All names: SDSS J093128.91+394120.0, Gaia DR2 813190351703463552, [HHD2009] SDSS J0931+3941, Gaia EDR3 813190351703463552, WD 0928+399.1, 2MASS J09312894+3941198, SDSS J093128.90+394119.9, WISEA J093128.92+394119.8, TIC 416857833, WISE J093128.93+394119.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 31 28.92 (0.3) | 09 31 28.91 | 09 31 28.92 (0.3) | 09 31 28.90 | 09 31 28.91 | 09 31 28.91 | 09 31 28.63 | 09 31 28.91 | |||
| Declination | 39 41 19.98 (0.3) | 39 41 19.96 | 39 41 19.98 (0.3) | 39 41 19.90 | 39 41 19.96 | 39 41 19.96 | 39 41 15.36 | 39 41 19.99 | |||
| Spectral type | DA+M | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 16910.0 (834) | 6300.0 (2) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 7.57 (0.2) | 5.39 (0.8) | 5.18 (0.3) | |||||||
| Mass | [M☉] | 0.41 (0.08) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.74 (0.4) | 1.36 (0.5) | ||||||||
| Distance | [pc] | 364.60 (59) | 736.66 (269) | ||||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -11.20582279 (0.4) | -11.28593048 (0.6) | 2.0 (3) | 3.4 | ||||||
| Proper motion (declination) | [mas/yr] | 8.599071422 (0.3) | 4.717047869 (0.7) | 7.0 (3) | 10.0 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.55 (0.05) | ||||||||||
| H magnitude | 15.02 (0.09) | ||||||||||
| K magnitude | 14.79 (0.08) | ||||||||||
| u magnitude | 19.26 (0.02) | 19.32 | 19.26 (0.02) | 19.32 (0.02) | 19.32 | 19.31 (0.02) | |||||
| g magnitude | 18.85 (0.009) | 18.91 | 18.85 (0.009) | 18.91 (0.03) | 18.91 | 18.91 (0.03) | |||||
| r magnitude | 18.57 (0.009) | 18.69 | 18.57 (0.009) | 18.69 (0.02) | 18.69 | 18.70 (0.02) | |||||
| i magnitude | 17.62 (0.008) | 17.71 | 17.62 (0.008) | 17.71 (0.02) | 17.71 | 17.71 (0.02) | |||||
| z magnitude | 16.93 (0.01) | 16.98 | 16.93 (0.01) | 16.98 (0.02) | 16.98 | 16.99 (0.02) | |||||
| G magnitude | 18.57 (0.03) | 18.52 | |||||||||
| BP magnitude | 18.90 (0.03) | 18.92 | |||||||||
| RP magnitude | 17.18 (0.01) | 17.22 | |||||||||
| Pan g magnitude | 18.91 (0.007) | ||||||||||
| Pan r magnitude | 18.66 (0.01) | ||||||||||
| Pan i magnitude | 17.71 (0.005) | ||||||||||
| Pan z magnitude | 17.12 (0.005) | ||||||||||
| Pan y magnitude | 16.81 (0.008) | ||||||||||
| E(B-V) | 0.018 | ||||||||||
* 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.