All names: 2MASS J00230348+2419081, UCAC2 40288137, LAMOST J002303.50+241909.2, GALEX J002303.5+241909, UCAC4 572-000899, PG 0020+240, Gaia DR2 2801217974425183104, TIC 437759507, SDSS J002303.49+241908.2, Gaia DR3 2801217974425183104, PG0020+240
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 23 03.46 | 00 23 03.49 (0.04) | ||
| Declination | 24 19 08.72 | 24 19 08.31 (0.03) | ||
| Spectral type | sdB | sdOB+K2V | ||
| 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] | 0.49 (0.07) | 0.44 (0.05) | |
| Distance | [pc] | 2056.77 (317) | 2262.44 (231) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 8.396 (0.1) | 8.275 (0.06) | |
| Proper motion (declination) | [mas/yr] | -6.722 (0.09) | -6.677 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.55 (0.05) | |||
| V magnitude | 15.56 (0.05) | |||
| R magnitude | 15.79 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.14 (0.04) | 15.14 (0.04) | ||
| H magnitude | 14.77 (0.06) | 14.77 (0.06) | ||
| K magnitude | 14.69 (0.1) | 14.69 (0.1) | ||
| u magnitude | 15.31 (0.004) | 15.31 (0.004) | ||
| g magnitude | 15.40 (0.003) | 15.40 (0.003) | ||
| r magnitude | 15.59 (0.003) | 15.59 (0.003) | ||
| i magnitude | 15.66 (0.004) | 15.66 (0.004) | ||
| z magnitude | 15.72 (0.006) | 15.72 (0.006) | ||
| G magnitude | 15.46 (0.0007) | 15.44 (0.003) | ||
| BP magnitude | 15.45 (0.005) | |||
| RP magnitude | 15.34 (0.004) | |||
| Pan g magnitude | 15.47 (0.007) | |||
| Pan r magnitude | 15.59 (0.004) | |||
| Pan i magnitude | 15.70 (0.01) | |||
| Pan z magnitude | 15.76 (0.004) | |||
| Pan y magnitude | 15.78 (0.009) | |||
| E(B-V) | 0.056 | |||
* 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.