All names: WD 1744-52, L 270-31, WDJ174746.92-520710.89, uvby98 600225114 V, USNO-B1.0 0378-00947302, V* V820 Ara, GEN# +6.00225114, GALEX J174746.8-520711, BPM 25114, Gaia EDR3 5945252202546434432, Gaia DR2 5945252202546434432, Gaia DR3 5945252202546434432, WD 1743-521
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Gaia DR2 | Stilism | Ferrario et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 47 47.01 (0.03) | 17 47 47.01 (0.04) | 17 47 47.01 | 17 47 46.92 (0.03) | 17 47 47.01 | 17 47 47.50 | ||||
| Declination | -52 07 12.60 (0.03) | -52 07 12.55 (0.04) | -52 07 12.60 | -52 07 10.89 (0.03) | -52 07 12.55 | -52 07 02.28 | ||||
| Spectral type | DAH | DA | DA: | DAP6 | DAP6 | |||||
| Effective temperature | [K] | 14852.0 (292) | 20000.0 | 15639.0 (158) | ||||||
| log(g) | [cgs] | 8.82 (0.01) | 8.00 (0) | 8.86 (0.007) | ||||||
| Mass | [M☉] | 1.116 (0.008) | 1.135 (0.004) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 25.69 (0.05) | 25.69 (0.05) | 25.69 (0.05) | 25.69 | 25.69 (0.05) | 25.69 (0.05) | |||
| Distance | [pc] | 38.92 (0.07) | 38.93 (0.08) | 38.93 (0.08) | 38.92 | 38.92 (0.07) | 38.93 (0.08) | |||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 51.6592362 (0.04) | 51.57846975 (0.08) | 51.659 (0.04) | 51.57846975 | |||||
| Proper motion (declination) | [mas/yr] | -107.3521858 (0.03) | -107.3423212 (0.07) | -107.352 (0.03) | -107.3423212 | |||||
| Variability | ||||||||||
| Magnetic | yes | yes | ||||||||
| Bd | [MG] | 36 | ||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.80 | |||||||||
| V magnitude | 15.62 | |||||||||
| R magnitude | 15.90 | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 15.67 (0.002) | 15.69 | 15.67 | 15.67 (0.003) | 15.69 | |||||
| BP magnitude | 15.64 (0.002) | 15.63 | 15.63 | |||||||
| RP magnitude | 15.75 (0.002) | 15.75 | 15.75 | |||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.005 | |||||||||
* 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.