All names: WD 1739+240, SDSS J174146.23+240148.0, SDSS J174146.24+240148.1, Gaia DR2 4581383928942599296, USNO-B1.0 1140-00261882, LSPM J1741+2401, NLTT 45288, 2MASS J17414623+2401495, PM J17417+2401, LP 389-7
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 17 41 46.25 (0.03) | |
| Declination | 24 01 49.67 (0.04) | |
| Spectral type | DA | |
| Effective temperature | [K] | |
| log(g) | [cgs] | |
| Mass | [M☉] | |
| log(Luminosity) | [L☉] | |
| Cooling age | [Gyr] | |
| log(H/He) | ||
| log(C/He) | ||
| log(Ca/He) | ||
| log(Ca/H) | ||
| Parallax | [mas] | 31.67 (0.06) |
| Distance | [pc] | 31.58 (0.06) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | -30.474 (0.07) |
| Proper motion (declination) | [mas/yr] | -358.152 (0.09) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 16.80 | |
| V magnitude | ||
| R magnitude | 16.50 | |
| I magnitude | ||
| J magnitude | 15.99 (0.08) | |
| H magnitude | 15.57 (0.1) | |
| K magnitude | 15.71 (0.2) | |
| u magnitude | 17.28 (0.01) | |
| g magnitude | 16.61 (0.004) | |
| r magnitude | 16.47 (0.005) | |
| i magnitude | 16.43 (0.005) | |
| z magnitude | 16.49 (0.009) | |
| G magnitude | 16.44 (0.0007) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.