All names: KPD 2055+3111, Gaia DR3 1864830136570923904, Gaia DR2 1864830136570923904, [SPB96] 2088, UCAC4 607-115377, KPD2055+3111, 2MASS J20572691+3122525, Gaia EDR3 1864830136570923904, TIC 236515951, WISE J205726.94+312252.4, WISEA J205726.95+312252.3, UCAC2 42838052
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 57 26.90 (0.02) | 20 57 26.88 | 20 57 26.89 (0.02) | ||
| Declination | 31 22 52.40 (0.02) | 31 22 53.32 | 31 22 52.62 (0.02) | ||
| Spectral type | sdO | sdO | |||
| 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] | 1.21 (0.03) | 1.26 (0.04) | 1.21 (0.03) | |
| Distance | [pc] | 825.01 (20) | 793.02 (26) | 825.01 (20) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 7.164 (0.02) | 7.173 (0.06) | 7.164 (0.02) | |
| Proper motion (declination) | [mas/yr] | -13.455 (0.03) | -13.636 (0.07) | -13.455 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.88 | ||||
| V magnitude | 14.12 | ||||
| R magnitude | 14.16 (0.4) | ||||
| I magnitude | |||||
| J magnitude | 14.68 (0.04) | 14.68 (0.04) | |||
| H magnitude | 14.74 (0.07) | 14.74 (0.07) | |||
| K magnitude | 14.97 (0.1) | 14.97 (0.1) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.13 (0.003) | 14.15 (0.0005) | 14.13 (0.003) | ||
| BP magnitude | 13.99 (0.003) | 13.95 (0.005) | |||
| RP magnitude | 14.38 (0.004) | 14.38 (0.002) | |||
| Pan g magnitude | 14.02 (0.0007) | ||||
| Pan r magnitude | 14.41 (0.002) | ||||
| Pan i magnitude | 14.74 (0.001) | ||||
| Pan z magnitude | 15.01 (0.003) | ||||
| Pan y magnitude | 15.17 (0.005) | ||||
| E(B-V) | 0.079 | ||||
* 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.