EC 20582-6421

All names: GALEX J210227.6-640949, 2MASS J21022769-6409494, Gaia EDR3 6449626704778333440, Gaia DR3 6449638730686535168, EC20582-6421, EC 20582-6421, Gaia DR2 6449638730686535168

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 21 02 38.56 (0.4) 21 02 27.66 21 02 27.70 (0.02)
Declination -64 11 18.32 (0.5) -64 09 49.00 -64 09 49.41 (0.03)
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] 2.13 (0.8) 0.48 (0.07) 0.25 (0.05)
Distance [pc] 470.04 (175) 2079.43 (301) 4051.86 (765)
Composition
Proper motion (right ascension) [mas/yr] 6.97 (0.5) 7.554 (0.07) 7.928 (0.03)
Proper motion (declination) [mas/yr] -9.582 (0.6) -5.526 (0.09) -5.68 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.45
V magnitude 16.55
R magnitude
I magnitude
J magnitude 16.07 (0.08) 16.07 (0.08)
H magnitude 15.95 (0.2) 15.95 (0.2)
K magnitude 15.55 (0.2) 15.55 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 20.55 (0.006) 16.48 (0.001) 16.45 (0.003)
BP magnitude 20.71 (0.08) 16.40 (0.004)
RP magnitude 19.74 (0.07) 16.46 (0.003)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.025

* Constant surface field

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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.