All names: GALEXJ19485-4225, UCAC4 238-173633, 2MASS J19483332-4225465, EC 19450-4233, TIC 79921794, Gaia DR2 6688554361064931456, GALEX J194833.5-422547, Gaia DR3 6688554361064931456
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 48 33.07 | 19 48 33.32 (0.04) | ||
| Declination | -42 25 45.57 | -42 25 46.65 (0.03) | ||
| Spectral type | sdOB+F | sdOB+F | ||
| 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] | 0.24 (0.07) | 0.29 (0.05) | |
| Distance | [pc] | 4242.68 (1337) | 3484.32 (623) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.611 (0.1) | 5.506 (0.05) | |
| Proper motion (declination) | [mas/yr] | 3.344 (0.07) | 3.298 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.91 (0.03) | |||
| V magnitude | 15.28 (0.01) | |||
| R magnitude | 15.74 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.84 (0.07) | 15.84 (0.07) | ||
| H magnitude | 16.04 (0.2) | 16.04 (0.2) | ||
| K magnitude | 15.58 | |||
| u magnitude | ||||
| g magnitude | 14.91 (0.01) | |||
| r magnitude | 15.38 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.15 (0.0009) | 15.13 (0.003) | ||
| BP magnitude | 14.88 (0.007) | |||
| RP magnitude | 15.46 (0.005) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| 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.