GALEX J185753.9+304822

All names: 2MASS J18575385+3048211, UCAC4 605-067996, Gaia DR2 2041883531914920064, WISEA J185753.85+304821.0, TIC 20688004, UCAC2 42612612, WISE J185753.85+304821.1, GALEXJ18578+3048, GALEX J185753.9+304822, Gaia DR3 2041883531914920064

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 18 57 53.92 18 57 53.85 (0.01)
Declination 30 48 22.66 30 48 21.06 (0.02)
Spectral type He-sdO sdOHe
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] 0.57 (0.03) 0.54 (0.02)
Distance [pc] 1758.71 (89) 1847.40 (68)
Composition
Proper motion (right ascension) [mas/yr] 3.661 (0.04) 3.682 (0.02)
Proper motion (declination) [mas/yr] -6.213 (0.05) -6.211 (0.02)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude 13.97 (0.1)
I magnitude
J magnitude 14.01 (0.03) 14.01 (0.03)
H magnitude 14.10 (0.04) 14.10 (0.04)
K magnitude 14.12 (0.07) 14.12 (0.07)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 13.73 (0.0005) 13.72 (0.003)
BP magnitude 13.61 (0.006)
RP magnitude 13.80 (0.001)
Pan g magnitude 13.66 (0.0006)
Pan r magnitude 13.90 (0.003)
Pan i magnitude 14.16 (0.005)
Pan z magnitude 14.33 (0.004)
Pan y magnitude 14.48 (0.002)
E(B-V) 0.118

* 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.