All names: UCAC4 700-112828, KPD2230+4937, Gaia DR3 1988122807799740672, Gaia DR2 1988122807799740672, Gaia EDR3 1988122807799740672, TIC 315261231, 2MASS J22322649+4953221, KPD 2230+4937
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 32 26.49 (0.03) | 22 32 26.55 | 22 32 26.50 (0.03) | ||
| Declination | 49 53 22.14 (0.03) | 49 53 23.04 | 49 53 22.18 (0.03) | ||
| Spectral type | sdB | sdB | |||
| 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] | 0.74 (0.04) | 0.83 (0.06) | 0.74 (0.04) | |
| Distance | [pc] | 1358.51 (66) | 1206.56 (82) | 1358.51 (66) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.5 (0.04) | -4.551 (0.09) | -4.5 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.663 (0.03) | -2.59 (0.08) | -2.663 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.56 (0.09) | ||||
| V magnitude | 15.78 (0.01) | ||||
| R magnitude | 16.10 | ||||
| I magnitude | |||||
| J magnitude | 16.21 (0.1) | 16.21 (0.1) | |||
| H magnitude | 16.01 | ||||
| K magnitude | 16.87 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.79 (0.003) | 15.81 (0.0009) | 15.79 (0.003) | ||
| BP magnitude | 15.70 (0.003) | 15.65 (0.005) | |||
| RP magnitude | 15.96 (0.005) | 15.95 (0.005) | |||
| Pan g magnitude | 15.67 (0.003) | ||||
| Pan r magnitude | 16.00 (0.002) | ||||
| Pan i magnitude | 16.30 (0.003) | ||||
| Pan z magnitude | 16.54 (0.003) | ||||
| Pan y magnitude | 16.68 (0.008) | ||||
| E(B-V) | 0.147 | ||||
* 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.