EC 20271-4318

All names: Gaia DR3 6679419343582194688, 2MASS J20303295-4308486, Gaia DR2 6679419343582194688, GALEX J203032.8-430848, EC 20271-4318, EC20271-4318, TIC 90849797, Gaia EDR3 6679419343582194688

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 20 30 32.95 (0.04) 20 30 32.91 20 30 32.95 (0.04)
Declination -43 08 48.76 (0.03) -43 08 47.72 -43 08 48.66 (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] 0.36 (0.06) 0.41 (0.08) 0.36 (0.06)
Distance [pc] 2740.48 (442) 2450.38 (485) 2740.48 (442)
Composition
Proper motion (right ascension) [mas/yr] -1.539 (0.05) -1.62 (0.1) -1.539 (0.05)
Proper motion (declination) [mas/yr] -5.957 (0.05) -5.878 (0.09) -5.957 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.17
V magnitude 16.46
R magnitude
I magnitude
J magnitude 16.73 (0.1) 16.73 (0.1)
H magnitude 17.12
K magnitude 17.15
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.37 (0.003) 16.39 (0.001) 16.37 (0.003)
BP magnitude 16.24 (0.004) 16.18 (0.007)
RP magnitude 16.61 (0.006) 16.61 (0.007)
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.