All names: SDSS J170926.93+290821.7, 2MASS J17092683+2908222, Gaia DR3 1308888676412889216, LAMOST J170926.94+290821.8, SDSS J170926.95+290821.8, TIC 257339251, Gaia EDR3 1308888676412889216, GALEX J170927.0+290822, WD 1707+292, SDSS J170926.94+290821.8, Gaia DR2 1308888676412889216
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 09 26.95 (0.06) | 17 09 26.94 | 17 09 26.95 (0.07) | 17 09 26.95 | 17 09 26.94 (0.06) | 17 09 26.94 | 17 09 26.42 | 17 09 26.94 | ||||
| Declination | 29 08 21.79 (0.07) | 29 08 21.77 | 29 08 21.79 (0.09) | 29 08 21.79 | 29 08 21.76 (0.07) | 29 08 21.86 | 29 08 16.44 | 29 08 21.81 | ||||
| Spectral type | DA | DA | DA | DA_auto | DA | DA | DA | |||||
| Effective temperature | [K] | 21410.0 (290) | 18565.0 (626) | 20446.0 (191) | 20784.0 (197) | |||||||
| log(g) | [cgs] | 7.73 (0.04) | 7.73 (0.04) | 7.69 (0.03) | 7.71 (0.03) | |||||||
| Mass | [M☉] | 0.49 (0.02) | 0.482 (0.03) | 0.495 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0324 | ||||||||||
| 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] | 3.75 (0.08) | 3.76 (0.1) | 3.75 | 3.75 (0.08) | |||||||
| Distance | [pc] | 266.80 (6) | 266.12 (7) | 266.80 | 266.79 (6) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 10.77095993 (0.08) | 10.91677486 (0.2) | 10.771 (0.08) | 15.4 | |||||||
| Proper motion (declination) | [mas/yr] | 1.744786565 (0.09) | 1.688479535 (0.2) | 1.745 (0.09) | 1.2 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.37 (0.2) | |||||||||||
| H magnitude | 16.64 (0.2) | |||||||||||
| K magnitude | 15.60 (0.2) | |||||||||||
| u magnitude | 17.73 (0.01) | 17.73 (0.01) | 17.70 (0.02) | 17.70 | 17.69 (0.02) | |||||||
| g magnitude | 17.57 (0.005) | 17.57 (0.005) | 17.61 (0.01) | 17.61 | 17.60 (0.01) | |||||||
| r magnitude | 17.85 (0.006) | 17.85 (0.006) | 17.92 (0.01) | 17.91 (0.01) | ||||||||
| i magnitude | 18.05 (0.008) | 18.05 (0.008) | 18.13 (0.01) | 18.12 (0.01) | ||||||||
| z magnitude | 18.26 (0.03) | 18.26 (0.03) | 18.32 (0.03) | 18.33 (0.03) | ||||||||
| G magnitude | 17.77 (0.01) | 17.80 | 17.77 | 17.77 (0.003) | ||||||||
| BP magnitude | 17.69 (0.01) | 17.68 | ||||||||||
| RP magnitude | 17.76 (0.01) | 17.75 | ||||||||||
| Pan g magnitude | ||||||||||||
| Pan r magnitude | ||||||||||||
| Pan i magnitude | ||||||||||||
| Pan z magnitude | ||||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.021 | |||||||||||
* 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.