All names: 2MASS J08244572+2315204, LAMOST J082445.68+231520.3, WISE J082445.69+231520.3, Gaia DR2 678116344664890368, GALEX J082445.7+231521, TIC 14603383, SDSSJ082445.68+231520.3, UCAC4 567-042712, Gaia EDR3 678116344664890368, SDSS J082445.68+231520.3, Gaia DR3 678116344664890368
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 24 45.69 (0.05) | 08 24 45.69 | 08 24 45.69 (0.05) | ||
| Declination | 23 15 20.34 (0.03) | 23 15 20.30 | 23 15 20.39 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 29900.0 (220) | |||
| log(g) | [cgs] | 5.47 (0.02) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.59 (0.06) | 0.54 (0.08) | 0.59 (0.06) | |
| Distance | [pc] | 1687.19 (157) | 1836.55 (256) | 1687.19 (157) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 4.83 (0.06) | 4.628 (0.1) | 4.83 (0.06) | |
| Proper motion (declination) | [mas/yr] | -3.455 (0.04) | -3.418 (0.07) | -3.455 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.17 (0.1) | ||||
| V magnitude | 15.37 (0.02) | ||||
| R magnitude | 15.90 (0.04) | ||||
| I magnitude | |||||
| J magnitude | 16.02 (0.07) | 16.02 (0.07) | |||
| H magnitude | 16.46 (0.2) | 16.46 (0.2) | |||
| K magnitude | 16.18 (0.3) | 16.18 (0.3) | |||
| u magnitude | 14.87 (0.004) | 14.91 (0.01) | |||
| g magnitude | 15.08 (0.003) | 15.08 (0.01) | |||
| r magnitude | 15.53 (0.003) | 15.54 (0.01) | |||
| i magnitude | 15.88 (0.004) | 15.88 (0.01) | |||
| z magnitude | 16.18 (0.007) | 16.18 (0.02) | |||
| G magnitude | 15.32 (0.003) | 15.34 (0.0008) | 15.32 (0.003) | ||
| BP magnitude | 15.19 (0.003) | 15.13 (0.007) | |||
| RP magnitude | 15.58 (0.005) | 15.57 (0.002) | |||
| Pan g magnitude | 15.14 (0.003) | ||||
| Pan r magnitude | 15.57 (0.003) | ||||
| Pan i magnitude | 15.90 (0.002) | ||||
| Pan z magnitude | 16.17 (0.004) | ||||
| Pan y magnitude | 16.35 (0.005) | ||||
| E(B-V) | 0.034 | ||||
* 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.