All names: Gaia DR2 1433166540130924544, SDSS J172257.78+575250.6, LP 102-373, WD 1722+579, SDSS J172257.77+575250.6, LSPM J1722+5752, NLTT 44731, SDSS J172257.78+575250.7
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 17 22 57.78 (0.2) | |
| Declination | 57 52 50.53 (0.2) | |
| Spectral type | DC | |
| 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] | 16.24 (0.2) |
| Distance | [pc] | 61.57 (0.8) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -37.102 (0.4) |
| Proper motion (declination) | [mas/yr] | 394.317 (0.5) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.40 | |
| V magnitude | ||
| R magnitude | 17.80 | |
| I magnitude | ||
| J magnitude | 17.74 (0.04) | |
| H magnitude | 17.84 (0.05) | |
| K magnitude | 18.75 (0.1) | |
| u magnitude | 20.43 (0.05) | |
| g magnitude | 19.26 (0.01) | |
| r magnitude | 18.79 (0.01) | |
| i magnitude | 18.54 (0.01) | |
| z magnitude | 18.46 (0.03) | |
| G magnitude | 18.79 (0.004) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.