All names: TIC 286862643, WDJ205422.62+233743.10, Gaia DR2 1842543963578582016, Gaia EDR3 1842543963578582016, SDSS J205422.60+233742.8, GALEX J205422.5+233742, J2054+2337, 2MASS J20542260+2337433, Gaia DR3 1842543963578582016
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 54 22.58 (0.04) | 20 54 22.58 | 20 54 22.58 | 20 54 22.62 (0.04) | 20 54 22.58 | |||||||
| Declination | 23 37 42.54 (0.03) | 23 37 42.56 | 23 37 42.54 | 23 37 43.10 (0.03) | 23 37 42.56 | |||||||
| Spectral type | DA | DA | DA | DA | ||||||||
| Effective temperature | [K] | 17023.0 (196) | 17018.0 (194) | 16056.0 | 17440.0 | 16402.0 (195) | ||||||
| log(g) | [cgs] | 8.19 (0.01) | 8.20 (0.01) | 8.14 | 8.30 | 8.14 (0.01) | ||||||
| Mass | [M☉] | 0.729 (0.009) | 0.737 (0.01) | 0.699 | 0.781 | 0.7 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.2011 | 0.2155 | |||||||||
| 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] | 10.33 (0.05) | 10.43 (0.08) | 10.33 | 10.33 (0.05) | 10.43 (0.08) | ||||||
| Distance | [pc] | 96.84 (0.5) | 95.92 (0.8) | 96.84 | 96.84 (0.5) | 95.92 (0.8) | ||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -35.74738171 (0.04) | -35.81893277 (0.1) | -35.747 (0.04) | -35.81893277 | |||||||
| Proper motion (declination) | [mas/yr] | -35.19399813 (0.05) | -35.07166718 (0.1) | -35.194 (0.05) | -35.07166718 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.59 (0.1) | |||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.30 (0.006) | 16.30 (0.006) | ||||||||||
| g magnitude | 16.12 (0.003) | 16.12 (0.003) | ||||||||||
| r magnitude | 16.45 (0.004) | 16.45 (0.004) | ||||||||||
| i magnitude | 16.71 (0.005) | 16.71 (0.005) | ||||||||||
| z magnitude | 16.99 (0.01) | 16.99 (0.01) | ||||||||||
| G magnitude | 16.30 (0.003) | 16.32 | 16.30 | 16.30 (0.003) | 16.32 | |||||||
| BP magnitude | 16.24 (0.003) | 16.22 | 16.22 | |||||||||
| RP magnitude | 16.43 (0.004) | 16.43 | 16.43 | |||||||||
| Pan g magnitude | 16.17 (0.003) | |||||||||||
| Pan r magnitude | 16.46 (0.002) | |||||||||||
| Pan i magnitude | 16.75 (0.004) | |||||||||||
| Pan z magnitude | 16.99 (0.003) | |||||||||||
| Pan y magnitude | 17.16 (0.005) | |||||||||||
| E(B-V) | 0.009 | |||||||||||
* 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.