All names: Gaia EDR3 1532785458991131136, SDSS J121708.52+390023.0, Gaia DR2 1532785458991131136, Gaia DR3 1532785458991131136, SDSS J121708.52+390022.95, GALEX J121708.4+390023, CBS 462, SDSS J121708.52+390022.9
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 17 08.49 (0.1) | 12 17 08.49 (0.2) | 12 17 08.49 | 12 17 08.54 (0.1) | ||||
| Declination | 39 00 22.90 (0.08) | 39 00 22.90 (0.1) | 39 00 22.90 | 39 00 23.02 (0.08) | ||||
| Spectral type | DA | DA | DA | DA+MS | ||||
| Effective temperature | [K] | 25940.0 (188) | 17054.0 (948) | |||||
| log(g) | [cgs] | 7.85 (0.02) | 7.34 (0.07) | |||||
| Mass | [M☉] | 0.564 (0.009) | 0.333 (0.03) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 2.83 (0.1) | 2.96 (0.2) | 2.83 | 2.83 (0.1) | |||
| Distance | [pc] | 353.45 (18) | 337.58 (21) | 353.45 | 353.46 (18) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -34.9924004 (0.1) | -34.9789453 (0.3) | -34.992 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -7.299019318 (0.1) | -7.594450159 (0.2) | -7.299 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 17.77 (0.03) | 17.77 (0.03) | ||||||
| g magnitude | 17.90 (0.02) | 17.90 (0.02) | ||||||
| r magnitude | 18.29 (0.02) | 18.29 (0.02) | ||||||
| i magnitude | 18.55 (0.08) | 18.55 (0.08) | ||||||
| z magnitude | 19.20 (0.4) | 18.80 (0.3) | ||||||
| G magnitude | 18.10 (0.01) | 18.12 | 18.10 | 18.10 (0.003) | ||||
| BP magnitude | 17.92 (0.01) | 17.84 | ||||||
| RP magnitude | 17.53 (0.05) | 17.48 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| 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.