All names: Gaia EDR3 1308968180551404800, TIC 257339448, Gaia DR2 1308968180551404800, WIRED J170947.12+293111.8, [HHD2009] SDSS J1709+2931, SDSS J170947.12+293111.7, SDSS J170947.13+293111.9, WD 1707+295, 2MASS J17094712+2931118, SDSS J170947.10+293111.8, SDSS J170947.12+293111.8, SDSS J170947.13+293111.8, Gaia DR3 1308968180551404800
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 09 47.12 (0.4) | 17 09 47.12 | 17 09 47.12 (0.5) | 17 09 47.12 | 17 09 47.12 (0.4) | 17 09 47.12 | 17 09 46.85 | 17 09 47.13 | ||
| Declination | 29 31 11.98 (0.5) | 29 31 11.85 | 29 31 11.98 (0.6) | 29 31 11.78 | 29 31 11.84 (0.5) | 29 31 11.79 | 29 31 06.24 | 29 31 11.85 | ||
| Spectral type | DA+M | DA+M | DA+M | DA dM | DA+M | |||||
| Effective temperature | [K] | 16910.0 (1054) | 6300.0 (1) | 6300.0 (1) | ||||||
| log(g) | [cgs] | 7.60 (0.2) | 7.05 (0.1) | 6.55 (0.3) | ||||||
| Mass | [M☉] | 0.42 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | -0.67 (0.6) | -1.57 (0.7) | |||||||
| Distance | [pc] | |||||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.499552959 (0.6) | -0.411211171 (1) | -1.5 (0.6) | -0.4 | |||||
| Proper motion (declination) | [mas/yr] | 8.724692681 (0.6) | 11.20939313 (1) | 8.725 (0.6) | 8.4 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.85 (0.08) | |||||||||
| H magnitude | 15.33 (0.07) | |||||||||
| K magnitude | 14.94 (0.1) | |||||||||
| u magnitude | 19.82 (0.03) | 19.79 | 19.81 (0.03) | 19.79 (0.03) | 19.79 | 19.81 (0.03) | ||||
| g magnitude | 19.35 (0.01) | 19.36 | 19.36 (0.01) | 19.36 (0.01) | 19.36 | 19.36 (0.02) | ||||
| r magnitude | 19.09 (0.01) | 19.10 | 19.09 (0.01) | 19.10 (0.01) | 19.10 | 19.09 (0.01) | ||||
| i magnitude | 18.15 (0.008) | 18.15 | 18.15 (0.008) | 18.15 (0.02) | 18.15 | 18.14 (0.02) | ||||
| z magnitude | 17.44 (0.01) | 17.44 | 17.44 (0.01) | 17.43 (0.02) | 17.44 | 17.43 (0.02) | ||||
| G magnitude | 18.81 (0.03) | 18.73 | 18.81 (0.007) | |||||||
| BP magnitude | 19.32 (0.03) | 19.30 | ||||||||
| RP magnitude | 17.66 (0.01) | 17.67 | ||||||||
| Pan g magnitude | 19.32 (0.008) | |||||||||
| Pan r magnitude | 19.11 (0.007) | |||||||||
| Pan i magnitude | 18.17 (0.006) | |||||||||
| Pan z magnitude | 17.58 (0.008) | |||||||||
| Pan y magnitude | 17.25 (0.009) | |||||||||
| E(B-V) | ||||||||||
* 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.