All names: Gaia DR2 5183596338780047360, KUV 03062-0309, HE0306-0309, 2MASS J03084072-0258032, Gaia DR3 5183596338780047360, HE 0306-0309, Gaia EDR3 5183596338780047360, GALEX J030840.7-025803, TIC 49798709, PHL 1472
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 03 08 40.75 (0.09) | 03 08 40.80 | 03 08 40.75 (0.09) | ||
| Declination | -02 58 03.22 (0.07) | -02 58 02.79 | -02 58 03.15 (0.07) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 26710.0 (500) | |||
| log(g) | [cgs] | 5.79 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.63 (0.09) | 0.57 (0.1) | 0.63 (0.09) | |
| Distance | [pc] | 1588.06 (238) | 1768.03 (362) | 1588.06 (238) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.775 (0.1) | 0.706 (0.2) | 0.775 (0.1) | |
| Proper motion (declination) | [mas/yr] | -4.407 (0.09) | -4.161 (0.1) | -4.407 (0.09) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.10 | ||||
| V magnitude | 16.80 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.84 (0.2) | 16.84 (0.2) | |||
| H magnitude | 16.06 | ||||
| K magnitude | 16.99 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.41 (0.003) | 16.45 (0.003) | 16.41 (0.003) | ||
| BP magnitude | 16.32 (0.005) | 16.27 (0.01) | |||
| RP magnitude | 16.65 (0.01) | 16.64 (0.007) | |||
| Pan g magnitude | 16.26 (0.01) | ||||
| Pan r magnitude | 16.63 (0.004) | ||||
| Pan i magnitude | 16.96 (0.004) | ||||
| Pan z magnitude | 17.21 (0.005) | ||||
| Pan y magnitude | 17.34 (0.009) | ||||
| E(B-V) | 0.033 | ||||
* 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.