All names: HZ 20, Balloon 113435001, GALEX J121238.5+424002, FBS B 305, Gaia DR3 1536809808987373824, CBS 457, FBS 1210+429, TIC 445831245, PG 1210+429, UCAC4 664-057198, PLX 2813.01, PG1210+429, SDSS J121238.58+424001.8, 2MASS J12123858+4240018, FB 86, LAMOST J121238.56+424002.2, Gaia DR2 1536809808987373824
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 12 38.59 | 12 12 38.58 (0.02) | ||
| Declination | 42 40 01.99 | 42 40 01.83 (0.02) | ||
| Spectral type | sdB+K | sdB+A0V | ||
| 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] | 0.64 (0.04) | 0.59 (0.02) | |
| Distance | [pc] | 1560.06 (105) | 1702.42 (72) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.21 (0.04) | -1.283 (0.02) | |
| Proper motion (declination) | [mas/yr] | 0.491 (0.04) | 0.635 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.87 (0.02) | |||
| V magnitude | 14.96 (0.05) | |||
| R magnitude | 15.07 (0.07) | |||
| I magnitude | ||||
| J magnitude | 14.48 (0.03) | 14.48 (0.03) | ||
| H magnitude | 14.21 (0.05) | 14.21 (0.05) | ||
| K magnitude | 14.17 (0.06) | 14.17 (0.06) | ||
| u magnitude | 15.05 (0.004) | 15.05 (0.004) | ||
| g magnitude | 14.93 (0.003) | 14.79 (0.05) | ||
| r magnitude | 14.99 (0.004) | 14.96 (0.07) | ||
| i magnitude | 15.03 (0.004) | 14.99 (0.01) | ||
| z magnitude | 15.09 (0.005) | 15.09 (0.005) | ||
| G magnitude | 14.91 (0.0005) | 14.89 (0.003) | ||
| BP magnitude | 14.95 (0.005) | |||
| RP magnitude | 14.72 (0.002) | |||
| Pan g magnitude | 14.97 (0.003) | |||
| Pan r magnitude | 14.99 (0.0009) | |||
| Pan i magnitude | 15.06 (0.002) | |||
| Pan z magnitude | 15.15 (0.003) | |||
| Pan y magnitude | 15.18 (0.004) | |||
| E(B-V) | 0.017 | |||
* 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.