All names: SDSS J165658.13+212139.3, V* V1229 Her, Gaia DR2 4565045873343899136, SDSS J165658.12+212139.3, Gaia EDR3 4565045873343899136, 1RXS J165658.7+212141, Gaia DR3 4565045873343899136
| Parameter | Unit | Gaia EDR3 | Stilism | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|
| Right ascension | 16 56 58.13 (0.05) | 16 56 58.13 | 16 56 58.12 (0.05) | |||
| Declination | 21 21 39.07 (0.07) | 21 21 39.07 | 21 21 39.37 (0.07) | |||
| Spectral type | DQ: | DQ | 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] | 1.82 (0.09) | 1.82 | 1.82 (0.09) | ||
| Distance | [pc] | 548.97 (28) | 548.98 | 548.97 (28) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 2.318 (0.08) | 2.318 (0.08) | |||
| Proper motion (declination) | [mas/yr] | -19.096 (0.08) | -19.096 (0.08) | |||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 18.38 | |||||
| V magnitude | 18.38 | |||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 18.00 (0.01) | |||||
| g magnitude | 18.49 (0.007) | |||||
| r magnitude | 18.27 (0.007) | |||||
| i magnitude | 18.18 (0.008) | |||||
| z magnitude | 18.04 (0.02) | |||||
| G magnitude | 18.08 (0.01) | 18.08 | 18.08 (0.01) | |||
| BP magnitude | 18.25 (0.04) | |||||
| RP magnitude | 17.68 (0.05) | |||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.042 | |||||
* 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.