All names: UCAC4 557-045952, Gaia DR2 685761455170072192, LAMOST J085217.71+211637.5, GALEX J085217.7+211637, LAMOST J085217.72+211636.7, SDSS J085217.70+211637.4, SDSSJ085217.70+211637.5, Gaia DR3 685761455170072192, LAMOST J085217.60+211636.9
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 52 17.70 | 08 52 17.70 (0.05) | ||
| Declination | 21 16 37.50 | 21 16 37.54 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 30536.0 (1039) | ||
| log(g) | [cgs] | 5.43 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.16 (0.07) | 0.21 (0.05) | |
| Distance | [pc] | 6105.01 (2620) | 4830.92 (1272) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.611 (0.1) | 4.455 (0.06) | |
| Proper motion (declination) | [mas/yr] | -0.885 (0.1) | -0.827 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 15.84 (0.005) | 15.84 (0.005) | ||
| g magnitude | 16.04 (0.003) | 16.04 (0.003) | ||
| r magnitude | 16.51 (0.004) | 16.51 (0.004) | ||
| i magnitude | 16.89 (0.005) | 16.89 (0.005) | ||
| z magnitude | 17.21 (0.01) | 17.21 (0.01) | ||
| G magnitude | 16.33 (0.001) | 16.30 (0.003) | ||
| BP magnitude | 16.10 (0.006) | |||
| RP magnitude | 16.55 (0.008) | |||
| Pan g magnitude | 16.12 (0.005) | |||
| Pan r magnitude | 16.54 (0.003) | |||
| Pan i magnitude | 16.90 (0.002) | |||
| Pan z magnitude | 17.18 (0.003) | |||
| Pan y magnitude | 17.32 (0.01) | |||
| E(B-V) | 0.028 | |||
* 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.