All names: SDSS J081258.51+004353.2, TIC 455098821, WISE J081258.50+004353.4, UCAC2 32026170, UCAC4 454-041934, SDSS J081258.50+004353.3, GALEXJ08129+0043, WISEA J081258.50+004353.2, 2MASS J08125851+0043532, Gaia DR3 3089571878131969792, LAMOST J081258.51+004353.2, Gaia DR2 3089571878131969792, GALEX J081258.5+004354
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 12 58.52 | 08 12 58.51 (0.04) | ||
| Declination | 00 43 54.78 | 00 43 53.27 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 28390.0 (340) | ||
| log(g) | [cgs] | 5.42 (0.03) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.83 (0.08) | 0.72 (0.05) | |
| Distance | [pc] | 1199.33 (110) | 1387.54 (90) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -10.56 (0.1) | -10.815 (0.05) | |
| Proper motion (declination) | [mas/yr] | -5.366 (0.08) | -5.264 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.44 (0.04) | |||
| V magnitude | 14.63 (0.08) | |||
| R magnitude | 15.06 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.16 (0.04) | 15.16 (0.04) | ||
| H magnitude | 15.37 (0.09) | 15.37 (0.09) | ||
| K magnitude | 15.38 (0.2) | 15.38 (0.2) | ||
| u magnitude | 14.23 (0.004) | |||
| g magnitude | 14.37 (0.004) | 14.43 (0.03) | ||
| r magnitude | 14.91 (0.009) | 14.86 (0.06) | ||
| i magnitude | 15.16 (0.005) | 15.23 (0.04) | ||
| z magnitude | 15.43 (0.006) | |||
| G magnitude | 14.59 (0.0006) | 14.57 (0.003) | ||
| BP magnitude | 14.39 (0.007) | |||
| RP magnitude | 14.83 (0.002) | |||
| Pan g magnitude | 14.41 (0.005) | |||
| Pan r magnitude | 14.81 (0.001) | |||
| Pan i magnitude | 15.17 (0.002) | |||
| Pan z magnitude | 15.44 (0.003) | |||
| Pan y magnitude | 15.59 (0.005) | |||
| E(B-V) | 0.030 | |||
* 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.