All names: TIC 333523715, GALEX J082434.0+302854, UCAC4 603-045172, Gaia DR2 708829002962898304, Gaia DR3 708829002962898304, WISEA J082434.05+302854.6, UCAC2 42405047, WISE J082434.04+302854.8, SDSS J082434.05+302854.7, Ton 317, PG 0821+306, SDSS J082434.05+302854.6, 2MASS J08243405+3028548, PG0821+306, LAMOST J082434.05+302854.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 24 34.05 | 08 24 34.05 (0.03) | ||
| Declination | 30 28 54.60 | 30 28 54.76 (0.02) | ||
| Spectral type | sdO+MS | sdO+F5V | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.33 (0.05) | 0.30 (0.03) | |
| Distance | [pc] | 3056.23 (461) | 3356.83 (376) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.511 (0.09) | -6.63 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.917 (0.07) | -8.827 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.39 (0.05) | |||
| V magnitude | 15.31 (0.08) | |||
| R magnitude | 15.21 (0.08) | |||
| I magnitude | ||||
| J magnitude | 14.76 (0.04) | 14.76 (0.04) | ||
| H magnitude | 14.56 (0.06) | 14.56 (0.06) | ||
| K magnitude | 14.52 (0.06) | 14.52 (0.06) | ||
| u magnitude | 15.33 (0.004) | 15.33 (0.004) | ||
| g magnitude | 15.22 (0.004) | 15.22 (0.004) | ||
| r magnitude | 15.31 (0.004) | 15.31 (0.004) | ||
| i magnitude | 15.35 (0.004) | 15.35 (0.004) | ||
| z magnitude | 15.43 (0.006) | 15.43 (0.006) | ||
| G magnitude | 15.22 (0.0006) | 15.20 (0.003) | ||
| BP magnitude | 15.24 (0.007) | |||
| RP magnitude | 15.04 (0.002) | |||
| Pan g magnitude | 15.27 (0.002) | |||
| Pan r magnitude | 15.31 (0.002) | |||
| Pan i magnitude | 15.38 (0.003) | |||
| Pan z magnitude | 15.46 (0.003) | |||
| Pan y magnitude | 15.48 (0.005) | |||
| E(B-V) | 0.026 | |||
* 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.