All names: SDSS J165448.37+155258.5, GALEX J165448.4+155258, TIC 353182485, PG1652+159, Gaia DR2 4557895027682278784, 2MASS J16544836+1552588, PG 1652+159, Gaia DR3 4557895027682278784, LAMOST J165448.38+155258.6
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 54 48.40 | 16 54 48.38 (0.02) | ||
| Declination | 15 52 58.92 | 15 52 58.62 (0.02) | ||
| Spectral type | He-sdOB | sdOC | ||
| Effective temperature | [K] | 43060.0 (360) | ||
| log(g) | [cgs] | 5.59 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.41 (0.05) | 0.51 (0.04) | |
| Distance | [pc] | 2424.24 (321) | 1974.72 (153) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.298 (0.06) | -4.232 (0.03) | |
| Proper motion (declination) | [mas/yr] | -4.141 (0.06) | -4.04 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.25 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.09 (0.09) | 16.09 (0.09) | ||
| H magnitude | 16.17 (0.2) | 16.17 (0.2) | ||
| K magnitude | 15.29 | |||
| u magnitude | 14.99 (0.004) | 15.01 (0.02) | ||
| g magnitude | 15.30 (0.004) | 15.34 (0.02) | ||
| r magnitude | 15.74 (0.005) | 15.76 (0.01) | ||
| i magnitude | 16.06 (0.005) | 16.06 (0.03) | ||
| z magnitude | 16.35 (0.008) | 16.40 (0.02) | ||
| G magnitude | 15.53 (0.0006) | 15.51 (0.003) | ||
| BP magnitude | 15.32 (0.007) | |||
| RP magnitude | 15.73 (0.002) | |||
| Pan g magnitude | 15.38 (0.005) | |||
| Pan r magnitude | 15.73 (0.003) | |||
| Pan i magnitude | 16.07 (0.003) | |||
| Pan z magnitude | 16.31 (0.004) | |||
| Pan y magnitude | 16.51 (0.004) | |||
| E(B-V) | 0.069 | |||
* 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.