All names: NLTT 44854, SDSS J172830.78+072113.4, SDSS J172830.79+072113.4, ** LDS 4743A, Gaia DR3 4487104135457345920, Gaia DR2 4487104135457345920, LP567-039, WD 1726+074.2, LP 567-39, LSPM J1728+0721N, WDJ172830.82+072115.04, USNO-B1.0 0973-00360796, WDS J17285+0722A
| Parameter | Unit | Pan-STARRS DR1 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 28 30.73 (0.1) | 17 28 30.73 | 17 28 30.82 (0.09) | 17 28 30.73 | 17 28 31.22 | |||
| Declination | 07 21 10.46 (0.1) | 07 21 10.32 | 07 21 15.04 (0.07) | 07 21 10.46 | 07 21 37.44 | |||
| Spectral type | DA | DB? | DC? | |||||
| Effective temperature | [K] | 5605.0 (50) | ||||||
| log(g) | [cgs] | 8.13 (0.02) | ||||||
| Mass | [M☉] | 0.668 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 20.82 (0.2) | 21.14 | 21.14 (0.1) | 20.82 (0.2) | |||
| Distance | [pc] | 48.02 (0.4) | 47.30 | 47.30 (0.3) | 48.02 (0.4) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -79.5224123 (0.3) | -80.251 (0.1) | -79.5224123 | ||||
| Proper motion (declination) | [mas/yr] | -294.9925653 (0.3) | -295.357 (0.09) | -294.9925653 | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | 17.40 | |||||||
| V magnitude | ||||||||
| R magnitude | 16.40 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.34 (0.03) | 19.34 (0.03) | ||||||
| g magnitude | 18.35 (0.007) | 18.35 (0.007) | ||||||
| r magnitude | 17.86 (0.006) | 17.86 (0.006) | ||||||
| i magnitude | 17.67 (0.007) | 17.67 (0.007) | ||||||
| z magnitude | 17.59 (0.02) | 17.59 (0.02) | ||||||
| G magnitude | 17.91 | 17.89 | 17.89 (0.003) | 17.91 | ||||
| BP magnitude | 18.19 | 18.19 | ||||||
| RP magnitude | 17.27 | 17.27 | ||||||
| Pan g magnitude | 18.23 (0.01) | |||||||
| Pan r magnitude | 17.86 (0.004) | |||||||
| Pan i magnitude | 17.69 (0.008) | |||||||
| Pan z magnitude | 17.66 (0.01) | |||||||
| Pan y magnitude | 17.66 (0.02) | |||||||
| E(B-V) | 0.002 | |||||||
* 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.