All names: GALEX J122356.8-013412, 2QZ J122356.8-013412, Gaia DR2 3694709607378396416, Gaia DR3 3694709607378396416, Gaia EDR3 3694709607378396416
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 23 56.83 (0.6) | 12 23 56.86 (0.6) | ||
| Declination | -01 34 11.51 (0.3) | -01 34 11.52 (0.3) | ||
| Spectral type | DB | |||
| 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] | 4.37 (0.7) | 4.37 (0.7) | |
| Distance | [pc] | 228.81 (38) | 228.81 (38) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -27.712 (0.8) | -27.712 (0.8) | |
| Proper motion (declination) | [mas/yr] | 0.53 (0.5) | 0.53 (0.5) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 19.98 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 20.10 (0.006) | 20.10 (0.006) | ||
| BP magnitude | 20.25 (0.06) | |||
| RP magnitude | 20.17 (0.1) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.023 | |||
* 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.