All names: WISEA J183948.47+530003.4, GALEX J183948.5+530003, TIC 47756522, WISE J183948.45+530003.5, GALEX J183948.5+530004, Gaia DR3 2145610428081224320, Gaia DR2 2145610428081224320, Gaia EDR3 2145610428081224320, UCAC4 716-059739, 2MASS J18394849+5300033, O11J183949+530004
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 39 48.50 (0.04) | 18 39 49.00 | 18 39 48.50 (0.04) | ||
| Declination | 53 00 03.62 (0.03) | 53 00 04.00 | 53 00 03.70 (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] | 0.39 (0.04) | 0.43 (0.04) | 0.39 (0.04) | |
| Distance | [pc] | 2569.37 (242) | 2335.90 (240) | 2569.37 (242) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.6 (0.05) | -0.5 (0.09) | -0.6 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.755 (0.05) | -4.878 (0.09) | -4.755 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.97 (0.04) | ||||
| V magnitude | 16.07 (0.09) | ||||
| R magnitude | 16.32 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.67 (0.1) | 16.67 (0.1) | |||
| H magnitude | 16.01 | ||||
| K magnitude | 15.98 | ||||
| u magnitude | |||||
| g magnitude | 15.98 (0.01) | ||||
| r magnitude | 16.40 (0.01) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.05 (0.003) | 16.08 (0.002) | 16.05 (0.003) | ||
| BP magnitude | 15.93 (0.005) | 15.84 (0.01) | |||
| RP magnitude | 16.38 (0.01) | 16.33 (0.006) | |||
| Pan g magnitude | 15.90 (0.004) | ||||
| Pan r magnitude | 16.32 (0.002) | ||||
| Pan i magnitude | 16.68 (0.002) | ||||
| Pan z magnitude | 16.94 (0.005) | ||||
| Pan y magnitude | 17.11 (0.005) | ||||
| E(B-V) | 0.034 | ||||
* 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.