All names: Gaia DR3 6753564738407011712, UCAC4 310-255549, WISE J194948.45-280647.6, UCAC2 20279813, DENIS J194948.4-280647, GALEXJ19498-2806, Gaia DR2 6753564738407011712, WISEA J194948.45-280647.7, Gaia EDR3 6753564738407011712, 2MASS J19494846-2806476, GALEX J194948.6-280647, TIC 398450188
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 19 49 48.45 (0.03) | 19 49 48.62 | 19 49 48.46 (0.03) | ||
| Declination | -28 06 47.75 (0.03) | -28 06 47.18 | -28 06 47.68 (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] | 2.36 (0.04) | 2.29 (0.06) | 2.36 (0.04) | |
| Distance | [pc] | 423.39 (7) | 436.40 (11) | 423.39 (7) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.352 (0.04) | -8.316 (0.1) | -8.352 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.247 (0.03) | -4.261 (0.07) | -4.247 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.85 (0.01) | ||||
| V magnitude | 13.05 (0.02) | ||||
| R magnitude | 13.29 (0.07) | ||||
| I magnitude | 13.24 (0.02) | ||||
| J magnitude | 13.54 (0.03) | 13.54 (0.03) | |||
| H magnitude | 13.65 (0.02) | 13.65 (0.02) | |||
| K magnitude | 13.72 (0.04) | 13.72 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 12.99 (0.003) | 13.01 (0.0007) | 12.99 (0.003) | ||
| BP magnitude | 12.87 (0.003) | 12.81 (0.006) | |||
| RP magnitude | 13.22 (0.004) | 13.22 (0.0009) | |||
| Pan g magnitude | 12.85 | ||||
| Pan r magnitude | 13.26 | ||||
| Pan i magnitude | 13.56 (0.001) | ||||
| Pan z magnitude | 13.80 (0.003) | ||||
| Pan y magnitude | 13.99 (0.005) | ||||
| E(B-V) | 0.101 | ||||
* 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.