All names: Gaia DR2 4486823725632828800, UCAC2 34132381, TIC 302701115, GALEX J173153.7+064706, 2MASS J17315385+0647070, UCAC4 484-066583, GALEXJ17318+0647, Gaia DR3 4486823725632828800
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 31 53.78 | 17 31 53.86 (0.02) | ||
| Declination | 06 47 06.76 | 06 47 07.04 (0.02) | ||
| Spectral type | sdB+WD | sdB | ||
| Effective temperature | [K] | 27780.0 (1030) | ||
| log(g) | [cgs] | 5.35 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.18 (0.07) | 1.18 (0.03) | |
| Distance | [pc] | 846.88 (49) | 847.31 (23) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -17.144 (0.1) | -17.056 (0.03) | |
| Proper motion (declination) | [mas/yr] | -2.823 (0.09) | -2.825 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.87 (0.01) | |||
| V magnitude | 13.74 | |||
| R magnitude | 14.22 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.45 (0.03) | 14.45 (0.03) | ||
| H magnitude | 14.51 (0.06) | 14.51 (0.06) | ||
| K magnitude | 14.60 (0.09) | 14.60 (0.09) | ||
| u magnitude | 13.74 (0.003) | |||
| g magnitude | 13.84 (0.01) | |||
| r magnitude | 14.19 (0.004) | 14.23 (0.01) | ||
| i magnitude | 14.46 (0.004) | 14.40 (0.01) | ||
| z magnitude | 14.73 (0.005) | |||
| G magnitude | 14.01 (0.0006) | 13.99 (0.003) | ||
| BP magnitude | 13.87 (0.008) | |||
| RP magnitude | 14.16 (0.002) | |||
| Pan g magnitude | 13.87 (0.002) | |||
| Pan r magnitude | 14.21 (0.002) | |||
| Pan i magnitude | 14.49 (0.001) | |||
| Pan z magnitude | 14.74 (0.003) | |||
| Pan y magnitude | 14.88 (0.004) | |||
| E(B-V) | 0.160 | |||
* 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.