All names: SDSS J164122.32+334452.0, Gaia EDR3 1326422863218478592, TIC 43272094, 2MASS J16412233+3344520, UCAC4 619-052886, [DWS97] Her 3, FBS B 579, Gaia DR2 1326422863218478592, SDSSJ164122.32+334452.0, KUV 16395+3351, UCAC2 43629193, Gaia DR3 1326422863218478592, SDSS J164122.33+334452.0, NSV 20742, PG 1639+338, FBS 1639+338, KUV 433-6, GALEX J164122.3+334451
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 41 22.33 (0.02) | 16 41 22.33 | 16 41 22.32 | 16 41 22.33 (0.03) | 16 41 22.33 (0.03) | 16 41 22.33 | |||
| Declination | 33 44 51.83 (0.03) | 33 44 52.06 | 33 44 52.00 | 33 44 51.83 (0.04) | 33 44 52.10 (0.03) | 33 44 52.08 | |||
| Spectral type | sdB | sdB | SD_auto | ||||||
| Effective temperature | [K] | 28200.0 (500) | 28378.0 (128) | ||||||
| log(g) | [cgs] | 5.49 (0.1) | 5.38 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.58 (0.03) | 0.48 (0.04) | 0.48 (0.04) | 0.57 (0.03) | ||||
| Distance | [pc] | 1739.10 (100) | 2086.81 (194) | 2086.94 (194) | 1739.13 (100) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -0.234849302 (0.03) | -0.23 (0.07) | -0.229999363 (0.07) | -0.235 (0.03) | -4.5 | |||
| Proper motion (declination) | [mas/yr] | -17.36901035 (0.04) | -17.524 (0.1) | -17.52418426 (0.1) | -17.369 (0.04) | -19.0 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.31 (0.01) | ||||||||
| V magnitude | 15.52 (0.2) | ||||||||
| R magnitude | 15.84 (0.1) | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.17 (0.1) | 16.17 (0.1) | |||||||
| H magnitude | 16.39 | ||||||||
| K magnitude | 15.43 | ||||||||
| u magnitude | 15.06 (0.005) | 15.05 (0.005) | 15.05 (0.005) | 15.04 (0.01) | |||||
| g magnitude | 15.20 (0.004) | 15.20 (0.004) | 15.20 (0.004) | 15.22 (0.01) | |||||
| r magnitude | 15.71 (0.004) | 15.71 (0.004) | 15.71 (0.004) | 15.71 (0.009) | |||||
| i magnitude | 16.06 (0.005) | 16.06 (0.005) | 16.06 (0.005) | 16.06 (0.01) | |||||
| z magnitude | 16.37 (0.009) | 16.37 (0.009) | 16.37 (0.009) | 16.39 (0.02) | |||||
| G magnitude | 15.48 (0.001) | 15.49 (0.0007) | 15.49 | 15.48 (0.003) | |||||
| BP magnitude | 15.34 (0.001) | 15.28 (0.007) | 15.28 | ||||||
| RP magnitude | 15.75 (0.002) | 15.75 (0.002) | 15.75 | ||||||
| Pan g magnitude | 15.30 (0.004) | 15.30 (0.004) | |||||||
| Pan r magnitude | 15.73 (0.002) | 15.73 (0.002) | |||||||
| Pan i magnitude | 16.08 (0.002) | 16.08 (0.002) | |||||||
| Pan z magnitude | 16.36 (0.002) | 16.36 (0.002) | |||||||
| Pan y magnitude | 16.54 (0.007) | 16.54 (0.007) | |||||||
| E(B-V) | 0.022 | ||||||||
* 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.