All names: LAMOST J042106.56+254655.4, TIC 58371138, SDSSJ042106.56+254655.5, 2MASS J04210658+2546557, Gaia DR2 150480505705334784, Gaia DR3 150480505705334784, SDSS J042106.56+254655.5, SDSS J042106.57+254655.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 21 06.57 | 04 21 06.57 (0.03) | ||
| Declination | 25 46 55.60 | 25 46 55.58 (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] | 1.08 (0.06) | 1.10 (0.04) | |
| Distance | [pc] | 924.56 (51) | 911.33 (29) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -9.846 (0.1) | -9.981 (0.05) | |
| Proper motion (declination) | [mas/yr] | -15.405 (0.08) | -15.579 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.18 (0.04) | 15.18 (0.04) | ||
| H magnitude | 15.11 (0.07) | 15.11 (0.07) | ||
| K magnitude | 15.17 (0.1) | 15.17 (0.1) | ||
| u magnitude | 15.76 (0.005) | 15.76 (0.005) | ||
| g magnitude | 15.43 (0.004) | 15.43 (0.004) | ||
| r magnitude | 15.45 (0.004) | 15.45 (0.004) | ||
| i magnitude | 15.53 (0.005) | 15.53 (0.005) | ||
| z magnitude | 15.65 (0.006) | 15.65 (0.006) | ||
| G magnitude | 15.41 (0.0005) | 15.39 (0.003) | ||
| BP magnitude | 15.46 (0.004) | |||
| RP magnitude | 15.22 (0.002) | |||
| Pan g magnitude | 15.46 (0.002) | |||
| Pan r magnitude | 15.47 (0.003) | |||
| Pan i magnitude | 15.54 (0.003) | |||
| Pan z magnitude | 15.65 (0.003) | |||
| Pan y magnitude | 15.73 (0.004) | |||
| E(B-V) | 0.347 | |||
* 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.