All names: LAMOST J064331.91+140925.9, UCAC4 521-030413, 2MASS J06433191+1409261, Gaia DR2 3355897092143865088, UCAC2 36795986, KPD 0640+1412, Gaia DR3 3355897092143865088, TIC 59769766, KPD0640+1412
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 06 43 31.89 | 06 43 31.91 (0.02) | ||
| Declination | 14 09 26.80 | 14 09 26.06 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 35930.0 (180) | ||
| log(g) | [cgs] | 5.57 (0.02) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.01 (0.05) | 1.07 (0.03) | |
| Distance | [pc] | 993.84 (50) | 932.05 (27) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 3.632 (0.07) | 3.753 (0.03) | |
| Proper motion (declination) | [mas/yr] | -15.432 (0.06) | -15.458 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.02 (0.09) | |||
| V magnitude | 14.82 (0.02) | |||
| R magnitude | 15.05 (0.09) | |||
| I magnitude | ||||
| J magnitude | 14.90 (0.04) | 14.90 (0.04) | ||
| H magnitude | 14.86 (0.07) | 14.86 (0.07) | ||
| K magnitude | 15.00 (0.1) | 15.00 (0.1) | ||
| u magnitude | ||||
| g magnitude | 14.76 (0.03) | |||
| r magnitude | 14.90 (0.01) | |||
| i magnitude | 15.04 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.83 (0.0006) | 14.81 (0.003) | ||
| BP magnitude | 14.77 (0.007) | |||
| RP magnitude | 14.79 (0.002) | |||
| Pan g magnitude | 14.80 (0.001) | |||
| Pan r magnitude | 14.94 (0.004) | |||
| Pan i magnitude | 15.13 (0.003) | |||
| Pan z magnitude | 15.29 (0.002) | |||
| Pan y magnitude | 15.41 (0.005) | |||
| E(B-V) | 0.193 | |||
* 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.