All names: UCAC4 371-063933, EC12546-1540, Gaia DR3 3524282212696623488, GALEX J125719.3-155622, EC 12546-1540, TIC 2491304, WISEA J125719.35-155622.8, UCAC2 25998780, Gaia DR2 3524282212696623488, WISE J125719.36-155622.6, HE 1254-1540, 2MASS J12571934-1556227
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 57 19.36 | 12 57 19.35 (0.05) | ||
| Declination | -15 56 22.80 | -15 56 22.67 (0.04) | ||
| Spectral type | sdB | sdB+G0 | ||
| Effective temperature | [K] | 29700.0 (500) | ||
| log(g) | [cgs] | 5.63 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.98 (0.08) | 0.77 (0.06) | |
| Distance | [pc] | 1021.45 (88) | 1302.59 (106) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -8.414 (0.2) | -8.213 (0.08) | |
| Proper motion (declination) | [mas/yr] | -11.338 (0.1) | -11.044 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.47 (0.05) | |||
| V magnitude | 15.62 (0.07) | |||
| R magnitude | 15.81 (0.2) | |||
| I magnitude | ||||
| J magnitude | 15.56 (0.07) | 15.56 (0.07) | ||
| H magnitude | 15.38 (0.1) | 15.38 (0.1) | ||
| K magnitude | 15.06 (0.1) | 15.06 (0.1) | ||
| u magnitude | ||||
| g magnitude | 15.42 (0.03) | |||
| r magnitude | 15.75 (0.05) | |||
| i magnitude | 16.12 (0.09) | |||
| z magnitude | ||||
| G magnitude | 15.54 (0.0009) | 15.52 (0.003) | ||
| BP magnitude | 15.39 (0.01) | |||
| RP magnitude | 15.65 (0.003) | |||
| Pan g magnitude | 15.39 (0.002) | |||
| Pan r magnitude | 15.74 (0.002) | |||
| Pan i magnitude | 15.99 (0.001) | |||
| Pan z magnitude | 16.15 (0.004) | |||
| Pan y magnitude | 16.23 (0.006) | |||
| E(B-V) | 0.027 | |||
* 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.