WD 1515+668

All names: J1515+6642, Gaia DR2 1645204475617697536, WD 1515+668, GALEX J151552.9+664243, 2MASS J15155289+6642427, WDJ151552.91+664242.88, TIC 230059745, SDSS J151552.92+664243.4, Gaia EDR3 1645204475617697536, PG 1515+669, CHSS 2744, Gaia DR3 1645204475617697536

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 Kilic et al. 2020 McCleery et al. 2020 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 15 15 52.96 (0.02) 15 15 52.96 (0.03) 15 15 52.96 (0.03) 15 15 52.96 15 15 52.91 (0.02) 15 15 52.96 15 15 52.32
Declination 66 42 44.42 (0.02) 66 42 44.37 (0.03) 66 42 44.37 (0.03) 66 42 44.42 66 42 42.88 (0.02) 66 42 44.37 66 42 37.44
Spectral type DA DA DA DA DA DA DA DA DA4.8 DA5
Effective temperature [K] 10099.0 (52) 10298.0 (110) 9983.0 (46) 10099.0 (52) 10220.6 (88) 10041.0 10410.0 (157) 9954.0 (58)
log(g) [cgs] 8.24 (0.006) 8.27 (0.02) 8.22 (0.006) 8.25 (0.007) 8.27 (0.02) 8.24 8.48 (0.06) 8.23 (0.009)
Mass [M] 0.753 (0.006) 0.771 (0.01) 0.74 (0.006) 0.755 (0.006) 0.749 0.91 (0.04) 0.74 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.8800 0.8495
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] 26.16 (0.02) 26.16 (0.02) 26.23 (0.03) 26.23 (0.03) 26.23 (0.03) 26.16 26.16 (0.02) 26.23 (0.03)
Distance [pc] 38.22 (0.03) 38.23 (0.03) 38.12 (0.04) 38.13 (0.04) 38.13 (0.04) 32.00 38.22 38.22 (0.03) 38.13 (0.04)
Composition H H H H H
Proper motion (right ascension) [mas/yr] 19.38712684 (0.03) 19.32683352 (0.05) 19.387 (0.03) 19.32683352
Proper motion (declination) [mas/yr] 96.31128011 (0.03) 96.18579615 (0.05) 96.311 (0.03) 96.18579615
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.59
V magnitude
R magnitude
I magnitude
J magnitude 15.29 (0.05) 15.29 (0.05)
H magnitude 15.24 (0.1) 15.24 (0.1)
K magnitude 15.18 (0.2) 15.18 (0.2)
u magnitude 15.81 (0.005) 15.80 (0.005) 15.80 (0.005)
g magnitude 15.42 (0.003) 15.42 (0.003)
r magnitude 15.50 (0.004) 15.50 (0.004)
i magnitude 15.63 (0.004) 15.63 (0.004)
z magnitude 15.82 (0.007) 15.82 (0.007)
G magnitude 15.42 (0.002) 15.44 15.44 15.42 15.42 (0.003) 15.44
BP magnitude 15.47 (0.002) 15.46 15.46
RP magnitude 15.34 (0.002) 15.35 15.35
Pan g magnitude 15.43 (0.004) 15.43 (0.004)
Pan r magnitude 15.51 (0.002) 15.51 (0.003)
Pan i magnitude 15.65 (0.004) 15.65 (0.004)
Pan z magnitude 15.81 (0.003) 15.81 (0.003)
Pan y magnitude 15.94 (0.007) 15.94 (0.007)
E(B-V) 0.005

* 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.