All names: 2MASS J18545887-5609538, Gaia DR3 6637864504204014080, GALEX J185458.8-560954, Gaia EDR3 6637864706065773184, GALEXJ18549-5609, DENIS J185458.9-560953, TIC 379352979, UCAC4 170-199847, Gaia DR2 6637864504204014080
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 54 56.33 (0.5) | 18 54 58.89 | 18 54 58.88 (0.03) | ||
| Declination | -56 09 07.73 (0.5) | -56 09 54.25 | -56 09 53.94 (0.02) | ||
| 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] | 1.04 (0.6) | 1.10 (0.07) | 0.94 (0.04) | |
| Distance | [pc] | 959.60 (538) | 911.33 (54) | 1064.51 (42) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.986 (0.6) | 2.828 (0.08) | 3.082 (0.03) | |
| Proper motion (declination) | [mas/yr] | -5.244 (0.5) | -12.294 (0.07) | -12.368 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.36 (0.1) | ||||
| V magnitude | 14.47 (0.05) | ||||
| R magnitude | 14.81 (0.1) | ||||
| I magnitude | 14.84 (0.03) | ||||
| J magnitude | 14.98 (0.05) | 14.98 (0.05) | |||
| H magnitude | 15.13 (0.08) | 15.13 (0.08) | |||
| K magnitude | 15.15 (0.2) | 15.15 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.28 (0.01) | ||||
| r magnitude | 14.59 (0.01) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.41 (0.008) | 14.56 (0.0007) | 14.54 (0.003) | ||
| BP magnitude | 20.69 (0.1) | 14.38 (0.007) | |||
| RP magnitude | 20.01 (0.1) | 14.75 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.056 | ||||
* 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.