All names: [CCH92] 1643.4+4156, SDSSJ164501.90+415113.2, SDSS J164501.90+415113.2, Gaia DR3 1356484503258824320, GALEX J164501.9+415113, Gaia EDR3 1356484915575691776, USNO-B1.0 1318-00310452, Gaia DR2 1356484503258824320
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 45 10.48 (0.5) | 16 45 01.90 | 16 45 01.91 (0.1) | ||
| Declination | 41 52 13.19 (0.5) | 41 51 13.21 | 41 51 13.22 (0.2) | ||
| 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] | 1.05 (0.5) | 0.03 (0.2) | 0.04 (0.2) | |
| Distance | [pc] | 950.93 (485) | 32362.46 (209152) | 24213.08 (97614) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -19.978 (0.7) | -1.567 (0.4) | -1.514 (0.2) | |
| Proper motion (declination) | [mas/yr] | -14.478 (0.7) | -0.12 (0.6) | 0.078 (0.2) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 18.40 | ||||
| V magnitude | |||||
| R magnitude | 19.00 | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 18.87 (0.02) | 18.87 (0.02) | |||
| g magnitude | 18.68 (0.008) | 18.68 (0.008) | |||
| r magnitude | 19.06 (0.01) | 19.06 (0.01) | |||
| i magnitude | 19.35 (0.02) | 19.35 (0.02) | |||
| z magnitude | 19.60 (0.07) | 19.50 (0.06) | |||
| G magnitude | 20.44 (0.008) | 18.93 (0.003) | 18.90 (0.004) | ||
| BP magnitude | 20.68 (0.1) | 18.79 (0.03) | |||
| RP magnitude | 19.86 (0.09) | 18.99 (0.06) | |||
| Pan g magnitude | 18.74 (0.01) | ||||
| Pan r magnitude | 19.07 (0.01) | ||||
| Pan i magnitude | 19.38 (0.009) | ||||
| Pan z magnitude | 19.61 (0.02) | ||||
| Pan y magnitude | 19.68 (0.04) | ||||
| E(B-V) | 0.020 | ||||
* 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.