All names: Gaia EDR3 6441249834922815744, EC19507-6227, UCAC4 139-186245, Gaia DR2 6441202968239375616, EC 19507-6227, GALEX J195509.9-622001, Gaia DR3 6441202968239375616, TIC 352290247, 2MASS J19550992-6220024
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 54 54.54 (0.3) | 19 55 10.21 | 19 55 09.97 (0.03) | ||
| Declination | -62 19 35.40 (0.4) | -62 20 01.68 | -62 20 03.08 (0.04) | ||
| 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] | 1.24 (0.5) | 0.46 (0.07) | 0.44 (0.05) | |
| Distance | [pc] | 808.28 (323) | 2175.33 (320) | 2257.34 (262) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.603 (0.4) | 7.972 (0.07) | 8.103 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.59 (0.5) | -4.846 (0.09) | -4.949 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.88 | ||||
| V magnitude | 16.02 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.47 (0.1) | 16.47 (0.1) | |||
| H magnitude | 16.32 (0.3) | 16.32 (0.3) | |||
| K magnitude | 15.99 (0.3) | 15.99 (0.3) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.13 (0.005) | 16.08 (0.001) | 16.06 (0.003) | ||
| BP magnitude | 20.51 (0.1) | 15.91 (0.007) | |||
| RP magnitude | 19.72 (0.07) | 16.26 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.046 | ||||
* 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.