All names: Gaia DR3 1306852479661771648, Gaia DR2 1306852479661771648, SDSS J165924.74+273244.4, GALEX J165924.8+273244, SDSS J165924.75+273244.3, SDSSJ165924.75+273244.4
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 16 59 24.75 | 16 59 24.75 (0.2) | |
| Declination | 27 32 44.40 | 27 32 44.41 (0.2) | |
| Spectral type | sdO | sdOHe | |
| Effective temperature | [K] | 55643.0 (6000) | |
| log(g) | [cgs] | 5.31 (0.2) | |
| Mass | [M☉] | ||
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | -0.73 (0.4) | |
| Distance | [pc] | ||
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -2.214 (0.7) | -3.028 (0.3) |
| Proper motion (declination) | [mas/yr] | -5.226 (0.7) | -5.423 (0.3) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | |||
| V magnitude | |||
| R magnitude | |||
| I magnitude | |||
| J magnitude | |||
| H magnitude | |||
| K magnitude | |||
| u magnitude | 19.15 (0.02) | 19.15 (0.02) | |
| g magnitude | 19.44 (0.01) | 19.44 (0.01) | |
| r magnitude | 19.95 (0.02) | 19.95 (0.02) | |
| i magnitude | 20.33 (0.04) | 20.33 (0.04) | |
| z magnitude | 20.47 (0.1) | 20.47 (0.1) | |
| G magnitude | 19.81 (0.004) | 19.74 (0.004) | |
| BP magnitude | 19.53 (0.04) | ||
| RP magnitude | 20.06 (0.08) | ||
| Pan g magnitude | 19.58 (0.006) | ||
| Pan r magnitude | 19.97 (0.02) | ||
| Pan i magnitude | 20.31 (0.02) | ||
| Pan z magnitude | 20.52 (0.03) | ||
| Pan y magnitude | |||
| 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.