All names: GALEX J172433.6+623409, [HHD2009] SDSS J1724+6234, [SGR2010] J1724+6234, TIC 219751122, SDSS J172433.70+623410.0, SDSS J172433.69+623410.1, SDSS J172433.70+623410.1, Gaia DR2 1440058794406332032, WISEA J172433.69+623410.6, Gaia DR3 1440058798698752896, 2MASS J17243374+6234098, SDSS J172433.70+623410.3, WISE J172433.70+623410.7, WIRED J172433.70+623410.0, WD 1724+626, Gaia EDR3 1440058798698752896, USNO-B1.0 1525-00289452
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 24 33.62 (0.3) | 17 24 33.70 | 17 24 33.70 | 17 24 33.70 (0.3) | 17 24 33.69 | 17 24 32.52 | 17 24 33.70 | ||||
| Declination | 62 34 11.16 (0.4) | 62 34 10.10 | 62 34 09.98 | 62 34 10.23 (0.4) | 62 34 10.18 | 62 34 06.60 | 62 34 10.02 | ||||
| Spectral type | DA+M | DA | DA+dM | DA+M | DA+M | DA+M | |||||
| Effective temperature | [K] | 23627.0 (442) | 23200.0 (440) | 9042.0 (31) | 21018.0 (245) | ||||||
| log(g) | [cgs] | 7.62 (0.07) | 7.51 (0.06) | 8.64 (0.04) | 7.00 (0.05) | ||||||
| Mass | [M☉] | 0.455 (0.03) | 0.43 (0.01) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0398 | |||||||||
| 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] | 3.81 (0.3) | 3.81 (0.3) | ||||||||
| Distance | [pc] | 262.33 (24) | 335.00 (10) | 262.33 (24) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -34.8332578 (0.4) | -34.833 (0.4) | -35.9 | |||||||
| Proper motion (declination) | [mas/yr] | 57.79068866 (0.5) | 57.791 (0.5) | 70.4 | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | 16.90 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 17.40 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.69 (0.07) | ||||||||||
| H magnitude | 15.08 (0.09) | ||||||||||
| K magnitude | 15.16 (0.2) | ||||||||||
| u magnitude | 17.23 (0.009) | 17.23 | 17.20 (0.009) | 17.23 (0.02) | 17.23 | 17.19 (0.02) | |||||
| g magnitude | 17.27 (0.004) | 17.30 | 17.25 (0.004) | 17.30 (0.02) | 17.29 | 17.28 (0.02) | |||||
| r magnitude | 17.47 (0.006) | 17.56 | 17.55 (0.006) | 17.55 (0.02) | 17.55 | 17.55 (0.02) | |||||
| i magnitude | 17.19 (0.006) | 17.23 | 17.18 (0.006) | 17.23 (0.02) | 17.24 | 17.19 (0.02) | |||||
| z magnitude | 16.77 (0.01) | 16.86 | 16.84 (0.01) | 16.86 (0.02) | 16.87 | 16.82 (0.02) | |||||
| G magnitude | 17.57 (0.005) | 17.57 (0.005) | |||||||||
| BP magnitude | 17.37 (0.005) | ||||||||||
| RP magnitude | 16.83 (0.006) | ||||||||||
| Pan g magnitude | 17.37 (0.005) | ||||||||||
| Pan r magnitude | 17.55 (0.004) | ||||||||||
| Pan i magnitude | 17.26 (0.003) | ||||||||||
| Pan z magnitude | 16.94 (0.006) | ||||||||||
| Pan y magnitude | 16.78 (0.02) | ||||||||||
| E(B-V) | 0.020 | ||||||||||
* 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.