All names: Gaia DR3 2117140292468079872, GALEX J183819.1+435737, FBS 1836+439, TIC 123098205, FBS B 397, FBS1836+439, Gaia DR2 2117140292468079872, 2MASS J18381919+4357368
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 38 19.18 | 18 38 19.19 (0.02) | ||
| Declination | 43 57 37.30 | 43 57 36.90 (0.02) | ||
| Spectral type | sd | 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] | 0.11 (0.03) | 0.17 (0.02) | |
| Distance | [pc] | 8865.25 (2444) | 6020.47 (591) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.451 (0.05) | -3.518 (0.02) | |
| Proper motion (declination) | [mas/yr] | -8.677 (0.05) | -8.571 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.77 | |||
| V magnitude | 14.11 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.39 (0.03) | 14.39 (0.03) | ||
| H magnitude | 14.32 (0.05) | 14.32 (0.05) | ||
| K magnitude | 14.53 (0.08) | 14.53 (0.08) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.49 (0.0003) | 14.47 (0.003) | ||
| BP magnitude | 14.49 (0.003) | |||
| RP magnitude | 14.43 (0.002) | |||
| Pan g magnitude | 14.43 (0.007) | |||
| Pan r magnitude | 14.60 (0.001) | |||
| Pan i magnitude | 14.80 (0.002) | |||
| Pan z magnitude | 14.90 (0.005) | |||
| Pan y magnitude | 14.92 (0.005) | |||
| E(B-V) | 0.035 | |||
* 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.