All names: 2MASS J20233260+0136210, Gaia EDR3 4230984141696772864, Gaia DR2 4230984141696772864, TIC 419079597, GALEXJ20235+0136, GALEX J202332.7+013618, Gaia DR3 4230984141696772864, TYC 497-63-1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 23 32.60 (0.03) | 20 23 32.74 | 20 23 32.61 (0.03) | ||
| Declination | 01 36 20.52 (0.02) | 01 36 18.47 | 01 36 21.08 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 29450.0 (460) | |||
| log(g) | [cgs] | 5.60 (0.06) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.31 (0.04) | 2.50 (0.09) | 2.31 (0.04) | |
| Distance | [pc] | 433.11 (8) | 399.60 (14) | 433.11 (8) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.859 (0.04) | -2.879 (0.1) | -2.859 (0.04) | |
| Proper motion (declination) | [mas/yr] | -35.122 (0.03) | -35.109 (0.09) | -35.122 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.71 (0.2) | ||||
| V magnitude | 12.38 (0.2) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.37 (0.03) | 13.37 (0.03) | |||
| H magnitude | 13.46 (0.04) | 13.46 (0.04) | |||
| K magnitude | 13.54 (0.04) | 13.54 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 12.87 (0.003) | 12.89 (0.0008) | 12.87 (0.003) | ||
| BP magnitude | 12.76 (0.003) | 12.71 (0.006) | |||
| RP magnitude | 13.08 (0.004) | 13.08 (0.003) | |||
| Pan g magnitude | 12.58 | ||||
| Pan r magnitude | 13.03 | ||||
| Pan i magnitude | 13.37 | ||||
| Pan z magnitude | 13.68 (0.001) | ||||
| Pan y magnitude | 13.84 (0.005) | ||||
| E(B-V) | 0.061 | ||||
* 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.