All names: Gaia DR2 4610305860754573184, FBS 1801+384, 2MASS J18025443+3822375, FBS1801+384, TIC 75627786, FBS B 166, Gaia DR3 4610305860754573184, GALEX J180254.4+382237
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 18 02 54.46 | 18 02 54.42 (0.03) | ||
| Declination | 38 22 37.59 | 38 22 37.44 (0.03) | ||
| Spectral type | sd | |||
| 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] | 0.06 (0.04) | 0.06 (0.03) | |
| Distance | [pc] | 15948.96 (9895) | 16977.93 (8475) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.568 (0.07) | -1.693 (0.03) | |
| Proper motion (declination) | [mas/yr] | 0.108 (0.09) | 0.127 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.77 (0.06) | 15.77 (0.06) | ||
| H magnitude | 15.68 (0.1) | 15.68 (0.1) | ||
| K magnitude | 15.46 (0.2) | 15.46 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 16.06 (0.0006) | 16.04 (0.003) | ||
| BP magnitude | 16.10 (0.004) | |||
| RP magnitude | 15.94 (0.004) | |||
| Pan g magnitude | 16.02 (0.003) | |||
| Pan r magnitude | 16.15 (0.0008) | |||
| Pan i magnitude | 16.30 (0.002) | |||
| Pan z magnitude | 16.38 (0.003) | |||
| Pan y magnitude | 16.38 (0.003) | |||
| E(B-V) | 0.034 | |||
* 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.