All names: [HHD2009] SDSS J1544-0057, Gaia DR3 4404387841338627072, Gaia EDR3 4404387841338627072, LAMOST J154452.48-005731.1, GALEX J154452.5-005730, SDSS J154452.47-005731.0, TIC 187350007, 2MASS J15445247-0057310, WD 1542-008, Gaia DR2 4404387841338627072, SDSS J154452.48-005731.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 44 52.46 (0.2) | 15 44 52.48 | 15 44 52.46 (0.3) | 15 44 52.48 (0.2) | 15 44 52.63 | |||
| Declination | -00 57 31.09 (0.2) | -00 57 31.06 | -00 57 31.10 (0.2) | -00 57 31.11 (0.2) | -00 57 28.08 | |||
| Spectral type | DA+? | WD K | ||||||
| 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] | 3.15 (0.2) | 4.04 (0.3) | 3.15 (0.2) | ||||
| Distance | [pc] | 317.83 (24) | 247.73 (20) | 317.82 (24) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -18.82230963 (0.3) | -17.78053375 (0.6) | -18.822 (0.3) | ||||
| Proper motion (declination) | [mas/yr] | 0.767990882 (0.2) | -0.513033049 (0.5) | 0.768 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 14.06 (0.003) | |||||||
| H magnitude | 13.47 (0.003) | |||||||
| K magnitude | 13.29 (0.004) | |||||||
| u magnitude | 17.67 (0.01) | 17.65 (0.009) | 17.66 | |||||
| g magnitude | 16.97 (0.004) | 16.94 (0.004) | 16.96 | |||||
| r magnitude | 16.15 (0.004) | 16.11 (0.004) | 16.14 | |||||
| i magnitude | 15.66 (0.004) | 15.63 (0.004) | 15.64 | |||||
| z magnitude | 15.32 (0.005) | 15.26 (0.005) | 15.30 | |||||
| G magnitude | 16.07 (0.004) | 16.05 | 16.07 (0.005) | |||||
| BP magnitude | 16.62 (0.004) | 16.63 | ||||||
| RP magnitude | 15.21 (0.003) | 15.22 | ||||||
| Pan g magnitude | 16.85 (0.006) | |||||||
| Pan r magnitude | 16.06 (0.004) | |||||||
| Pan i magnitude | 15.60 (0.002) | |||||||
| Pan z magnitude | 15.35 (0.004) | |||||||
| Pan y magnitude | 15.19 (0.004) | |||||||
| E(B-V) | 0.091 | |||||||
* 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.