SDSS J160904.90+500555.3

All names: Gaia EDR3 1400326292465559168, Gaia DR3 1400326292465559168, GALEX J160904.8+500555, Gaia DR2 1400326292465559168, SDSS J160904.90+500555.3, SDSS J160904.90+500555.1, USNO-B1.0 1400-00266743, SDSS J160904.90+500555.14, USNO-A2.0 1350-08800583

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Koester & Kepler 2015 Simbad Vincent et al. 2023
Right ascension 16 09 04.89 (0.3) 16 09 04.91 16 09 04.89 (0.4) 16 09 04.91 (0.3)
Declination 50 05 55.09 (0.3) 50 05 55.35 50 05 55.10 (0.3) 50 05 55.39 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 12692.0 12054.0 12183.0 13852.0 (222) 12859.0 (139)
log(g) [cgs] 7.91 8.07 8.12 8.41 (0.2) 8.00 (0)
Mass [M] 0.533 0.628 0.657 0.833 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.4419
log(H/He) <-6.376 <-5.41
log(C/He)
log(Ca/He) <-8.87
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] 3.01 (0.3) 3.25 (0.4) 3.01 (0.3)
Distance [pc] 332.73 (34) 307.70 (42) 338.00 332.73 (34)
Composition He
Proper motion (right ascension) [mas/yr] -12.68101503 (0.3) -13.29206411 (0.6) -12.681 (0.3)
Proper motion (declination) [mas/yr] -18.33764336 (0.3) -18.03323634 (0.7) -18.338 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.60
V magnitude
R magnitude 19.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.38 (0.03) 19.39 (0.03) 19.40 (0.03)
g magnitude 19.29 (0.01) 19.30 (0.02) 19.30 (0.01)
r magnitude 19.50 (0.02) 19.49 (0.02) 19.50 (0.01)
i magnitude 19.71 (0.03) 19.70 (0.04) 19.72 (0.03)
z magnitude 19.88 (0.09) 19.87 (0.1) 19.89 (0.09)
G magnitude 19.37 (0.04) 19.42 19.37 (0.004)
BP magnitude 19.37 (0.04) 19.41
RP magnitude 19.34 (0.06) 19.36
Pan g magnitude 19.31 (0.008)
Pan r magnitude 19.50 (0.01)
Pan i magnitude 19.71 (0.01)
Pan z magnitude 19.89 (0.02)
Pan y magnitude 19.91 (0.1)
E(B-V) 0.018

* 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.