All names: TIC 225709484, 2MASS J18521800-2147506, EPIC 216747137, Gaia DR2 4078817195637328256, GALAH 170601004601184, WISEA J185218.00-214751.2, UCAC4 342-169142, Gaia DR3 4078817195637328256, DENIS J185218.0-214750, UCAC2 23234937, WISE J185218.00-214751.1, GALEXJ18522-2147
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 52 17.83 | 18 52 18.00 (0.02) | ||
| Declination | -21 47 51.42 | -21 47 50.65 (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] | 1.11 (0.06) | 1.12 (0.03) | |
| Distance | [pc] | 903.83 (46) | 892.70 (24) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.858 (0.09) | 6.969 (0.03) | |
| Proper motion (declination) | [mas/yr] | -7.44 (0.07) | -7.348 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.73 (0.01) | |||
| V magnitude | 13.83 (0.04) | |||
| R magnitude | 14.10 (0.1) | |||
| I magnitude | 13.85 (0.04) | |||
| J magnitude | 14.36 (0.03) | 14.36 (0.03) | ||
| H magnitude | 14.41 (0.06) | 14.41 (0.06) | ||
| K magnitude | 14.72 (0.1) | 14.72 (0.1) | ||
| u magnitude | ||||
| g magnitude | 13.71 (0.03) | |||
| r magnitude | 13.95 (0.06) | |||
| i magnitude | 14.20 (0.03) | |||
| z magnitude | ||||
| G magnitude | 13.77 (0.004) | 13.75 (0.004) | ||
| BP magnitude | 13.64 (0.02) | |||
| RP magnitude | 13.85 (0.03) | |||
| Pan g magnitude | 13.69 (0.003) | |||
| Pan r magnitude | 13.91 (0.006) | |||
| Pan i magnitude | 14.21 (0.004) | |||
| Pan z magnitude | 14.42 (0.006) | |||
| Pan y magnitude | 14.53 (0.01) | |||
| E(B-V) | 0.235 | |||
* 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.