All names: PHL 1675, Gaia DR3 6830753164795913088, EC 21368-1901, Gaia DR2 6830753164795913088, TIC 441039137, UCAC4 356-199915, EC21368-1901, 2MASS J21393713-1848128
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 21 39 37.16 | 21 39 37.14 (0.04) | ||
Declination | -18 48 12.35 | -18 48 12.80 (0.04) | ||
Spectral type | sdB | 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] | 0.45 (0.08) | 0.50 (0.05) | |
Distance | [pc] | 2202.64 (402) | 2007.23 (185) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 0.079 (0.1) | 0.228 (0.05) | |
Proper motion (declination) | [mas/yr] | -11.533 (0.1) | -11.928 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 15.85 (0.04) | |||
V magnitude | 15.81 (0.01) | |||
R magnitude | 15.76 (0.1) | |||
I magnitude | ||||
J magnitude | 15.26 (0.04) | 15.26 (0.04) | ||
H magnitude | 14.85 (0.07) | 14.85 (0.07) | ||
K magnitude | 14.78 (0.08) | 14.78 (0.08) | ||
u magnitude | ||||
g magnitude | 15.72 (0.03) | |||
r magnitude | 15.93 (0.07) | |||
i magnitude | ||||
z magnitude | ||||
G magnitude | 15.72 (0.001) | 15.71 (0.003) | ||
BP magnitude | 15.69 (0.008) | |||
RP magnitude | 15.59 (0.008) | |||
Pan g magnitude | 15.72 (0.003) | |||
Pan r magnitude | 15.84 (0.002) | |||
Pan i magnitude | 15.94 (0.002) | |||
Pan z magnitude | 15.99 (0.005) | |||
Pan y magnitude | 16.00 (0.006) | |||
E(B-V) | 0.025 |
* 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.