All names: Gaia DR3 6474852834412549632, GALEX J203420.9-511717, 2MASS J20342110-5117159, Gaia DR2 6474852834412549632, GALEXJ20343-5117, UCAC4 194-191774, WISE J203421.09-511715.8, Gaia EDR3 6474852967556632064, TIC 100475285, EC 20306-5127
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 34 28.49 (0.3) | 20 34 20.95 | 20 34 21.10 (0.03) | ||
| Declination | -51 16 10.54 (0.3) | -51 17 17.16 | -51 17 15.89 (0.03) | ||
| Spectral type | He-sdO | sdOC6.5VIIHe39 | |||
| 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] | 3.21 (0.3) | 0.64 (0.06) | 0.60 (0.04) | |
| Distance | [pc] | 311.68 (34) | 1569.61 (139) | 1670.29 (112) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 8.179 (0.3) | -9.675 (0.08) | -9.601 (0.04) | |
| Proper motion (declination) | [mas/yr] | -37.517 (0.4) | -6.831 (0.08) | -6.764 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.06 (0.01) | ||||
| V magnitude | 14.26 (0.01) | ||||
| R magnitude | 14.38 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 14.96 (0.04) | 14.96 (0.04) | |||
| H magnitude | 15.14 (0.08) | 15.14 (0.08) | |||
| K magnitude | 15.17 (0.1) | 15.17 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.06 (0.02) | ||||
| r magnitude | 14.56 (0.02) | ||||
| i magnitude | 14.97 (0.04) | ||||
| z magnitude | |||||
| G magnitude | 19.63 (0.005) | 14.28 (0.0009) | 14.26 (0.003) | ||
| BP magnitude | 19.72 (0.05) | 14.04 (0.01) | |||
| RP magnitude | 19.69 (0.08) | 14.57 (0.004) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.025 | ||||
* 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.