All names: GALEX J124035.4+232508, Gaia DR3 3956229135239721856, Gaia DR2 3956229135239721856, SDSS J124035.43+232508.8, Gaia EDR3 3956229135239721856, SDSSJ124035.43+232508.8
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 40 35.43 (0.2) | 12 40 35.43 | 12 40 35.43 (0.2) | ||
| Declination | 23 25 08.70 (0.1) | 23 25 08.87 | 23 25 08.84 (0.1) | ||
| Spectral type | sdB+MS | sdB+? | |||
| 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] | 0.33 (0.2) | 0.45 (0.2) | 0.33 (0.2) | |
| Distance | [pc] | 3020.24 (1723) | 2203.13 (1086) | 3020.24 (1723) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.965 (0.2) | 1.534 (0.4) | 1.965 (0.2) | |
| Proper motion (declination) | [mas/yr] | -8.47 (0.2) | -8.475 (0.2) | -8.47 (0.2) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 18.65 (0.02) | 18.65 (0.02) | |||
| g magnitude | 18.61 (0.008) | 18.61 (0.008) | |||
| r magnitude | 18.89 (0.01) | 18.89 (0.01) | |||
| i magnitude | 19.04 (0.01) | 19.04 (0.01) | |||
| z magnitude | 19.10 (0.05) | 19.10 (0.05) | |||
| G magnitude | 18.73 (0.003) | 18.76 (0.002) | 18.73 (0.003) | ||
| BP magnitude | 18.75 (0.03) | 18.71 (0.02) | |||
| RP magnitude | 18.68 (0.03) | 18.63 (0.02) | |||
| Pan g magnitude | 18.67 (0.01) | ||||
| Pan r magnitude | 18.90 (0.007) | ||||
| Pan i magnitude | 19.03 (0.006) | ||||
| Pan z magnitude | 19.14 (0.01) | ||||
| Pan y magnitude | 19.18 (0.02) | ||||
| E(B-V) | 0.018 | ||||
* 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.