All names: SDSS J161828.12+054849.5, SDSS J161828.14+054849.5, Gaia DR2 4437871268939089408, Gaia DR3 4437871268939089408, SDSS J161828.13+054849.5, GALEX J161828.1+054849, SDSS J161828.14+054849.6, Gaia EDR3 4437871268939089408
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 18 28.12 (0.1) | 16 18 28.13 | 16 18 28.12 (0.2) | 16 18 28.12 | 16 18 28.14 (0.1) | 16 18 28.14 | ||||
| Declination | 05 48 48.27 (0.1) | 05 48 49.54 | 05 48 48.31 (0.1) | 05 48 48.27 | 05 48 49.79 (0.1) | 05 48 49.56 | ||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 7068.0 (154) | 7926.0 (65) | |||||||
| log(g) | [cgs] | 7.85 (0.05) | 8.26 (0.1) | |||||||
| Mass | [M☉] | 0.507 (0.04) | 0.75 (0.07) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 8.94 (0.2) | 8.74 (0.2) | 8.94 | 8.94 (0.2) | |||||
| Distance | [pc] | 111.82 (2) | 114.40 (3) | 111.82 | 111.82 (2) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.03024847 (0.2) | -14.06160415 (0.3) | -14.03 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -95.29594938 (0.2) | -95.19078135 (0.2) | -95.296 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.15 (0.02) | 19.15 (0.02) | 19.22 (0.03) | |||||||
| g magnitude | 18.63 (0.008) | 18.63 (0.008) | 18.62 (0.02) | |||||||
| r magnitude | 18.48 (0.009) | 18.48 (0.009) | 18.49 (0.02) | |||||||
| i magnitude | 18.44 (0.01) | 18.44 (0.01) | 18.40 (0.02) | |||||||
| z magnitude | 18.49 (0.03) | 18.49 (0.03) | 18.47 (0.03) | |||||||
| G magnitude | 18.44 (0.02) | 18.47 | 18.44 | 18.44 (0.003) | ||||||
| BP magnitude | 18.64 (0.02) | 18.64 | ||||||||
| RP magnitude | 18.11 (0.03) | 18.11 | ||||||||
| Pan g magnitude | 18.62 (0.006) | |||||||||
| Pan r magnitude | 18.48 (0.006) | |||||||||
| Pan i magnitude | 18.44 (0.006) | |||||||||
| Pan z magnitude | 18.45 (0.008) | |||||||||
| Pan y magnitude | 18.50 (0.02) | |||||||||
| E(B-V) | 0.018 | |||||||||
* 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.