All names: Gaia DR3 4642302336315769728, GALEX J031733.4-723345, EC 03177-7244, [DI91] 1450, EC03177-7244, 2MASS J03173356-7233467, UCAC4 088-006939, Gaia DR2 4642302336315769728, TIC 431480470
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 03 17 33.48 | 03 17 33.57 (0.03) | |
| Declination | -72 33 45.58 | -72 33 46.78 (0.02) | |
| Spectral type | sdB | sdB/B4 | |
| 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] | -0.02 (0.03) | 0.02 (0.03) |
| Distance | [pc] | 62893.08 (100471) | |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 1.489 (0.06) | 1.454 (0.03) |
| Proper motion (declination) | [mas/yr] | -0.725 (0.06) | -0.802 (0.03) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 15.90 (0.06) | ||
| V magnitude | 16.01 (0.02) | ||
| R magnitude | 15.99 (0.5) | ||
| I magnitude | |||
| J magnitude | 16.52 (0.1) | 16.52 (0.1) | |
| H magnitude | 15.92 | ||
| K magnitude | 15.57 | ||
| u magnitude | |||
| g magnitude | 15.81 (0.04) | ||
| r magnitude | 16.14 (0.03) | ||
| i magnitude | 16.18 (0.01) | ||
| z magnitude | |||
| G magnitude | 15.69 (0.009) | 15.74 (0.009) | |
| BP magnitude | 15.59 (0.03) | ||
| RP magnitude | 15.70 (0.04) | ||
| 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.