All names: Gaia DR2 6778193523988117120, TIC 389520459, EC 20485-3648, BPS CS 30314-0078, UCAC4 267-187063, GALEX J205145.7-363654, Gaia DR3 6778193523988117120, EC20485-3648, 2MASS J20514564-3636548
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 20 51 45.59 | 20 51 45.64 (0.02) | ||
Declination | -36 36 54.18 | -36 36 54.91 (0.01) | ||
Spectral type | sdB+MS | 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] | 0.49 (0.04) | 0.58 (0.02) | |
Distance | [pc] | 2056.34 (176) | 1725.33 (67) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 6.591 (0.06) | 6.464 (0.02) | |
Proper motion (declination) | [mas/yr] | -13.215 (0.04) | -13.264 (0.02) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 14.30 (0.02) | |||
V magnitude | 14.06 (0.03) | |||
R magnitude | 14.16 (0.1) | |||
I magnitude | ||||
J magnitude | 13.44 (0.03) | 13.44 (0.03) | ||
H magnitude | 13.22 (0.03) | 13.22 (0.03) | ||
K magnitude | 13.21 (0.04) | 13.21 (0.04) | ||
u magnitude | ||||
g magnitude | 14.13 (0.01) | |||
r magnitude | 14.08 (0.05) | |||
i magnitude | 14.11 (0.02) | |||
z magnitude | ||||
G magnitude | 14.03 (0.0003) | 14.02 (0.003) | ||
BP magnitude | 14.13 (0.003) | |||
RP magnitude | 13.78 (0.001) | |||
Pan g magnitude | ||||
Pan r magnitude | ||||
Pan i magnitude | ||||
Pan z magnitude | ||||
Pan y magnitude | ||||
E(B-V) | 0.039 |
* 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.