SDSS J161643.67+171453.2

All names: SDSS J161643.67+171453.2, SDSS J161643.67+171453.1, Gaia EDR3 1198777431614139008, GALEX J161643.7+171453, Gaia DR2 1198777431614139008, Gaia DR3 1198777431614139008, SDSS J161643.66+171453.2, SDSS J161643.67+171453.20

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 16 43.69 (0.08) 16 16 43.67 16 16 43.69 (0.1) 16 16 43.69 16 16 43.66 (0.08) 16 16 43.67
Declination 17 14 52.42 (0.08) 17 14 53.11 17 14 52.45 (0.09) 17 14 52.42 17 14 53.47 (0.08) 17 14 53.21
Spectral type DBH: DB DBH DBH: DB
Effective temperature [K] 13156.0 12472.0 11690.0 13329.0 (39) 11941.0 (220) 14145.0 (103)
log(g) [cgs] 7.99 7.96 7.87 8.00 (0) 7.89 (0.03) 8.79 (0.06)
Mass [M] 0.583 0.563 0.508 0.522 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.3428
log(H/He) -6.217 -6.09 (1)
log(C/He)
log(Ca/He) <-9.54
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] 5.89 (0.1) 5.91 (0.1) 5.89 5.89 (0.1)
Distance [pc] 169.78 (3) 169.22 (4) 174.00 169.78 169.78 (3)
Composition He
Proper motion (right ascension) [mas/yr] 30.54473993 (0.09) 30.21804674 (0.2) 30.545 (0.09)
Proper motion (declination) [mas/yr] -65.71938826 (0.09) -66.20593754 (0.2) -65.719 (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 17.76 (0.01) 17.76 (0.01) 17.76 (0.02)
g magnitude 17.70 (0.005) 17.70 (0.005) 17.71 (0.01)
r magnitude 17.95 (0.007) 17.95 (0.007) 17.94 (0.01)
i magnitude 18.11 (0.008) 18.11 (0.008) 18.11 (0.01)
z magnitude 18.35 (0.02) 18.35 (0.03) 18.33 (0.03)
G magnitude 17.80 (0.008) 17.83 17.80 17.80 (0.003)
BP magnitude 17.81 (0.008) 17.77
RP magnitude 17.83 (0.01) 17.83
Pan g magnitude 17.76 (0.007)
Pan r magnitude 17.94 (0.004)
Pan i magnitude 18.13 (0.003)
Pan z magnitude 18.31 (0.009)
Pan y magnitude 18.44 (0.01)
E(B-V) 0.034

* 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.