All names: Gaia DR3 2865951519648132608, GALEX J233159.0+281522, Gaia DR2 2865951519648132608, UCAC4 592-138315, GALEXJ23319+2815, 2MASS J23315890+2815223, GALEX J233158.9+281522
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 31 59.03 | 23 31 58.90 (0.02) | ||
| Declination | 28 15 22.34 | 28 15 22.33 (0.02) | ||
| Spectral type | sdB+F8V | sdB+F8V | ||
| Effective temperature | [K] | 38460.0 (2950) | ||
| log(g) | [cgs] | 5.65 (0.3) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.51 (0.05) | 0.74 (0.04) | |
| Distance | [pc] | 1963.09 (198) | 1350.26 (68) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 8.838 (0.08) | 9.024 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.617 (0.05) | -9.244 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.07 (0.05) | |||
| V magnitude | 14.09 (0.04) | |||
| R magnitude | 14.27 (0.06) | |||
| I magnitude | ||||
| J magnitude | 13.85 (0.03) | 13.85 (0.03) | ||
| H magnitude | 13.67 (0.04) | 13.67 (0.04) | ||
| K magnitude | 13.71 (0.04) | 13.71 (0.04) | ||
| u magnitude | 13.92 (0.003) | |||
| g magnitude | 14.22 (0.008) | 14.01 (0.03) | ||
| r magnitude | 14.21 (0.004) | 14.17 (0.04) | ||
| i magnitude | 14.33 (0.004) | 14.35 (0.07) | ||
| z magnitude | 14.46 (0.005) | |||
| G magnitude | 14.08 (0.0005) | 14.06 (0.003) | ||
| BP magnitude | 14.04 (0.004) | |||
| RP magnitude | 14.04 (0.001) | |||
| Pan g magnitude | 14.06 (0.002) | |||
| Pan r magnitude | 14.21 (0.003) | |||
| Pan i magnitude | 14.37 (0.003) | |||
| Pan z magnitude | 14.49 (0.007) | |||
| Pan y magnitude | 14.55 (0.003) | |||
| E(B-V) | 0.068 | |||
* 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.