19.83 (0.02) | |||||||
| Pan r magnitude | 18.91 (0.008) | |||||||
| Pan i magnitude | 17.80 (0.004) | |||||||
| Pan z magnitude | 17.28 (0.002) | |||||||
| Pan y magnitude | 17.04 (0.004) | |||||||
| E(B-V) | 0.021 | |||||||
* 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.