All names: Gaia DR2 398026473430339200, Gaia EDR3 398026473430339200, Gaia DR3 398026473430339200, SDSS J012255.10+452520.6, SDSS J012307.94+302804.7
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 01 22 55.09 (0.6) | 01 22 55.08 (0.6) | ||
| Declination | 45 25 20.66 (0.5) | 45 25 20.70 (0.5) | ||
| 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] | 3.94 (0.8) | 3.94 (0.8) | |
| Distance | [pc] | 253.96 (51) | 253.96 (51) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 7.785 (0.6) | 7.785 (0.6) | |
| Proper motion (declination) | [mas/yr] | -2.306 (0.6) | -2.306 (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 | 20.29 (0.05) | |||
| g magnitude | 20.21 (0.02) | |||
| r magnitude | 20.30 (0.03) | |||
| i magnitude | 20.42 (0.04) | |||
| z magnitude | 20.41 (0.1) | |||
| G magnitude | 20.21 (0.007) | 20.21 (0.007) | ||
| BP magnitude | 20.18 (0.1) | |||
| RP magnitude | 20.18 (0.2) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.034 | |||
* 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.