All names: TIC 157141133, UCAC2 28287515, Gaia DR2 6904512841490841472, 2MASS J20244446-1022440, Gaia DR3 6904512841490841472, WISEA J202444.45-102244.3, GALEXJ20247-1022, UCAC4 399-125926, WISE J202444.46-102244.2, Gaia EDR3 6904512841490841472, DENIS J202444.4-102243
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 24 44.46 (0.04) | 20 24 44.51 | 20 24 44.46 (0.04) | ||
| Declination | -10 22 44.34 (0.03) | -10 22 43.02 | -10 22 44.06 (0.03) | ||
| Spectral type | sdB | 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] | 1.42 (0.04) | 1.29 (0.05) | 1.42 (0.04) | |
| Distance | [pc] | 703.98 (21) | 775.49 (32) | 703.98 (21) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.907 (0.05) | -4.971 (0.09) | -4.907 (0.05) | |
| Proper motion (declination) | [mas/yr] | -17.953 (0.04) | -17.969 (0.06) | -17.953 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.47 (0.05) | ||||
| V magnitude | 13.68 (0.02) | ||||
| R magnitude | 14.00 (0.1) | ||||
| I magnitude | 13.91 (0.04) | ||||
| J magnitude | 14.20 (0.03) | 14.20 (0.03) | |||
| H magnitude | 14.30 (0.05) | 14.30 (0.05) | |||
| K magnitude | 14.45 (0.08) | 14.45 (0.08) | |||
| u magnitude | |||||
| g magnitude | 13.47 (0.03) | ||||
| r magnitude | 13.90 (0.01) | ||||
| i magnitude | 14.29 (0.1) | ||||
| z magnitude | |||||
| G magnitude | 13.63 (0.003) | 13.65 (0.0008) | 13.63 (0.003) | ||
| BP magnitude | 13.50 (0.004) | 13.44 (0.009) | |||
| RP magnitude | 13.88 (0.004) | 13.87 (0.003) | |||
| Pan g magnitude | 13.49 (0.002) | ||||
| Pan r magnitude | 13.91 (0.004) | ||||
| Pan i magnitude | 14.23 (0.008) | ||||
| Pan z magnitude | 14.48 (0.0006) | ||||
| Pan y magnitude | 14.64 (0.006) | ||||
| E(B-V) | 0.079 | ||||
* 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.