All names: Gaia DR2 1628591542117357440, PTF1 J162028.94+630446.7, Gaia DR3 1628591542117357440, GALEX J162028.8+630447, SDSS J162028.93+630446.7, Gaia EDR3 1628591542117357440, SDSS J162028.93+630446.8, WIRED J162028.93+630446.7
| 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 20 28.94 (0.1) | 16 20 28.94 | 16 20 28.94 (0.1) | 16 20 28.94 | 16 20 28.95 (0.1) | 16 20 28.93 | ||||
| Declination | 63 04 46.70 (0.1) | 63 04 46.74 | 63 04 46.70 (0.2) | 63 04 46.70 | 63 04 46.73 (0.1) | 63 04 46.78 | ||||
| Spectral type | DA | DA+M | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 23551.0 (286) | ||||||||
| log(g) | [cgs] | 7.12 (0.04) | ||||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.58 (0.1) | 1.48 (0.2) | 1.58 | 1.58 (0.1) | |||||
| Distance | [pc] | 631.70 (44) | 675.16 (69) | 631.70 | 631.71 (44) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.386838202 (0.1) | -4.673803963 (0.3) | -4.387 (0.1) | ||||||
| Proper motion (declination) | [mas/yr] | -2.025938502 (0.1) | -1.365448876 (0.3) | -2.026 (0.1) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.29 (0.01) | 18.29 (0.01) | 18.27 (0.02) | |||||||
| g magnitude | 18.29 (0.007) | 18.29 (0.007) | 18.32 (0.02) | |||||||
| r magnitude | 18.59 (0.009) | 18.59 (0.009) | 18.60 (0.02) | |||||||
| i magnitude | 18.49 (0.01) | 18.49 (0.01) | 18.50 (0.02) | |||||||
| z magnitude | 18.21 (0.02) | 18.21 (0.02) | 18.23 (0.03) | |||||||
| G magnitude | 18.36 (0.02) | 18.38 | 18.36 | 18.36 (0.003) | ||||||
| BP magnitude | 18.43 (0.02) | 18.41 | ||||||||
| RP magnitude | 18.13 (0.02) | 18.15 | ||||||||
| Pan g magnitude | 18.34 (0.002) | |||||||||
| Pan r magnitude | 18.60 (0.009) | |||||||||
| Pan i magnitude | 18.53 (0.007) | |||||||||
| Pan z magnitude | 18.31 (0.009) | |||||||||
| Pan y magnitude | 18.17 (0.02) | |||||||||
| E(B-V) | 0.021 | |||||||||
* 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.