All names: SDSSJ163446.46-005345.6, GALEX J163446.5-005345, Gaia DR3 4383151087782512640, TIC 57993681, Gaia DR2 4383151087782512640, SDSS J163446.46-005345.6, 2MASS J16344648-0053460, USNO-B1.0 0891-00276415, SDSS J163446.48-005345.6, SDSS J163446.47-005345.6, Gaia EDR3 4383151087782512640
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Geier 2020 | Gaia DR2 | Stilism | Harris et al. 2003 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 34 46.46 (0.07) | 16 34 46.47 | 16 34 46.46 (0.1) | 16 34 46.47 (0.07) | 16 34 46.47 | ||||
| Declination | -00 53 45.66 (0.03) | -00 53 45.60 | -00 53 45.66 (0.05) | -00 53 45.65 (0.03) | -00 53 45.65 | ||||
| Spectral type | sdB+MS | sdB-He | sdBHe | SDB | |||||
| Effective temperature | [K] | 28410.0 (192) | |||||||
| log(g) | [cgs] | 5.01 (0.03) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.26 (0.08) | 0.37 (0.1) | 0.37 (0.1) | 0.26 (0.08) | ||||
| Distance | [pc] | 3816.63 (1106) | 2678.81 (731) | 2678.81 (731) | 3816.79 (1106) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -7.606559406 (0.1) | -8.237 (0.2) | -8.237 (0.2) | -7.607 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -0.925767815 (0.07) | -1.091 (0.1) | -1.091 (0.1) | -0.926 (0.07) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.80 | ||||||||
| V magnitude | |||||||||
| R magnitude | 17.00 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.51 (0.1) | 16.51 (0.1) | |||||||
| H magnitude | 16.37 (0.2) | 16.37 (0.2) | |||||||
| K magnitude | 15.89 (0.3) | 15.89 (0.3) | |||||||
| u magnitude | 16.91 (0.009) | 17.00 | 16.91 (0.009) | 17.01 (0.02) | |||||
| g magnitude | 16.90 (0.004) | 16.92 | 16.90 (0.004) | 16.93 (0.01) | |||||
| r magnitude | 17.11 (0.005) | 17.11 | 17.11 (0.005) | 17.12 (0.01) | |||||
| i magnitude | 17.25 (0.007) | 17.23 | 17.25 (0.007) | 17.25 (0.01) | |||||
| z magnitude | 17.29 (0.02) | 17.28 | 17.29 (0.02) | 17.29 (0.02) | |||||
| G magnitude | 16.94 (0.005) | 16.96 (0.0009) | 16.96 | 16.94 (0.003) | |||||
| BP magnitude | 16.95 (0.005) | 16.90 (0.007) | 16.90 | ||||||
| RP magnitude | 16.89 (0.005) | 16.90 (0.006) | 16.90 | ||||||
| Pan g magnitude | 16.92 (0.003) | 16.93 (0.003) | |||||||
| Pan r magnitude | 17.11 (0.004) | 17.11 (0.004) | |||||||
| Pan i magnitude | 17.23 (0.006) | 17.23 (0.006) | |||||||
| Pan z magnitude | 17.33 (0.006) | 17.33 (0.006) | |||||||
| Pan y magnitude | 17.38 (0.01) | 17.38 (0.01) | |||||||
| E(B-V) | 0.119 | ||||||||
* 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.