GALEX J182054.6+331846

All names: Gaia DR2 4593184093889740672, GALEX J182054.6+331846, TIC 23386616, 2MASS J18205472+3318465, LAMOST J182054.72+331846.5, Gaia EDR3 4593184093889740672, O11J182055+331847, Gaia DR3 4593184093889740672, GALEX J182054.7+331846

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 18 20 54.72 (0.04) 18 20 55.00 18 20 54.72 (0.04)
Declination 33 18 46.60 (0.05) 33 18 47.00 33 18 46.61 (0.05)
Spectral type sd sdB/sdO
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 (0.06) 0.41 (0.07) 0.39 (0.06)
Distance [pc] 2545.18 (363) 2453.39 (436) 2545.18 (363)
Composition
Proper motion (right ascension) [mas/yr] 0.88 (0.06) 0.741 (0.1) 0.88 (0.06)
Proper motion (declination) [mas/yr] -0.94 (0.06) -0.827 (0.1) -0.94 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.03 (0.1) 17.03 (0.1)
H magnitude 16.63
K magnitude 17.47
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.03 (0.003) 17.06 (0.002) 17.03 (0.003)
BP magnitude 16.91 (0.006) 16.86 (0.008)
RP magnitude 17.26 (0.01) 17.27 (0.01)
Pan g magnitude 16.86 (0.003)
Pan r magnitude 17.27 (0.004)
Pan i magnitude 17.61 (0.003)
Pan z magnitude 17.85 (0.009)
Pan y magnitude 18.02 (0.02)
E(B-V) 0.051

* 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.