All names: 2MASS J01253335-2753047, HE 0123-2808, Gaia DR2 5036213028485154816, Gaia DR3 5036213028485154816, GD 1454, GALEX J012533.3-275304, MCT 0123-2808, EC 01232-2808, Ton S 214, MCT0123-2808, UCAC4 311-001406, TIC 11647020
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 01 25 33.34 | 01 25 33.36 (0.04) | ||
| Declination | -27 53 04.70 | -27 53 04.72 (0.03) | ||
| Spectral type | sdB | sdBHe1 | ||
| 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] | 0.27 (0.07) | 0.35 (0.05) | |
| Distance | [pc] | 3724.39 (932) | 2896.87 (414) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.913 (0.2) | -0.305 (0.07) | |
| Proper motion (declination) | [mas/yr] | -2.608 (0.1) | -2.445 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.88 (0.06) | |||
| V magnitude | 16.15 (0.01) | |||
| R magnitude | 16.03 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.20 (0.09) | 16.20 (0.09) | ||
| H magnitude | 16.07 (0.2) | 16.07 (0.2) | ||
| K magnitude | 17.04 | |||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.05 (0.001) | 16.03 (0.003) | ||
| BP magnitude | 15.85 (0.006) | |||
| RP magnitude | 16.21 (0.004) | |||
| Pan g magnitude | 15.87 (0.0007) | |||
| Pan r magnitude | 16.29 (0.001) | |||
| Pan i magnitude | 16.55 (0.004) | |||
| Pan z magnitude | 16.75 (0.004) | |||
| Pan y magnitude | 16.90 (0.01) | |||
| E(B-V) | 0.008 | |||
* 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.