All names: BPS CS 30314-0005, UCAC4 273-204730, EC20561-3543, 2MASS J20591587-3531290, Gaia DR3 6778673838770454784, EC 20561-3543, Gaia EDR3 6778673838770454784, Gaia DR2 6778673838770454784
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 59 15.87 (0.04) | 20 59 15.88 | 20 59 15.86 (0.04) | ||
| Declination | -35 31 29.31 (0.02) | -35 31 29.32 | -35 31 29.11 (0.02) | ||
| 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 (0.05) | 0.82 (0.07) | 0.74 (0.05) | |
| Distance | [pc] | 1350.07 (87) | 1223.69 (105) | 1350.07 (87) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 2.249 (0.04) | 2.208 (0.09) | 2.249 (0.04) | |
| Proper motion (declination) | [mas/yr] | -12.007 (0.04) | -12.023 (0.07) | -12.007 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.42 (0.01) | ||||
| V magnitude | 14.65 (0.01) | ||||
| R magnitude | 14.97 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.29 (0.04) | 15.29 (0.04) | |||
| H magnitude | 15.51 (0.1) | 15.51 (0.1) | |||
| K magnitude | 15.35 (0.2) | 15.35 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.41 (0.01) | ||||
| r magnitude | 14.90 (0.02) | ||||
| i magnitude | 15.12 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.60 (0.003) | 14.62 (0.0005) | 14.60 (0.003) | ||
| BP magnitude | 14.45 (0.003) | 14.38 (0.005) | |||
| RP magnitude | 14.88 (0.004) | 14.88 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.044 | ||||
* 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.