All names: Gaia DR3 417343419561896960, TIC 445375952, KPD 0054+5406, KPD0054+5406, UCAC4 722-008961, Gaia DR2 417343419561896960, Lan 267, 2MASS J00573899+5422546
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 57 38.97 | 00 57 39.00 (0.02) | ||
| Declination | 54 22 54.72 | 54 22 54.69 (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] | 0.79 (0.06) | 0.84 (0.03) | |
| Distance | [pc] | 1271.46 (100) | 1187.51 (35) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.963 (0.07) | 6.91 (0.02) | |
| Proper motion (declination) | [mas/yr] | 0.851 (0.06) | 0.818 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.05 | |||
| V magnitude | 14.12 | |||
| R magnitude | 14.15 (0.06) | |||
| I magnitude | ||||
| J magnitude | 14.30 (0.03) | 14.30 (0.03) | ||
| H magnitude | 14.24 (0.04) | 14.24 (0.04) | ||
| K magnitude | 14.39 (0.07) | 14.39 (0.07) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.09 (0.0004) | 14.07 (0.003) | ||
| BP magnitude | 13.99 (0.005) | |||
| RP magnitude | 14.12 (0.001) | |||
| Pan g magnitude | 14.02 (0) | |||
| Pan r magnitude | 14.22 (0.002) | |||
| Pan i magnitude | 14.47 (0.002) | |||
| Pan z magnitude | 14.66 (0.0008) | |||
| Pan y magnitude | 14.79 (0.002) | |||
| E(B-V) | 0.209 | |||
* 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.