All names: Gaia DR2 3722280587294958208, LSPM J1404+0746, LP 559-28, USNO-B1.0 0977-00299484, SDSS J140447.44+074614.6, SDSS J140447.44+074614.7, NLTT 36184
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 14 04 47.50 (0.3) | |
| Declination | 07 46 14.39 (0.2) | |
| Spectral type | DQ | |
| 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] | 9.26 (0.3) |
| Distance | [pc] | 107.98 (4) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -202.982 (0.7) |
| Proper motion (declination) | [mas/yr] | 37.098 (0.6) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.60 | |
| V magnitude | ||
| R magnitude | 18.30 | |
| I magnitude | ||
| J magnitude | ||
| H magnitude | ||
| K magnitude | ||
| u magnitude | 19.35 (0.03) | |
| g magnitude | 18.72 (0.009) | |
| r magnitude | 18.50 (0.009) | |
| i magnitude | 18.43 (0.01) | |
| z magnitude | 18.38 (0.03) | |
| G magnitude | 19.04 (0.005) | |
| 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.