All names: Gaia EDR3 6774813350366290816, UCAC4 260-196131, GALEX J205715.2-381150, BPS CS 22879-0149, Gaia DR2 6774813350366290816, EC 20540-3823, BPSCS22879-149, TIC 471013459, TIC 1991865590, Gaia DR3 6774813350366290816, TIC 471013511
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 57 15.29 (0.03) | 20 57 15.23 | 20 57 15.27 (0.03) | ||
| Declination | -38 11 51.67 (0.02) | -38 11 51.16 | -38 11 51.42 (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] | 1.04 (0.04) | 1.08 (0.07) | 1.04 (0.04) | |
| Distance | [pc] | 959.51 (36) | 928.42 (59) | 959.51 (36) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 14.432 (0.04) | 14.445 (0.1) | 14.432 (0.04) | |
| Proper motion (declination) | [mas/yr] | -15.531 (0.03) | -15.549 (0.07) | -15.531 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.11 (0.06) | ||||
| V magnitude | 14.24 (0.02) | ||||
| R magnitude | 14.61 (0.1) | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | |||||
| g magnitude | 14.06 (0.04) | ||||
| r magnitude | 14.46 (0.03) | ||||
| i magnitude | 14.78 (0.1) | ||||
| z magnitude | |||||
| G magnitude | 14.24 (0.003) | 14.25 (0.0006) | 14.24 (0.003) | ||
| BP magnitude | 14.11 (0.003) | 14.07 (0.003) | |||
| RP magnitude | 14.48 (0.004) | 14.48 (0.001) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.032 | ||||
* 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.