All names: Gaia DR3 4640657947957095808, GALEX J030834.2-732717, 2MASS J03083446-7327169, EC 03087-7338, EC03087-7338, TIC 280098635, IDK F001, UCAC2 1005206, Gaia DR2 4640657947957095808, [DI91] 1438, UCAC4 083-006809
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 03 08 34.36 | 03 08 34.42 (0.04) | |
| Declination | -73 27 17.35 | -73 27 17.24 (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] | -0.10 (0.05) | 0.00 (0.04) |
| Distance | [pc] | 909090.91 (30826446) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 2.046 (0.1) | 1.888 (0.04) |
| Proper motion (declination) | [mas/yr] | -0.933 (0.09) | -0.921 (0.04) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 15.55 (0.05) | ||
| V magnitude | 15.71 (0.1) | ||
| R magnitude | 15.88 (0.07) | ||
| I magnitude | |||
| J magnitude | 16.45 (0.1) | 16.45 (0.1) | |
| H magnitude | 16.31 (0.3) | 16.31 (0.3) | |
| K magnitude | 15.38 (0.2) | 15.38 (0.2) | |
| u magnitude | |||
| g magnitude | 15.50 (0.03) | ||
| r magnitude | 15.93 (0.04) | ||
| i magnitude | |||
| z magnitude | |||
| G magnitude | 15.72 (0.002) | 15.70 (0.003) | |
| BP magnitude | 15.57 (0.006) | ||
| RP magnitude | 15.92 (0.003) | ||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.