All names: EC04280-1714, TIC 71150825, Gaia DR3 3171090975885713920, WISE J043018.18-170740.9, EC 04280-1714, UCAC4 365-005684, 2MASS J04301817-1707411, Gaia DR2 3171090975885713920
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 30 18.18 | 04 30 18.18 (0.02) | ||
| Declination | -17 07 41.05 | -17 07 41.07 (0.01) | ||
| Spectral type | sdB+F | sdB+F | ||
| 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] | 0.63 (0.03) | 0.65 (0.02) | |
| Distance | [pc] | 1575.30 (81) | 1547.75 (56) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.828 (0.04) | 5.056 (0.02) | |
| Proper motion (declination) | [mas/yr] | -4.257 (0.04) | -4.301 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.75 | |||
| V magnitude | 14.69 | |||
| R magnitude | 14.80 (0.08) | |||
| I magnitude | ||||
| J magnitude | 14.19 (0.03) | 14.19 (0.03) | ||
| H magnitude | 13.94 (0.04) | 13.94 (0.04) | ||
| K magnitude | 13.83 (0.06) | 13.83 (0.06) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.61 (0.0004) | 14.58 (0.003) | ||
| BP magnitude | 14.62 (0.006) | |||
| RP magnitude | 14.43 (0.002) | |||
| Pan g magnitude | 14.64 (0.004) | |||
| Pan r magnitude | 14.71 (0.007) | |||
| Pan i magnitude | 14.78 (0.0008) | |||
| Pan z magnitude | 14.84 (0.005) | |||
| Pan y magnitude | 14.87 (0.003) | |||
| E(B-V) | 0.035 | |||
* 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.