All names: Gaia DR2 1756279128824638848, SDSS J203820.65+133641.4, TIC 456695365, Gaia DR3 1756279128824638848, GALEX J203820.6+133641, SDSSJ203820.65+133641.4, 2MASS J20382063+1336415, Gaia EDR3 1756279128824638848
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 38 20.65 (0.04) | 20 38 20.66 | 20 38 20.66 (0.04) | ||
| Declination | 13 36 41.34 (0.03) | 13 36 41.40 | 13 36 41.39 (0.03) | ||
| Spectral type | sd | 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] | 0.84 (0.06) | 0.63 (0.07) | 0.84 (0.06) | |
| Distance | [pc] | 1193.60 (84) | 1583.78 (186) | 1193.60 (84) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.079 (0.06) | -1.888 (0.1) | -2.079 (0.06) | |
| Proper motion (declination) | [mas/yr] | -3.281 (0.05) | -3.269 (0.09) | -3.281 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.13 (0.09) | 16.13 (0.09) | |||
| H magnitude | 17.10 | ||||
| K magnitude | 15.78 (0.2) | ||||
| u magnitude | 15.35 (0.004) | 15.39 (0.02) | |||
| g magnitude | 15.40 (0.003) | 15.45 (0.01) | |||
| r magnitude | 15.83 (0.004) | 15.83 (0.01) | |||
| i magnitude | 16.13 (0.005) | 16.16 (0.002) | |||
| z magnitude | 16.37 (0.008) | 16.36 (0.01) | |||
| G magnitude | 15.65 (0.003) | 15.67 (0.0008) | 15.65 (0.003) | ||
| BP magnitude | 15.54 (0.004) | 15.50 (0.004) | |||
| RP magnitude | 15.81 (0.005) | 15.81 (0.002) | |||
| Pan g magnitude | 15.49 (0.004) | ||||
| Pan r magnitude | 15.87 (0.003) | ||||
| Pan i magnitude | 16.16 (0.002) | ||||
| Pan z magnitude | 16.40 (0.005) | ||||
| Pan y magnitude | 16.53 (0.009) | ||||
| E(B-V) | 0.095 | ||||
* 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.