All names: KPD 2025+5428, Gaia DR2 2185066123669404800, TIC 467226281, UCAC4 724-069015, 2MASS J20271749+5439039, Gaia DR3 2185066123669404800, KPD2025+5428
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 27 17.53 | 20 27 17.53 (0.03) | ||
| Declination | 54 39 03.63 | 54 39 04.02 (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] | 0.70 (0.04) | 0.76 (0.03) | |
| Distance | [pc] | 1429.80 (77) | 1320.83 (47) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.751 (0.07) | 2.886 (0.03) | |
| Proper motion (declination) | [mas/yr] | 8.413 (0.08) | 8.33 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.79 (0.07) | |||
| V magnitude | 15.43 (0.08) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.95 (0.09) | 15.95 (0.09) | ||
| H magnitude | 15.42 | |||
| K magnitude | 15.49 | |||
| u magnitude | ||||
| g magnitude | 15.68 (0.01) | |||
| r magnitude | 15.47 (0.01) | |||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.65 (0.0006) | 15.63 (0.003) | ||
| BP magnitude | 15.55 (0.006) | |||
| RP magnitude | 15.71 (0.005) | |||
| Pan g magnitude | 15.56 (0.004) | |||
| Pan r magnitude | 15.80 (0.003) | |||
| Pan i magnitude | 16.05 (0.002) | |||
| Pan z magnitude | 16.25 (0.003) | |||
| Pan y magnitude | 16.38 (0.007) | |||
| E(B-V) | 0.179 | |||
* 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.