All names: Gaia DR3 6858924306263296768, EC 20452-1746, BPS CS 22880-0100, EC20452-1746, Gaia DR2 6858924306263296768, UCAC4 363-195331, 2MASS J20480604-1735193, GALEX J204806.0-173519
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 48 06.19 | 20 48 06.04 (0.03) | ||
| Declination | -17 35 17.56 | -17 35 19.37 (0.02) | ||
| Spectral type | sdOB+MS | sdOB+ | ||
| 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] | 0.32 (0.05) | 0.29 (0.04) | |
| Distance | [pc] | 3119.15 (491) | 3444.71 (427) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.275 (0.09) | 2.35 (0.04) | |
| Proper motion (declination) | [mas/yr] | -6.068 (0.05) | -6.129 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.51 | |||
| V magnitude | 15.39 | |||
| R magnitude | 15.85 | |||
| I magnitude | ||||
| J magnitude | 14.82 (0.04) | 14.82 (0.04) | ||
| H magnitude | 14.71 (0.06) | 14.71 (0.06) | ||
| K magnitude | 14.62 (0.1) | 14.62 (0.1) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.33 (0.0005) | 15.31 (0.003) | ||
| BP magnitude | 15.37 (0.003) | |||
| RP magnitude | 15.12 (0.004) | |||
| Pan g magnitude | 21.96 (0.0001) | |||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.038 | |||
* 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.