All names: Gaia EDR3 1309111357581001088, SDSS J171145.08+301319.9, V* V1247 Her, Gaia DR2 1309111357581001088, SDSS J171145.08+301320.0, Gaia DR3 1309111357581001088
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|
| Right ascension | 17 11 45.08 (0.3) | 17 11 45.08 (0.3) | |||
| Declination | 30 13 19.83 (0.4) | 30 13 20.05 (0.4) | |||
| Spectral type | CV | ||||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.35 (0.4) | 2.35 (0.4) | ||
| Distance | [pc] | 425.24 (75) | 425.24 (75) | ||
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 2.256 (0.4) | 2.256 (0.4) | ||
| Proper motion (declination) | [mas/yr] | -13.771 (0.6) | -13.771 (0.6) | ||
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 20.43 (0.05) | ||||
| g magnitude | 20.20 (0.02) | ||||
| r magnitude | 20.16 (0.02) | ||||
| i magnitude | 20.15 (0.03) | ||||
| z magnitude | 20.29 (0.1) | ||||
| G magnitude | 20.16 (0.006) | 20.16 (0.006) | |||
| BP magnitude | 20.40 (0.06) | ||||
| RP magnitude | 19.85 (0.08) | ||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.025 | ||||
* 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.