All names: GALEXJ17278+1644, Gaia DR2 4550114402362108416, Gaia DR3 4550114402362108416, GALEX J172748.4+164456, TIC 394020645, LAMOST J172748.37+164457.3, 2MASS J17274838+1644574, UCAC4 534-063421
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 27 48.43 | 17 27 48.38 (0.04) | ||
| Declination | 16 44 56.52 | 16 44 57.32 (0.04) | ||
| Spectral type | sdB | sdB+K7V | ||
| Effective temperature | [K] | 28210.0 (550) | ||
| log(g) | [cgs] | 5.27 (0.09) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.26 (0.06) | 1.13 (0.06) | |
| Distance | [pc] | 796.50 (35) | 885.82 (45) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.106 (0.08) | -0.438 (0.05) | |
| Proper motion (declination) | [mas/yr] | -37.152 (0.09) | -37.447 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.51 (0.02) | |||
| V magnitude | 13.54 (0.01) | |||
| R magnitude | 13.64 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.33 (0.02) | 13.33 (0.02) | ||
| H magnitude | 13.06 (0.03) | 13.06 (0.03) | ||
| K magnitude | 12.99 (0.03) | 12.99 (0.03) | ||
| u magnitude | ||||
| g magnitude | 13.45 (0.02) | |||
| r magnitude | 13.68 (0.03) | |||
| i magnitude | 13.86 (0.04) | |||
| z magnitude | ||||
| G magnitude | 13.49 (0.0006) | 13.48 (0.003) | ||
| BP magnitude | 13.41 (0.007) | |||
| RP magnitude | 13.50 (0.003) | |||
| Pan g magnitude | 13.43 (0.0001) | |||
| Pan r magnitude | 13.65 (0.001) | |||
| Pan i magnitude | 13.86 (0.001) | |||
| Pan z magnitude | 13.97 (0.004) | |||
| Pan y magnitude | 14.04 (0.008) | |||
| E(B-V) | 0.070 | |||
* 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.