All names: SDSS J172045.36+561214.8, SDSS J172045.37+561214.9, SDSS J172045.35+561214.8, WD 1719+562, PSO J172045.342+561214.854, Gaia DR2 1420767141338622592
| Parameter | Unit | Pan-STARRS DR1 | Gaia DR2 | Ferrario et al. 2015 | Kulebi et al. 2009 | Harris et al. 2003 | SDSS DR12 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 20 45.35 (0.6) | 17 20 45.37 | 17 20 45.36 | 17 20 45.37 | 17 20 44.38 | 17 20 45.37 | ||||
| Declination | 56 12 14.96 (0.6) | 56 12 14.90 | 56 12 14.80 | 56 12 14.90 | 56 12 13.32 | 56 12 14.90 | ||||
| Spectral type | DA | DAH | DAH | DAH | DAH | DAH | ||||
| Effective temperature | [K] | 22500.0 | 46580.0 (3487) | |||||||
| log(g) | [cgs] | 8.00 (0) | 9.95 (0.06) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | ||||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | ||||||||||
| log(P/H) | ||||||||||
| log(S/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Ni/H) | ||||||||||
| Parallax | [mas] | 2.03 (0.6) | ||||||||
| Distance | [pc] | 491.70 (155) | ||||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -7.1417244179 (1) | 0.0 | |||||||
| Proper motion (declination) | [mas/yr] | 6.9651827574 (2) | 1.0 | |||||||
| Variability | ||||||||||
| Magnetic | yes | yes | yes | yes | ||||||
| Bd | [MG] | 19.79 (5) | 19.79 (5) | |||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.99 | 19.95 (0.04) | 19.95 | 19.99 | 19.95 (0.04) | |||||
| g magnitude | 20.10 | 20.09 (0.02) | 20.10 | 20.10 | 20.10 (0.02) | |||||
| r magnitude | 20.47 | 20.47 (0.03) | 20.47 | 20.47 | 20.47 (0.03) | |||||
| i magnitude | 20.72 | 20.71 (0.06) | 20.73 | 20.72 | 20.73 (0.06) | |||||
| z magnitude | 21.30 | 21.31 (0.4) | 21.28 | 21.30 | 21.28 (0.4) | |||||
| G magnitude | 20.38 | |||||||||
| BP magnitude | 20.00 | |||||||||
| RP magnitude | 20.40 | |||||||||
| Pan g magnitude | 20.18 (0.01) | |||||||||
| Pan r magnitude | 20.51 (0.02) | |||||||||
| Pan i magnitude | 20.76 (0.06) | |||||||||
| Pan z magnitude | 21.02 (0.03) | |||||||||
| 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 at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.