All names: Gaia DR1 2845145731696691968, UCAC4 593-142703, GALEX J232029.3+282938, Gaia DR2 2845145731696691968, TIC 91131262, GALEXJ23204+2829, 2MASS J23202934+2829385, TYC 2249-1134-1, Gaia DR3 2845145731696691968
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 20 29.34 | 23 20 29.34 (0.01) | ||
| Declination | 28 29 38.44 | 28 29 38.53 (0.01) | ||
| Spectral type | sdB+MS | sdOB+F5IV | ||
| 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] | 1.23 (0.04) | 1.31 (0.02) | |
| Distance | [pc] | 813.27 (25) | 761.27 (1e+01) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.361 (0.06) | 5.682 (0.01) | |
| Proper motion (declination) | [mas/yr] | -5.809 (0.04) | -6.071 (0.01) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.16 (0.09) | |||
| V magnitude | 11.86 (0.08) | |||
| R magnitude | 12.00 (0.05) | |||
| I magnitude | ||||
| J magnitude | 11.25 (0.02) | 11.25 (0.02) | ||
| H magnitude | 11.16 (0.02) | 11.16 (0.02) | ||
| K magnitude | 11.07 (0.02) | 11.07 (0.02) | ||
| u magnitude | 14.79 (0.009) | |||
| g magnitude | 12.34 (0.001) | 11.98 (0.1) | ||
| r magnitude | 11.86 (0.07) | |||
| i magnitude | 12.02 (0.001) | 11.86 (0.07) | ||
| z magnitude | 13.77 (0.01) | |||
| G magnitude | 11.88 (0.0004) | 11.87 (0.003) | ||
| BP magnitude | 12.02 (0.002) | |||
| RP magnitude | 11.60 (0.0009) | |||
| Pan g magnitude | 12.89 (0.005) | |||
| Pan r magnitude | 12.14 (0.08) | |||
| Pan i magnitude | 16.16 (0) | |||
| Pan z magnitude | 13.44 (0.001) | |||
| Pan y magnitude | 12.91 (0) | |||
| E(B-V) | 0.059 | |||
* 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.