MCT 2030-4241

All names: GALEX J203355.0-423106, TIC 90955418, EC 20305-4241, Gaia EDR3 6679452500729968640, MCT 2030-4241, EC20305-4241, Gaia DR2 6679452500729968640, Gaia DR3 6679452500729968640, 2MASS J20335518-4231068

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 20 33 55.17 (0.04) 20 33 55.27 20 33 55.18 (0.04)
Declination -42 31 06.84 (0.03) -42 31 07.00 -42 31 06.73 (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] 0.39 (0.05) 0.47 (0.08) 0.39 (0.05)
Distance [pc] 2564.10 (348) 2146.38 (348) 2564.10 (348)
Composition
Proper motion (right ascension) [mas/yr] -8.063 (0.06) -8.222 (0.1) -8.063 (0.06)
Proper motion (declination) [mas/yr] -6.521 (0.05) -6.553 (0.09) -6.521 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.88
V magnitude 16.16
R magnitude
I magnitude
J magnitude 16.52 (0.1) 16.52 (0.1)
H magnitude 16.16
K magnitude 15.09
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.05 (0.003) 16.08 (0.002) 16.05 (0.003)
BP magnitude 15.89 (0.004) 15.80 (0.009)
RP magnitude 16.39 (0.006) 16.38 (0.005)
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.