All names: Gaia DR3 254631847728048384, Gaia DR2 254631847728048384, LAMOST J045557.69+461907.9, TIC 446089354, LAMOSTJ045557.69+461907.9, 2MASS J04555768+4619078, UCAC4 682-031668
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 55 57.69 | 04 55 57.69 (0.03) | ||
| Declination | 46 19 07.91 | 46 19 07.90 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 27250.0 (430) | ||
| log(g) | [cgs] | 5.45 (0.04) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.94 (0.05) | 0.89 (0.04) | |
| Distance | [pc] | 1060.90 (55) | 1119.70 (45) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.719 (0.08) | 4.507 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.547 (0.07) | -0.692 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.74 (0.01) | |||
| V magnitude | 15.23 (0.1) | |||
| R magnitude | 15.68 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.53 (0.05) | 15.53 (0.05) | ||
| H magnitude | 15.38 (0.09) | 15.38 (0.09) | ||
| K magnitude | 15.34 (0.1) | 15.34 (0.1) | ||
| u magnitude | ||||
| g magnitude | 15.45 (0.05) | |||
| r magnitude | 14.85 (0.09) | |||
| i magnitude | 14.42 (0.09) | |||
| z magnitude | ||||
| G magnitude | 15.72 (0.0008) | 15.69 (0.003) | ||
| BP magnitude | 15.75 (0.005) | |||
| RP magnitude | 15.54 (0.003) | |||
| Pan g magnitude | 15.78 (0.005) | |||
| Pan r magnitude | 15.80 (0.004) | |||
| Pan i magnitude | 15.89 (0.002) | |||
| Pan z magnitude | 15.99 (0.003) | |||
| Pan y magnitude | 16.05 (0.003) | |||
| E(B-V) | 0.287 | |||
* 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.