All names: USNO-B1.0 1126-00180955, 2MASS J08044064+2239502, LP 366-38, SDSS J080440.63+223948.6, Gaia DR2 680099824985004288, SDSS J080440.63+223948.7, WD 0801+228, LSPM J0804+2239, NLTT 18891
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 08 04 40.63 (0.1) | |
| Declination | 22 39 49.68 (0.07) | |
| Spectral type | DZ | |
| 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] | 25.28 (0.1) |
| Distance | [pc] | 39.56 (0.2) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 1.644 (0.2) |
| Proper motion (declination) | [mas/yr] | -324.04 (0.1) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 19.00 | |
| V magnitude | ||
| R magnitude | 17.50 | |
| I magnitude | ||
| J magnitude | 16.71 (0.04) | |
| H magnitude | 16.69 (0.01) | |
| K magnitude | 17.29 (0.06) | |
| u magnitude | 19.78 (0.03) | |
| g magnitude | 18.28 (0.007) | |
| r magnitude | 17.60 (0.006) | |
| i magnitude | 17.39 (0.006) | |
| z magnitude | 17.31 (0.01) | |
| G magnitude | 17.67 (0.001) | |
| 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.