All names: Gaia DR3 2693553005559022848, UCAC4 458-124207, GALEX J214234.8+012744, SDSSJ214234.80+012744.3, 2MASS J21423480+0127446, Gaia EDR3 2693553005559022848, Gaia DR2 2693553005559022848, WISE J214234.83+012743.7, LAMOST J214234.79+012744.3, SDSS J214234.80+012744.3
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 42 34.80 (0.04) | 21 42 34.80 | 21 42 34.80 (0.04) | ||
| Declination | 01 27 44.18 (0.03) | 01 27 44.40 | 01 27 44.71 (0.03) | ||
| Spectral type | sdB | sdB/sdO | |||
| Effective temperature | [K] | 32101.0 (294) | |||
| log(g) | [cgs] | 5.93 (0.06) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.57 (0.05) | 0.55 (0.1) | 0.57 (0.05) | |
| Distance | [pc] | 1760.87 (159) | 1831.84 (407) | 1760.87 (159) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.178 (0.05) | -4.321 (0.1) | -4.178 (0.05) | |
| Proper motion (declination) | [mas/yr] | -33.35 (0.04) | -33.568 (0.1) | -33.35 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.54 (0.1) | ||||
| V magnitude | 15.56 (0.04) | ||||
| R magnitude | 15.95 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.13 (0.09) | 16.13 (0.09) | |||
| H magnitude | 16.29 | ||||
| K magnitude | 16.15 | ||||
| u magnitude | 15.34 (0.004) | 15.34 (0.004) | |||
| g magnitude | 15.50 (0.003) | 15.50 (0.003) | |||
| r magnitude | 15.99 (0.004) | 15.74 (0.03) | |||
| i magnitude | 16.31 (0.004) | 16.31 (0.004) | |||
| z magnitude | 16.60 (0.009) | 16.60 (0.009) | |||
| G magnitude | 15.77 (0.003) | 15.79 (0.002) | 15.77 (0.003) | ||
| BP magnitude | 15.65 (0.003) | 15.61 (0.01) | |||
| RP magnitude | 16.02 (0.005) | 16.02 (0.005) | |||
| Pan g magnitude | 15.62 (0.004) | ||||
| Pan r magnitude | 16.01 (0.002) | ||||
| Pan i magnitude | 16.35 (0.002) | ||||
| Pan z magnitude | 16.61 (0.003) | ||||
| Pan y magnitude | 16.76 (0.002) | ||||
| E(B-V) | 0.055 | ||||
* 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.