All names: TIC 139595280, Gaia DR3 4899152684971095808, 2MASS J04204425-2205204, UCAC4 340-005170, GALEX J042044.0-220519, Gaia EDR3 4899152684971095808, EC 04185-2212, Gaia DR2 4899152684971095808, GALEXJ04207-2205
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 04 20 44.27 (0.02) | 04 20 44.10 | 04 20 44.24 (0.02) | ||
| Declination | -22 05 20.72 (0.02) | -22 05 19.46 | -22 05 20.44 (0.02) | ||
| 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] | 1.31 (0.04) | 1.25 (0.05) | 1.31 (0.04) | |
| Distance | [pc] | 761.79 (22) | 799.55 (34) | 761.79 (22) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 17.81 (0.03) | 17.923 (0.07) | 17.81 (0.03) | |
| Proper motion (declination) | [mas/yr] | -17.814 (0.04) | -17.644 (0.08) | -17.814 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.88 (0.01) | ||||
| V magnitude | 14.11 (0.03) | ||||
| R magnitude | 14.45 (0.09) | ||||
| I magnitude | |||||
| J magnitude | 14.80 (0.03) | 14.80 (0.03) | |||
| H magnitude | 15.02 (0.08) | 15.02 (0.08) | |||
| K magnitude | 15.16 (0.1) | 15.16 (0.1) | |||
| u magnitude | |||||
| g magnitude | 13.88 (0.01) | ||||
| r magnitude | 14.35 (0.04) | ||||
| i magnitude | 14.69 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.13 (0.003) | 14.14 (0.0005) | 14.13 (0.003) | ||
| BP magnitude | 13.97 (0.003) | 13.87 (0.009) | |||
| RP magnitude | 14.43 (0.004) | 14.43 (0.002) | |||
| Pan g magnitude | 13.98 (0.005) | ||||
| Pan r magnitude | 14.41 (0.005) | ||||
| Pan i magnitude | 14.78 (0.004) | ||||
| Pan z magnitude | 15.05 (0.002) | ||||
| Pan y magnitude | 15.23 (0.006) | ||||
| E(B-V) | 0.022 | ||||
* 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.