All names: Gaia DR3 1101345166494742400, SDSS J071803.31+644745.0, GSC2 N21122127504, MASTER OT J071803.26+644745.0, Gaia 18dhv, Gaia DR2 1101345166494742400, ASASSN -15bq, ZTF18aaahnyx
| Parameter | Unit | Vincent et al. 2024 | Simbad |
|---|---|---|---|
| Right ascension | 07 18 03.33 | 07 18 03.34 (0.07) | |
| Declination | 64 47 44.72 | 64 47 44.82 (0.08) | |
| Spectral type | DQ | 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] | 1.47 | 1.47 (0.1) |
| Distance | [pc] | 680.39 | 680.41 (50) |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -4.36 (0.08) | |
| Proper motion (declination) | [mas/yr] | -6.318 (0.1) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 17.68 (0.4) | ||
| V magnitude | |||
| R magnitude | 16.97 (0.4) | ||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 18.25 (0.01) | ||
| g magnitude | 18.72 (0.008) | ||
| r magnitude | 18.41 (0.008) | ||
| i magnitude | 18.38 (0.009) | ||
| z magnitude | 18.15 (0.03) | ||
| G magnitude | 18.13 | 18.13 (0.01) | |
| BP magnitude | |||
| RP magnitude | |||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.