SDSS J151642.97-004042.7

All names: LAMOST J151642.96-004042.5, J1516-0040, SDSS J151642.97-004042.71, Gaia EDR3 4418628372344562048, SDSS J151642.96-004042.4, SDSS J151642.97-004042.7, Gaia DR2 4418628372344562048, Gaia DR3 4418628372344562048, GALEX J151643.0-004042

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Coutu et al. 2019 Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 15 16 42.97 (0.08) 15 16 42.96 15 16 42.97 15 16 42.97 (0.1) 15 16 42.97 15 16 42.97 (0.08)
Declination -00 40 42.85 (0.08) -00 40 42.49 -00 40 42.50 -00 40 42.84 (0.09) -00 40 42.85 -00 40 42.50 (0.08)
Spectral type DBZA DBAZ DB DBAZ DB
Effective temperature [K] 14788.0 13496.0 13006.0 (735) 14961.0 (28) 15264.0 (50) 12779.0 (346)
log(g) [cgs] 8.05 8.00 7.95 8.00 (0) 8.21 (0.003) 7.89 (0.04)
Mass [M] 0.617 0.589 0.5552 0.525 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.2820
log(H/He) -4.534 -4.8348 (0.08) -4.47 (0.1)
log(C/He)
log(Ca/He) -8.5936 (0.1) -7.38 (0.2)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 6.98 (0.1) 7.05 7.05 (0.1) 6.98 6.98 (0.1)
Distance [pc] 143.32 (2) 141.93 (2) 141.93 (2) 155.00 143.32 143.32 (2)
Composition He
Proper motion (right ascension) [mas/yr] 5.97555919 (0.1) 6.137063624 (0.2) 5.976 (0.1)
Proper motion (declination) [mas/yr] -21.57379544 (0.09) -21.68923841 (0.2) -21.574 (0.09)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.15 (0.008) 17.15 (0.01) 17.15 (0.008)
g magnitude 17.18 (0.005) 17.21 (0.02) 17.18 (0.005)
r magnitude 17.45 (0.006) 17.45 (0.01) 17.45 (0.006)
i magnitude 17.64 (0.007) 17.64 (0.01) 17.64 (0.007)
z magnitude 17.90 (0.02) 17.90 (0.02) 17.90 (0.02)
G magnitude 17.30 (0.009) 17.34 17.30 17.30 (0.003)
BP magnitude 17.28 (0.009) 17.26
RP magnitude 17.30 (0.02) 17.34
Pan g magnitude 17.24 (0.005)
Pan r magnitude 17.45 (0.005)
Pan i magnitude 17.66 (0.009)
Pan z magnitude 17.85 (0.007)
Pan y magnitude 18.00 (0.02)
E(B-V) 0.031

* 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.