All names: Gaia DR2 4471636686912099456, 2MASS J18103204+0539103, UCAC4 479-074358, GALEX J181032.0+053909, TIC 338589671, GALEXJ18105+0539, UCAC2 33788597, Gaia DR3 4471636686912099456
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 10 32.03 | 18 10 32.03 (0.03) | ||
| Declination | 05 39 10.38 | 05 39 10.22 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 31890.0 (460) | ||
| log(g) | [cgs] | 5.81 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.68 (0.05) | 1.78 (0.03) | |
| Distance | [pc] | 595.77 (18) | 561.26 (10) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.578 (0.09) | -1.549 (0.04) | |
| Proper motion (declination) | [mas/yr] | -17.299 (0.08) | -17.316 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.60 (0.03) | |||
| V magnitude | 13.76 (0.04) | |||
| R magnitude | 14.05 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.22 (0.03) | 14.22 (0.03) | ||
| H magnitude | 14.27 (0.04) | 14.27 (0.04) | ||
| K magnitude | 14.58 (0.09) | 14.58 (0.09) | ||
| u magnitude | ||||
| g magnitude | 13.58 (0.04) | |||
| r magnitude | 13.96 (0.03) | |||
| i magnitude | 14.55 (0.3) | |||
| z magnitude | ||||
| G magnitude | 13.74 (0.0008) | 13.72 (0.003) | ||
| BP magnitude | 13.56 (0.009) | |||
| RP magnitude | 13.91 (0.002) | |||
| Pan g magnitude | 13.59 (0.01) | |||
| Pan r magnitude | 13.93 (0.0004) | |||
| Pan i magnitude | 14.25 (0.002) | |||
| Pan z magnitude | 14.49 (0.002) | |||
| Pan y magnitude | 14.66 (0.004) | |||
| E(B-V) | 0.128 | |||
* 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.