All names: USNO-B1.0 0726-01072958, Gaia DR2 6871494782188972672, ** LDS 4818B, Gaia DR3 6871494782188972672, WD 1943-174, LP 813-17, Gaia EDR3 6871494782188972672, WDS J19461-1718B, WDJ194549.67-171918.81, J1945-1719
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 45 49.71 (0.1) | 19 45 49.71 (0.2) | 19 45 49.71 | 19 45 49.67 (0.1) | 19 45 49.71 | 19 46 03.55 | ||||
| Declination | -17 19 22.48 (0.1) | -17 19 22.37 (0.2) | -17 19 22.48 | -17 19 18.81 (0.1) | -17 19 22.37 | -17 18 38.16 | ||||
| Spectral type | DC | DA: | DC | DC | ||||||
| Effective temperature | [K] | 5151.0 (23) | 5546.0 (75) | |||||||
| log(g) | [cgs] | 7.80 (0.02) | 8.04 (0.03) | |||||||
| Mass | [M☉] | 0.455 (0.01) | 0.61 (0.03) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 3.6800 | ||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 18.90 (0.2) | 19.04 (0.2) | 19.04 (0.2) | 18.90 | 18.90 (0.2) | 19.04 (0.2) | |||
| Distance | [pc] | 52.90 (0.4) | 52.52 (0.6) | 52.51 (0.6) | 52.90 | 52.90 (0.4) | 52.51 (0.6) | |||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 30.80626508 (0.2) | 30.97341763 (0.3) | 30.806 (0.2) | 30.97341763 | |||||
| Proper motion (declination) | [mas/yr] | -229.5686489 (0.1) | -229.2028832 (0.3) | -229.569 (0.1) | -229.2028832 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 18.80 | |||||||||
| V magnitude | ||||||||||
| R magnitude | 18.00 | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.94 (0.02) | |||||||||
| H magnitude | ||||||||||
| K magnitude | 16.65 (0.06) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 18.04 (0.02) | 18.06 | 18.04 | 18.04 (0.003) | 18.06 | |||||
| BP magnitude | 18.43 (0.02) | 18.42 | 18.42 | |||||||
| RP magnitude | 17.50 (0.01) | 17.52 | 17.52 | |||||||
| Pan g magnitude | 18.49 (0.005) | 18.49 (0.005) | ||||||||
| Pan r magnitude | 18.03 (0.002) | 18.03 (0.003) | ||||||||
| Pan i magnitude | 17.85 (0.003) | 17.85 (0.003) | ||||||||
| Pan z magnitude | 17.80 (0.007) | 17.80 (0.006) | ||||||||
| Pan y magnitude | 17.79 (0.01) | 17.79 (0.01) | ||||||||
| E(B-V) | 0.001 | |||||||||
* 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.