SDSS J165918.69+184653.8

All names: GALEX J165918.7+184653, Gaia DR2 4561063888908633344, SDSS J165918.69+184653.8, Gaia EDR3 4561063888908633344, Gaia DR3 4561063888908633344, SDSS J165918.70+184653.8, WD 1657+188

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 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 59 18.70 (0.3) 16 59 18.70 16 59 18.70 (0.4) 16 59 18.70 (0.3) 16 59 18.70 16 59 18.84 16 59 18.70
Declination 18 46 53.67 (0.3) 18 46 53.88 18 46 53.68 (0.4) 18 46 53.89 (0.3) 18 46 53.84 18 46 51.24 18 46 53.84
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 15914.0 19960.0 (949) 19897.0 (982)
log(g) [cgs] 7.67 7.68 (0.2) 7.55 (0.2)
Mass [M☉] 0.448 0.453 (0.08)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.0947
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] 0.92 (0.4) 1.49 (0.5) 0.92 (0.4)
Distance [pc] 1082.84 (495) 672.01 (246) 1082.84 (495)
Composition H
Proper motion (right ascension) [mas/yr] -0.551702494 (0.3) -0.537149591 (0.7) -0.552 (0.3) 3.2
Proper motion (declination) [mas/yr] -13.84096618 (0.4) -13.94834229 (0.7) -13.841 (0.4) -14.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.11 (0.04) 20.11 (0.04) 20.12 (0.06) 20.11 20.12 (0.06)
g magnitude 19.96 (0.02) 19.96 (0.02) 20.00 (0.02) 19.99 20.00 (0.02)
r magnitude 20.26 (0.03) 20.26 (0.03) 20.23 (0.03) 20.22 20.24 (0.03)
i magnitude 20.50 (0.05) 20.50 (0.05) 20.59 (0.05) 20.58 20.59 (0.05)
z magnitude 20.61 (0.2) 20.61 (0.2) 20.67 (0.2) 20.66 20.68 (0.2)
G magnitude 20.15 (0.05) 20.21 20.15 (0.005)
BP magnitude 20.13 (0.05) 20.10
RP magnitude 20.22 (0.07) 20.17
Pan g magnitude 20.02 (0.02)
Pan r magnitude 20.29 (0.02)
Pan i magnitude 20.52 (0.02)
Pan z magnitude 20.69 (0.08)
Pan y magnitude
E(B-V) 0.056

* 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.