All names: UCAC4 286-218715, 2MASS J21054761-3249517, GALEX J210547.6-324951, GALEX J210547.5-324952, GALEXJ21057-3249, Gaia DR2 6780966389233959168, PN G011.7-41.3, Gaia EDR3 6780966389233959168, TIC 92709449, EC 21027-3301, Gaia DR3 6780966389233959168
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 05 47.61 (0.04) | 21 05 47.63 | 21 05 47.61 (0.04) | ||
| Declination | -32 49 52.22 (0.02) | -32 49 51.90 | -32 49 51.85 (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] | 2.31 (0.05) | 2.13 (0.06) | 2.31 (0.05) | |
| Distance | [pc] | 432.51 (9) | 470.37 (14) | 432.51 (9) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.344 (0.04) | -0.286 (0.09) | -0.344 (0.04) | |
| Proper motion (declination) | [mas/yr] | -22.825 (0.04) | -22.756 (0.07) | -22.825 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.30 (0.01) | ||||
| V magnitude | 13.51 (0.01) | ||||
| R magnitude | 13.78 (0.09) | ||||
| I magnitude | |||||
| J magnitude | 14.18 (0.03) | 14.18 (0.03) | |||
| H magnitude | 14.32 (0.04) | 14.32 (0.04) | |||
| K magnitude | 14.38 (0.07) | 14.38 (0.07) | |||
| u magnitude | |||||
| g magnitude | 13.29 (0.01) | ||||
| r magnitude | 13.72 (0.01) | ||||
| i magnitude | 14.11 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 13.44 (0.003) | 13.46 (0.0005) | 13.44 (0.003) | ||
| BP magnitude | 13.29 (0.003) | 13.21 (0.007) | |||
| RP magnitude | 13.74 (0.004) | 13.74 (0.001) | |||
| Pan g magnitude | 13.38 | ||||
| Pan r magnitude | 13.83 | ||||
| Pan i magnitude | 14.11 (0.001) | ||||
| Pan z magnitude | 14.45 | ||||
| Pan y magnitude | 14.69 | ||||
| E(B-V) | 0.071 | ||||
* 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.