All names: GALEX J163045.4+180121, PG1628+181, Gaia DR3 4467130720760209152, 2MASS J16304544+1801202, Gaia DR2 4467130720760209152, PG 1628+181, TIC 356085716, SDSS J163045.45+180120.4
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 30 45.46 | 16 30 45.46 (0.03) | ||
| Declination | 18 01 20.61 | 18 01 20.39 (0.02) | ||
| Spectral type | sdB | sdB | ||
| 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] | 0.70 (0.05) | 0.63 (0.03) | |
| Distance | [pc] | 1435.13 (98) | 1591.09 (87) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.714 (0.06) | -6.627 (0.03) | |
| Proper motion (declination) | [mas/yr] | -2.919 (0.06) | -2.77 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.25 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.86 (0.08) | 15.86 (0.08) | ||
| H magnitude | 16.14 (0.2) | 16.14 (0.2) | ||
| K magnitude | 15.74 (0.2) | 15.74 (0.2) | ||
| u magnitude | 15.12 (0.004) | 15.15 (0.02) | ||
| g magnitude | 15.14 (0.004) | 15.19 (0.01) | ||
| r magnitude | 15.57 (0.005) | 15.60 (0.01) | ||
| i magnitude | 15.86 (0.005) | 15.90 (0.01) | ||
| z magnitude | 16.13 (0.007) | 16.17 (0.01) | ||
| G magnitude | 15.39 (0.002) | 15.37 (0.003) | ||
| BP magnitude | 15.22 (0.006) | |||
| RP magnitude | 15.54 (0.007) | |||
| Pan g magnitude | 15.26 (0.02) | |||
| Pan r magnitude | 15.55 (0.006) | |||
| Pan i magnitude | 15.88 (0.006) | |||
| Pan z magnitude | 16.09 (0.003) | |||
| Pan y magnitude | 16.29 (0.008) | |||
| E(B-V) | 0.053 | |||
* 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.