All names: Gaia DR2 4844181295470077952, TIC 404506131, EC 04052-3859, Gaia EDR3 4844181364189990528, 2MASS J04070284-3851458, GALEX J040702.7-385145, Gaia DR3 4844181295470077952, HE 0405-3839, HE0405-3859
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 04 06 55.96 (0.4) | 04 07 02.85 | 04 07 02.85 (0.02) | ||
| Declination | -38 52 49.78 (0.5) | -38 51 46.10 | -38 51 45.92 (0.03) | ||
| Spectral type | sdB | sdB | |||
| 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] | 0.88 (0.5) | 0.83 (0.03) | 0.83 (0.03) | |
| Distance | [pc] | 1136.36 (666) | 1207.88 (45) | 1198.75 (40) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 6.445 (0.6) | 4.379 (0.05) | 4.326 (0.03) | |
| Proper motion (declination) | [mas/yr] | -0.457 (0.7) | 3.372 (0.08) | 3.339 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.16 | ||||
| V magnitude | 14.40 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.03 (0.04) | 15.03 (0.04) | |||
| H magnitude | 15.21 (0.07) | 15.21 (0.07) | |||
| K magnitude | 15.15 (0.1) | 15.15 (0.1) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.43 (0.006) | 14.37 (0.0005) | 14.36 (0.003) | ||
| BP magnitude | 20.57 (0.1) | 14.15 (0.007) | |||
| RP magnitude | 19.92 (0.1) | 14.63 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.010 | ||||
* 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.