All names: UCAC4 789-033510, Gaia EDR3 2222276590747697536, Gaia DR3 2222276590747697536, Gaia DR2 2222276590747697536, WD 2116+67, WD 2116+675, EGGR 300, EGGR 400, GALEX J211718.5+674450, 2MASS J21171824+6744509, GD 547, TIC 422431231, WDJ211718.31+674450.91
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 17 18.59 (0.03) | 21 17 18.58 (0.04) | 21 17 18.59 | 21 17 18.31 (0.03) | 21 17 18.58 | 21 17 17.71 | ||||
| Declination | 67 44 52.04 (0.03) | 67 44 52.01 (0.05) | 67 44 52.04 | 67 44 50.91 (0.03) | 67 44 52.01 | 67 44 44.88 | ||||
| Spectral type | DA | DA | DA3.6 | DA3 | ||||||
| Effective temperature | [K] | 14060.0 (340) | 14407.0 (159) | |||||||
| log(g) | [cgs] | 8.07 (0.05) | 8.07 (0.01) | |||||||
| Mass | [M☉] | 0.65 (0.03) | 0.654 (0.008) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | ||||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | ||||||||||
| log(P/H) | ||||||||||
| log(S/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Ni/H) | ||||||||||
| Parallax | [mas] | 12.14 (0.04) | 12.12 (0.05) | 12.14 | 12.14 (0.04) | 12.12 (0.05) | ||||
| Distance | [pc] | 82.40 (0.2) | 82.49 (0.3) | 83.00 | 82.40 | 82.40 (0.2) | 82.49 (0.3) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 101.6991771 (0.05) | 101.5196463 (0.09) | 101.699 (0.05) | 101.5196463 | |||||
| Proper motion (declination) | [mas/yr] | 70.70123004 (0.04) | 70.78742003 (0.08) | 70.701 (0.04) | 70.78742003 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.04 (0.05) | |||||||||
| V magnitude | 16.19 (0.01) | |||||||||
| R magnitude | 16.31 (0.1) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.29 (0.1) | |||||||||
| H magnitude | 15.96 (0.2) | |||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.08 (0.003) | 16.10 | 16.08 | 16.08 (0.003) | 16.10 | |||||
| BP magnitude | 16.06 (0.003) | 16.05 | 16.05 | |||||||
| RP magnitude | 16.16 (0.004) | 16.16 | 16.16 | |||||||
| Pan g magnitude | 15.97 (0.04) | |||||||||
| Pan r magnitude | 16.21 (0.002) | |||||||||
| Pan i magnitude | 16.47 (0.01) | |||||||||
| Pan z magnitude | 16.70 (0.008) | |||||||||
| Pan y magnitude | 16.84 (0.08) | |||||||||
| E(B-V) | 0.006 | |||||||||
* 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.