GD 518

All names: USNO-B1.0 1561-00163011, Gaia EDR3 1635687790163070976, LSPM J1659+6610, EGGR 544, LP 70-78, Gaia DR3 1635687790163070976, WDJ165915.38+661032.66, WD 1659+662, Gaia DR2 1635687790163070976, SDSS J165915.38+661032.7, J1659+6610, 1659+662, SDSS J165915.37+661032.7, NLTT 44028, GD 518

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Jewett et al. 2024 Kilic et al. 2020 Leggett et al. 2018 Gaia DR2 Stilism Hermes et al. 2013 Gianninas et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 59 15.10 (0.06) 16 59 15.11 (0.07) 16 59 15.10 16 59 15.38 (0.06) 16 59 15.11 16 59 16.54
Declination 66 10 35.26 (0.05) 66 10 35.18 (0.08) 66 10 35.26 66 10 32.66 (0.05) 66 10 35.18 66 10 25.32
Spectral type DA DA DA DA4.5 DA DA DA4.2 DA
Effective temperature [K] 11422.0 (106) 11422.0 (106) 11422.0 (106) 11298.0 (542) 11760.0 12030.0 (214) 11712.0 (172)
log(g) [cgs] 8.83 (0.01) 8.83 8.83 (0.01) 8.81 (0.06) 8.97 9.08 (0.06) 8.86 (0.01)
Mass [M] 1.114 (0.006) 1.114 (0.006) 1.114 (0.006) 1.106 (0.04) 1.23 (0.02) 1.13 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 1.9400 (0.05) 1.7880 (0.2)
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] 15.48 (0.06) 15.43 (0.6) 15.48 (0.08) 15.48 15.48 (0.06) 15.48 (0.08)
Distance [pc] 64.60 (0.2) 64.81 (2) 64.58 (0.3) 38.00 64.60 64.60 (0.2) 64.58 (0.3)
Composition H H H
Proper motion (right ascension) [mas/yr] -104.143642 (0.08) -103.9467841 (0.2) -104.144 (0.08) -103.9467841
Proper motion (declination) [mas/yr] 162.9355778 (0.08) 162.7937886 (0.2) 162.936 (0.08) 162.7937886
Variability VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.50
V magnitude 16.50
R magnitude 17.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.48 (0.009) 17.48 (0.009)
g magnitude 17.22 (0.004) 17.22 (0.004)
r magnitude 17.34 (0.005) 17.34 (0.005)
i magnitude 17.52 (0.007) 17.52 (0.007)
z magnitude 17.78 (0.02) 17.78 (0.02)
G magnitude 17.24 (0.005) 17.27 17.24 17.24 (0.003) 17.27
BP magnitude 17.27 (0.005) 17.26 17.26
RP magnitude 17.25 (0.008) 17.24 17.24
Pan g magnitude 17.22 (0.006)
Pan r magnitude 17.35 (0.005)
Pan i magnitude 17.53 (0.005)
Pan z magnitude 17.74 (0.009)
Pan y magnitude 17.84 (0.004)
E(B-V) 0.009
Period #1 [s] 440.2
Amplitude #1 [mma]
Period #2 [s] 513.2
Amplitude #2 [mma]
Period #3 [s] 583.7
Amplitude #3 [mma]
Period #4 [s] 0.8
Amplitude #4 [mma]

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.