All names: EGGR 331, WD 1918+725, UCAC4 814-024218, Gaia DR2 2264426368997282048, Gaia DR3 2264426368997282048, Gaia EDR3 2264426368997282048, GD 533, 2MASS J19181093+7237250, GALEX J191811.0+723723, WDJ191810.96+723724.89, WD 1918+72, TIC 267544200
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | 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 | 19 18 11.39 (0.02) | 19 18 11.37 (0.03) | 19 18 11.39 | 19 18 10.96 (0.02) | 19 18 11.37 | 19 18 10.32 | ||||||
| Declination | 72 37 25.10 (0.02) | 72 37 25.10 (0.04) | 72 37 25.10 | 72 37 24.89 (0.02) | 72 37 25.10 | 72 37 24.96 | ||||||
| Spectral type | DA | DA | DA2.2 | DA2.5 | ||||||||
| Effective temperature | [K] | 19597.0 | 23340.0 | 22780.0 (360) | 22952.0 (260) | |||||||
| log(g) | [cgs] | 7.84 | 8.06 | 7.95 (0.05) | 8.01 (0.01) | |||||||
| Mass | [M☉] | 0.535 | 0.641 | 0.6 (0.03) | 0.635 (0.008) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0500 | 0.0386 | |||||||||
| 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] | 12.07 (0.02) | 12.12 (0.04) | 12.07 | 12.07 (0.02) | 12.12 (0.04) | ||||||
| Distance | [pc] | 82.85 (0.2) | 82.53 (0.2) | 85.00 | 82.85 | 82.85 (0.2) | 82.53 (0.2) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 120.3414986 (0.03) | 120.1864325 (0.06) | 120.341 (0.03) | 120.1864325 | |||||||
| Proper motion (declination) | [mas/yr] | 13.14039484 (0.03) | 13.03379514 (0.07) | 13.14 (0.03) | 13.03379514 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 14.89 (0.02) | |||||||||||
| V magnitude | 15.15 (0.01) | |||||||||||
| R magnitude | 15.42 (0.1) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.73 (0.08) | |||||||||||
| H magnitude | 15.66 (0.1) | |||||||||||
| K magnitude | 15.84 (0.2) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.14 (0.002) | 15.16 | 15.14 | 15.14 (0.003) | 15.16 | |||||||
| BP magnitude | 15.04 (0.002) | 15.01 | 15.01 | |||||||||
| RP magnitude | 15.35 (0.002) | 15.35 | 15.35 | |||||||||
| Pan g magnitude | 15.00 (0.002) | |||||||||||
| Pan r magnitude | 15.35 (0.003) | |||||||||||
| Pan i magnitude | 15.67 (0.002) | |||||||||||
| Pan z magnitude | 15.94 (0.003) | |||||||||||
| Pan y magnitude | 16.10 (0.02) | |||||||||||
| E(B-V) | 0.008 | |||||||||||
* 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.