All names: SDSS J160113.81+220546.4, Gaia DR2 1206171681670509568, GALEX J160113.9+220547, Gaia DR3 1206171681670509568, TIC 229569654, PG 1559+222, Gaia EDR3 1206171681670509568, PG1559+222, 2MASS J16011381+2205462
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 01 13.81 (0.02) | 16 01 13.81 | 16 01 13.81 (0.02) | ||
| Declination | 22 05 46.51 (0.03) | 22 05 46.51 | 22 05 46.42 (0.03) | ||
| Spectral type | He-sdO | sdBN0.2VIIHe38 | |||
| 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] | 0.85 (0.04) | 0.82 (0.05) | 0.85 (0.04) | |
| Distance | [pc] | 1177.86 (50) | 1218.62 (79) | 1177.86 (50) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.312 (0.03) | -0.362 (0.06) | -0.312 (0.03) | |
| Proper motion (declination) | [mas/yr] | 5.534 (0.03) | 5.361 (0.07) | 5.534 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.52 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.40 (0.05) | 15.40 (0.05) | |||
| H magnitude | 15.48 (0.1) | 15.48 (0.1) | |||
| K magnitude | 15.55 (0.2) | 15.55 (0.2) | |||
| u magnitude | 14.30 (0.004) | 14.31 (0.01) | |||
| g magnitude | 14.57 (0.004) | 14.56 (0.01) | |||
| r magnitude | 15.04 (0.004) | 15.05 (0.01) | |||
| i magnitude | 15.39 (0.004) | 15.39 (0.02) | |||
| z magnitude | 15.73 (0.006) | 15.74 (0.01) | |||
| G magnitude | 14.82 (0.003) | 14.84 (0.0006) | 14.82 (0.003) | ||
| BP magnitude | 14.69 (0.003) | 14.62 (0.01) | |||
| RP magnitude | 15.08 (0.004) | 15.07 (0.002) | |||
| Pan g magnitude | 14.66 (0.004) | ||||
| Pan r magnitude | 15.07 (0.001) | ||||
| Pan i magnitude | 15.43 (0.002) | ||||
| Pan z magnitude | 15.69 (0.003) | ||||
| Pan y magnitude | 15.85 (0.009) | ||||
| E(B-V) | 0.065 | ||||
* 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.