SDSS J165048.37+184513.5

All names: Gaia EDR3 4559832225428308096, Gaia DR2 4559832225428308096, SDSS J165048.37+184513.6, WD 1648+188, Gaia DR3 4559832225428308096, SDSS J165048.37+184513.5, GALEX J165048.4+184514

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 50 48.37 (0.1) 16 50 48.37 16 50 48.37 (0.2) 16 50 48.37 (0.1) 16 50 48.37 16 50 48.10 16 50 48.37
Declination 18 45 13.46 (0.1) 18 45 13.60 18 45 13.46 (0.2) 18 45 13.56 (0.1) 18 45 13.56 18 45 09.36 18 45 13.56
Spectral type DAO DA DA DA DA DAOH: DA
Effective temperature [K] 47817.0 (1806) 19718.0 52120.0 (3234) 53109.0 (3582)
log(g) [cgs] 7.57 (0.1) 6.32 8.30 (0.2) 8.18 (0.2)
Mass [M] 0.5 (0.05) 0.159
log(Luminosity) [L] 0.25 (0.1)
Cooling age [Gyr] 0.0013 (0.0008)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 0.99 (0.2) 0.61 (0.3) 0.99 (0.2)
Distance [pc] 1008.88 (236) 1648.39 (822) 1008.88 (236)
Composition H H
Proper motion (right ascension) [mas/yr] -2.137045573 (0.2) -2.392672284 (0.4) -2.137 (0.2) 0.3
Proper motion (declination) [mas/yr] -6.104390884 (0.2) -5.826486373 (0.4) -6.104 (0.2) -3.9
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.59 (0.02) 18.59 (0.02) 18.58 (0.02) 18.58 18.58 (0.02)
g magnitude 18.94 (0.009) 18.94 (0.009) 18.92 (0.01) 18.92 18.94 (0.01)
r magnitude 19.40 (0.01) 19.40 (0.01) 19.37 (0.02) 19.37 19.37 (0.02)
i magnitude 19.74 (0.02) 19.74 (0.02) 19.73 (0.03) 19.73 19.74 (0.02)
z magnitude 20.10 (0.1) 20.10 (0.1) 20.17 (0.1) 20.17 20.19 (0.1)
G magnitude 19.15 (0.02) 19.20 19.15 (0.003)
BP magnitude 19.03 (0.02) 18.97
RP magnitude 19.47 (0.04) 19.38
Pan g magnitude 18.99 (0.01)
Pan r magnitude 19.41 (0.007)
Pan i magnitude 19.70 (0.01)
Pan z magnitude 20.07 (0.03)
Pan y magnitude 19.96 (0.04)
E(B-V) 0.058

* 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.