All names: 2MASS J17200858+5652116, [SGR2010] J1720+5652, Gaia DR3 1432866132930434176, GALEX J172008.5+565212, WD 1719+569, SDSS J172008.59+565211.8, WIRED J172008.58+565211.8, SDSS J172008.58+565211.7, SDSS J172008.58+565211.8, Gaia EDR3 1432866132930434176, [HHD2009] SDSS J1720+5652, Gaia DR2 1432866132930434176, TIC 462620125, SDSS J172008.57+565211.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 20 08.59 (0.2) | 17 20 08.58 | 17 20 08.59 (0.2) | 17 20 08.58 (0.2) | 17 20 08.58 | 17 20 07.90 | 17 20 08.59 | |||
| Declination | 56 52 11.46 (0.1) | 56 52 11.81 | 56 52 11.46 (0.2) | 56 52 11.76 (0.1) | 56 52 11.74 | 56 52 10.92 | 56 52 11.83 | |||
| Spectral type | DA+M1.5 | DA+M | DA+ME | DAH:M | ||||||
| Effective temperature | [K] | 6300.0 (1) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 6.77 (0.1) | 10.00 (0.003) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.27 (0.2) | 1.12 (0.2) | 1.27 (0.2) | ||||||
| Distance | [pc] | 790.06 (99) | 896.62 (157) | 790.08 (99) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 3.705109104 (0.2) | 4.49072024 (0.4) | 3.705 (0.2) | 11.7 | |||||
| Proper motion (declination) | [mas/yr] | -19.34437331 (0.2) | -18.7259622 (0.4) | -19.344 (0.2) | -23.7 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | yes | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.28 (0.1) | |||||||||
| H magnitude | 15.55 (0.1) | |||||||||
| K magnitude | 15.52 (0.2) | |||||||||
| u magnitude | 20.35 (0.05) | 20.36 (0.05) | 20.37 (0.05) | 20.37 | 20.36 (0.05) | |||||
| g magnitude | 19.92 (0.02) | 19.92 (0.02) | 19.94 (0.03) | 19.93 | 19.93 (0.03) | |||||
| r magnitude | 19.27 (0.01) | 19.26 (0.01) | 19.27 (0.02) | 19.27 | 19.28 (0.02) | |||||
| i magnitude | 18.23 (0.009) | 18.23 (0.009) | 18.23 (0.02) | 18.24 | 18.24 (0.02) | |||||
| z magnitude | 17.54 (0.02) | 17.56 (0.02) | 17.57 (0.03) | 17.58 | 17.56 (0.03) | |||||
| G magnitude | 18.80 (0.07) | 18.83 | 18.80 (0.004) | |||||||
| BP magnitude | 19.74 (0.07) | 19.67 | ||||||||
| RP magnitude | 17.80 (0.02) | 17.80 | ||||||||
| Pan g magnitude | 19.83 (0.02) | |||||||||
| Pan r magnitude | 19.27 (0.007) | |||||||||
| Pan i magnitude | 18.22 (0.005) | |||||||||
| Pan z magnitude | 17.69 (0.01) | |||||||||
| Pan y magnitude | 17.40 (0.01) | |||||||||
| E(B-V) | 0.025 | |||||||||
* 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.