All names: Gaia DR2 2554377961881706240, [TFW97] J004206.11+050923.37, TIC 328083434, uvby98 601106107, GSC 00017-00283, EPIC 220422705, PB 6107, PG 0039+049, GALEX J004206.2+050922, PG0039+049, UCAC2 33505322, Gaia DR3 2554377961881706240, uvby98 680003929, 2MASS J00420611+0509233
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 42 06.10 | 00 42 06.12 (0.08) | ||
| Declination | 05 09 23.40 | 05 09 23.39 (0.05) | ||
| Spectral type | sdB | sdB+G2V | ||
| 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] | 0.76 (0.07) | 1.09 (0.09) | |
| Distance | [pc] | 1308.56 (116) | 916.59 (75) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 11.077 (0.1) | 12.339 (0.1) | |
| Proper motion (declination) | [mas/yr] | -14.327 (0.1) | -15.45 (0.09) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.86 (0.002) | |||
| V magnitude | 12.88 (0.002) | |||
| R magnitude | 12.81 (0.003) | |||
| I magnitude | 12.71 (0.004) | |||
| J magnitude | 12.53 (0.03) | 12.53 (0.03) | ||
| H magnitude | 12.34 (0.03) | 12.34 (0.03) | ||
| K magnitude | 12.29 (0.03) | 12.29 (0.03) | ||
| u magnitude | 13.80 (0.005) | |||
| g magnitude | 12.96 (0.002) | |||
| r magnitude | 13.11 (0.002) | |||
| i magnitude | 13.21 (0.002) | |||
| z magnitude | 13.50 (0.006) | |||
| G magnitude | 12.80 (0.0003) | 12.78 (0.003) | ||
| BP magnitude | 12.77 (0.004) | |||
| RP magnitude | 12.72 (0.001) | |||
| Pan g magnitude | 12.76 (0.001) | |||
| Pan r magnitude | 13.70 (0.001) | |||
| Pan i magnitude | 13.13 (0.001) | |||
| Pan z magnitude | 13.55 (0.2) | |||
| Pan y magnitude | 13.22 (0) | |||
| E(B-V) | 0.028 | |||
* 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.