All names: TIC 290237162, Gaia DR2 6693254326596860288, BPS CS 22885-0043, EC 20149-3843, Gaia DR3 6693254326596860288, EC20149-3843, GALEX J201815.3-383359, 2MASS J20181537-3834002, Gaia EDR3 6693254326596860288
Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|---|
Right ascension | 20 18 15.37 (0.05) | 20 18 15.30 | 20 18 15.37 (0.05) | ||
Declination | -38 33 59.82 (0.04) | -38 33 59.26 | -38 33 59.79 (0.04) | ||
Spectral type | He-sdO+F | sdBHe | |||
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] | 0.44 (0.06) | 0.33 (0.09) | 0.44 (0.06) | |
Distance | [pc] | 2288.85 (300) | 3021.15 (779) | 2288.85 (300) | |
Composition | |||||
Proper motion (right ascension) | [mas/yr] | -0.303 (0.06) | -0.412 (0.1) | -0.303 (0.06) | |
Proper motion (declination) | [mas/yr] | -2.105 (0.04) | -2.019 (0.08) | -2.105 (0.04) | |
Variability | |||||
Magnetic | |||||
Bd | [MG] | ||||
Infrared excess (disk) | |||||
Binarity | |||||
B magnitude | |||||
V magnitude | 15.70 | ||||
R magnitude | |||||
I magnitude | |||||
J magnitude | 16.39 (0.1) | 16.39 (0.1) | |||
H magnitude | 16.37 | ||||
K magnitude | 17.07 | ||||
u magnitude | |||||
g magnitude | |||||
r magnitude | |||||
i magnitude | |||||
z magnitude | |||||
G magnitude | 15.78 (0.003) | 15.80 (0.001) | 15.78 (0.003) | ||
BP magnitude | 15.64 (0.004) | 15.53 (0.01) | |||
RP magnitude | 16.07 (0.007) | 16.06 (0.004) | |||
Pan g magnitude | |||||
Pan r magnitude | |||||
Pan i magnitude | |||||
Pan z magnitude | |||||
Pan y magnitude | |||||
E(B-V) | 0.040 |
* 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.