All names: TIC 686310852, EC 04070-2530, GALEX J040907.5-252213, Gaia DR2 4890810999489081984, TIC 471015340, Gaia EDR3 4890810999489081984, Gaia DR3 4890810999489081984, EC04070-2530
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 04 09 07.62 (0.02) | 04 09 07.58 | 04 09 07.61 (0.02) | ||
| Declination | -25 22 14.92 (0.04) | -25 22 14.66 | -25 22 15.00 (0.04) | ||
| Spectral type | sdB | 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] | 0.74 (0.05) | 0.71 (0.06) | 0.74 (0.05) | |
| Distance | [pc] | 1343.54 (95) | 1405.88 (128) | 1343.54 (95) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.558 (0.03) | 9.642 (0.09) | 9.558 (0.03) | |
| Proper motion (declination) | [mas/yr] | 4.993 (0.05) | 4.868 (0.1) | 4.993 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.00 | ||||
| V magnitude | 16.29 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.25 (0.003) | 16.27 (0.001) | 16.25 (0.003) | ||
| BP magnitude | 16.10 (0.004) | 16.00 (0.007) | |||
| RP magnitude | 16.54 (0.005) | 16.52 (0.004) | |||
| Pan g magnitude | 16.07 (0.004) | ||||
| Pan r magnitude | 16.51 (0.003) | ||||
| Pan i magnitude | 16.87 (0.002) | ||||
| Pan z magnitude | 17.15 (0.003) | ||||
| Pan y magnitude | 17.33 (0.02) | ||||
| E(B-V) | 0.016 | ||||
* 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.