All names: SDSS J012307.94+302804.6, Gaia EDR3 309553175085269760, Gaia DR2 309553175085269760, Gaia DR3 309553175085269760, SDSS J012324.11+450625.4, GALEX J012307.9+302805
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 01 23 07.96 (0.4) | 01 23 07.95 (0.4) | ||
| Declination | 30 28 04.76 (0.4) | 30 28 04.74 (0.4) | ||
| Spectral type | DC | |||
| 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] | 2.95 (0.5) | 2.95 (0.5) | |
| Distance | [pc] | 338.43 (59) | 338.43 (59) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 15.502 (0.5) | 15.502 (0.5) | |
| Proper motion (declination) | [mas/yr] | 1.288 (0.5) | 1.288 (0.5) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 20.17 (0.04) | |||
| g magnitude | 20.10 (0.02) | |||
| r magnitude | 20.10 (0.02) | |||
| i magnitude | 20.23 (0.03) | |||
| z magnitude | 20.28 (0.1) | |||
| G magnitude | 20.06 (0.006) | 20.06 (0.006) | ||
| BP magnitude | 20.14 (0.06) | |||
| RP magnitude | 19.99 (0.08) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.045 | |||
* 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.