All names: TIC 80170223, GALEXJ19542-4207, GALEX J195414.6-420704, 2MASS J19541493-4207049, Gaia DR3 6687026108621705216, EC 19507-4214, BPS CS 22964-0098, Gaia DR2 6687026108621705216
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 19 54 14.65 | 19 54 14.93 (0.03) | ||
| Declination | -42 07 04.82 | -42 07 05.03 (0.03) | ||
| Spectral type | sdB | sdB | ||
| 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] | 1.20 (0.06) | 1.20 (0.04) | |
| Distance | [pc] | 833.75 (41) | 830.91 (25) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -7.273 (0.09) | -7.158 (0.04) | |
| Proper motion (declination) | [mas/yr] | -13.586 (0.07) | -13.469 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.71 | |||
| V magnitude | 13.90 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.39 (0.04) | 14.39 (0.04) | ||
| H magnitude | 14.48 (0.06) | 14.48 (0.06) | ||
| K magnitude | 14.43 (0.07) | 14.43 (0.07) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.90 (0.0008) | 13.88 (0.003) | ||
| BP magnitude | 13.72 (0.005) | |||
| RP magnitude | 14.09 (0.004) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.037 | |||
* 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.