All names: Gaia DR2 4064576900870065792, 2MASS J18094822-2641494, Gaia DR3 4064576900870065792, UCAC4 317-142498, OGLEBUL-SC16335, OGLE BUL-SC16 335, TIC 249046812
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 09 48.23 | 18 09 48.23 (0.04) | ||
| Declination | -26 41 49.50 | -26 41 49.49 (0.03) | ||
| Spectral type | sdB+dM | M | ||
| Effective temperature | [K] | 31500.0 (1800) | ||
| log(g) | [cgs] | 5.70 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.24 (0.06) | 0.12 (0.04) | |
| Distance | [pc] | 4185.85 (1113) | 8123.48 (2725) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.167 (0.09) | -2.15 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.163 (0.08) | -3.252 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 16.04 (0.1) | |||
| I magnitude | ||||
| J magnitude | 12.87 (0.02) | 12.87 (0.02) | ||
| H magnitude | 12.07 (0.02) | 12.07 (0.02) | ||
| K magnitude | 11.85 (0.02) | 11.85 (0.02) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.56 (0.0009) | 15.54 (0.003) | ||
| BP magnitude | 16.57 (0.01) | |||
| RP magnitude | 14.47 (0.004) | |||
| Pan g magnitude | 17.17 (0.007) | |||
| Pan r magnitude | 15.73 (0.01) | |||
| Pan i magnitude | 15.05 (0.009) | |||
| Pan z magnitude | 14.58 (0.005) | |||
| Pan y magnitude | 14.29 (0.003) | |||
| E(B-V) | 0.478 | |||
* 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.