All names: WIRED J211749.51-080020.6, TIC 256794142, Gaia DR3 6898404882598049408, SDSS J211749.51-080020.6, Gaia DR2 6898404878303023488, Gaia EDR3 6898404882598049408, [HHD2009] SDSS J2117-0800, SDSS J211749.51-080020.5, 2MASS J21174953-0800205, WD 2115-082, SDSS J211749.52-080020.6
| 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 | 21 17 49.52 (0.7) | 21 17 49.52 | 21 17 49.52 (5) | 21 17 49.51 | 21 17 49.52 (0.7) | 21 17 49.52 | 21 17 49.01 | 21 17 49.52 | |||
| Declination | -08 00 20.70 (0.5) | -08 00 20.60 | -08 00 20.70 (2) | -08 00 20.59 | -08 00 20.61 (0.5) | -08 00 20.59 | -08 00 16.20 | -08 00 20.63 | |||
| Spectral type | DA+M | DA+M | DA+M | DA+M | DA+M | ||||||
| Effective temperature | [K] | 27743.0 (1804) | 8738.0 (124) | 8590.0 (167) | |||||||
| log(g) | [cgs] | 7.93 (0.3) | 8.94 (0.07) | 9.14 (0.2) | |||||||
| Mass | [M☉] | 0.6 (0.2) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 3.87 (0.6) | 3.87 (0.6) | ||||||||
| Distance | [pc] | 258.38 (42) | 547.00 (47) | 258.38 (42) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.541638333 (0.9) | 2.542 (0.9) | 1.6 | |||||||
| Proper motion (declination) | [mas/yr] | -5.460517415 (0.6) | -5.461 (0.6) | 0.4 | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | yes | WDMS | |||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.72 (0.1) | ||||||||||
| H magnitude | 16.20 (0.2) | ||||||||||
| K magnitude | 15.65 (0.1) | ||||||||||
| u magnitude | 19.89 (0.04) | 19.91 | 19.90 (0.05) | 19.91 (0.05) | 19.89 | 19.90 (0.05) | |||||
| g magnitude | 19.81 (0.02) | 19.84 | 19.82 (0.02) | 19.84 (0.03) | 19.84 | 19.84 (0.03) | |||||
| r magnitude | 19.85 (0.02) | 19.85 | 19.85 (0.02) | 19.85 (0.02) | 19.86 | 19.85 (0.02) | |||||
| i magnitude | 19.41 (0.02) | 19.42 | 19.42 (0.02) | 19.42 (0.03) | 19.42 | 19.41 (0.03) | |||||
| z magnitude | 18.68 (0.04) | 18.68 | 18.70 (0.04) | 18.68 (0.04) | 18.68 | 18.66 (0.04) | |||||
| G magnitude | 19.89 (0.05) | 19.77 | 19.89 (0.01) | ||||||||
| BP magnitude | 19.81 (0.05) | 19.85 | |||||||||
| RP magnitude | 18.94 (0.04) | 18.67 | |||||||||
| Pan g magnitude | 19.82 (0.01) | ||||||||||
| Pan r magnitude | 19.87 (0.01) | ||||||||||
| Pan i magnitude | 19.43 (0.01) | ||||||||||
| Pan z magnitude | 18.85 (0.008) | ||||||||||
| Pan y magnitude | 18.50 (0.01) | ||||||||||
| E(B-V) | 0.022 | ||||||||||
* 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.