All names: Gaia DR2 6881235733656817536, SDSSJ201240.58-110042.0, 2MASS J20124058-1100418, SDSS J201240.58-110042.0, GALEX J201240.5-110041, Gaia DR3 6881235733656817536, TIC 179285046
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 20 12 40.58 | 20 12 40.59 (0.05) | |
| Declination | -11 00 42.00 | -11 00 41.91 (0.04) | |
| Spectral type | sdO | sdO | |
| Effective temperature | [K] | 64008.0 (6000) | |
| log(g) | [cgs] | 5.28 (0.2) | |
| Mass | [M☉] | ||
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | -0.05 (0.08) | 0.09 (0.06) |
| Distance | [pc] | 10799.14 (6846) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -1.02 (0.1) | -0.677 (0.06) |
| Proper motion (declination) | [mas/yr] | -13.839 (0.09) | -13.875 (0.04) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | 16.45 (0.1) | 16.45 (0.1) | |
| H magnitude | 16.91 | ||
| K magnitude | 15.59 | ||
| u magnitude | 15.61 (0.005) | 15.61 (0.005) | |
| g magnitude | 15.89 (0.004) | 15.89 (0.004) | |
| r magnitude | 16.32 (0.005) | 16.32 (0.005) | |
| i magnitude | 16.63 (0.005) | 16.63 (0.005) | |
| z magnitude | 16.89 (0.01) | 16.89 (0.01) | |
| G magnitude | 16.13 (0.002) | 16.10 (0.003) | |
| BP magnitude | 15.91 (0.007) | ||
| RP magnitude | 16.32 (0.007) | ||
| Pan g magnitude | 15.94 (0.001) | ||
| Pan r magnitude | 16.33 (0.003) | ||
| Pan i magnitude | 16.66 (0.002) | ||
| Pan z magnitude | 16.91 (0.003) | ||
| Pan y magnitude | 17.08 (0.01) | ||
| E(B-V) | |||
* 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.