All names: Gaia DR2 2108640208592235392, GALEX J182448.7+385139, GALEX J182448.7+385138, Gaia DR3 2108640208592235392, TIC 288845233, O11J182449+385138, UCAC4 645-060768, 2MASS J18244873+3851377
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 24 49.00 | 18 24 48.73 (0.03) | ||
| Declination | 38 51 38.00 | 38 51 37.75 (0.03) | ||
| Spectral type | sd | |||
| 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] | 0.27 (0.06) | 0.24 (0.04) | |
| Distance | [pc] | 3641.66 (850) | 4163.20 (700) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.791 (0.1) | -1.708 (0.04) | |
| Proper motion (declination) | [mas/yr] | -12.118 (0.1) | -11.705 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 16.35 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.15 (0.08) | 16.15 (0.08) | ||
| H magnitude | 16.31 (0.2) | 16.31 (0.2) | ||
| K magnitude | 15.67 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.00 (0.002) | 15.97 (0.003) | ||
| BP magnitude | 15.80 (0.01) | |||
| RP magnitude | 16.11 (0.005) | |||
| Pan g magnitude | 15.86 (0.004) | |||
| Pan r magnitude | 16.21 (0.002) | |||
| Pan i magnitude | 16.46 (0.002) | |||
| Pan z magnitude | 16.66 (0.003) | |||
| Pan y magnitude | 16.78 (0.01) | |||
| E(B-V) | 0.040 | |||
* 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.