All names: GALEX J073115.8+032842, 2MASS J07311588+0328428, LAMOST J073115.89+032842.8, Gaia DR3 3136412997623472512, Gaia DR2 3136412997623472512, UCAC4 468-032524, LAMOSTJ073115.89+032842.8
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 31 15.89 | 07 31 15.88 (0.09) | ||
| Declination | 03 28 42.89 | 03 28 42.90 (0.08) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 23956.0 (683) | ||
| log(g) | [cgs] | 5.19 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.16 (0.1) | 0.40 (0.1) | |
| Distance | [pc] | 6242.20 (5186) | 2514.46 (637) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.415 (0.2) | -0.671 (0.1) | |
| Proper motion (declination) | [mas/yr] | -0.432 (0.2) | 0.188 (0.09) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.62 (0.06) | |||
| V magnitude | 16.37 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.60 (0.1) | 16.60 (0.1) | ||
| H magnitude | 15.78 | |||
| K magnitude | 15.54 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.57 (0.002) | 16.56 (0.003) | ||
| BP magnitude | 16.41 (0.009) | |||
| RP magnitude | 16.65 (0.006) | |||
| Pan g magnitude | 16.42 (0.003) | |||
| Pan r magnitude | 16.72 (0.002) | |||
| Pan i magnitude | 16.98 (0.006) | |||
| Pan z magnitude | 17.17 (0.003) | |||
| Pan y magnitude | 17.29 (0.02) | |||
| E(B-V) | 0.060 | |||
* 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.