All names: Gaia DR2 1317956898562626176, NLTT 42650, SDSS J162240.07+291912.1, USNO-B1.0 1193-00244026, WD 1620+294, LSPM J1622+2919, LP 330-6, SDSS J162240.08+291912.2
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 16 22 40.15 (0.1) | |
| Declination | 29 19 12.92 (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] | 21.07 (0.2) |
| Distance | [pc] | 47.46 (0.5) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -294.596 (0.3) |
| Proper motion (declination) | [mas/yr] | -220.349 (0.4) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 20.50 | |
| V magnitude | ||
| R magnitude | 18.60 | |
| I magnitude | ||
| J magnitude | 17.46 (0.02) | |
| H magnitude | 17.36 (0.04) | |
| K magnitude | 17.30 (0.08) | |
| u magnitude | 21.99 (0.2) | |
| g magnitude | 19.85 (0.01) | |
| r magnitude | 18.88 (0.01) | |
| i magnitude | 18.49 (0.01) | |
| z magnitude | 18.33 (0.03) | |
| G magnitude | 18.92 (0.002) | |
| 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.