All names: GALEX J040422.8+260755, LAMOST J040422.89+260754.5, Gaia DR2 162522700650966400, UCAC4 581-010133, WISE J040422.97+260754.9, 2MASS J04042289+2607546, LAMOSTJ040422.89+260754.5, Gaia DR3 162522700650966400
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 04 22.90 | 04 04 22.90 (0.04) | ||
| Declination | 26 07 54.58 | 26 07 54.63 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 30350.0 (180) | ||
| log(g) | [cgs] | 5.75 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.73 (0.09) | 0.60 (0.04) | |
| Distance | [pc] | 1376.46 (169) | 1658.93 (121) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.778 (0.1) | -0.491 (0.06) | |
| Proper motion (declination) | [mas/yr] | -4.99 (0.07) | -4.977 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.65 (0.07) | |||
| V magnitude | 15.81 (0.02) | |||
| R magnitude | 15.75 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.89 (0.08) | 15.89 (0.08) | ||
| H magnitude | 15.81 (0.2) | 15.81 (0.2) | ||
| K magnitude | 15.74 (0.2) | 15.74 (0.2) | ||
| u magnitude | ||||
| g magnitude | 15.59 (0.01) | |||
| r magnitude | 16.00 (0.06) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.72 (0.0006) | 15.70 (0.003) | ||
| BP magnitude | 15.57 (0.006) | |||
| RP magnitude | 15.84 (0.003) | |||
| Pan g magnitude | 15.59 (0.003) | |||
| Pan r magnitude | 15.89 (0.003) | |||
| Pan i magnitude | 16.19 (0.002) | |||
| Pan z magnitude | 16.40 (0.005) | |||
| Pan y magnitude | 16.56 (0.006) | |||
| E(B-V) | 0.224 | |||
* 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.