All names: Gaia DR2 944892878136403712, FBS B 38, FBS0639+391, FBS 0639+391, Gaia DR3 944892878136403712, 2MASS J06424228+3908236, TIC 368827573, LAMOST J064242.28+390823.7
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 06 42 42.29 | 06 42 42.29 (0.03) | ||
| Declination | 39 08 24.40 | 39 08 23.76 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 29133.0 (455) | ||
| log(g) | [cgs] | 5.57 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.81 (0.05) | 0.80 (0.04) | |
| Distance | [pc] | 1242.08 (83) | 1252.35 (56) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.138 (0.09) | 2.583 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.64 (0.09) | -3.876 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.97 (0.04) | 14.97 (0.04) | ||
| H magnitude | 15.18 (0.09) | 15.18 (0.09) | ||
| K magnitude | 15.51 (0.2) | 15.51 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.71 (0.0009) | 14.69 (0.003) | ||
| BP magnitude | 14.57 (0.01) | |||
| RP magnitude | 14.83 (0.003) | |||
| Pan g magnitude | 14.57 (0.004) | |||
| Pan r magnitude | 14.89 (0.002) | |||
| Pan i magnitude | 15.17 (0.001) | |||
| Pan z magnitude | 15.40 (0.004) | |||
| Pan y magnitude | 15.54 (0.007) | |||
| E(B-V) | 0.112 | |||
* 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.