SDSS J160401.31+083109.0

All names: J1604+0831, GALEX J160401.3+083109, SDSS J160401.31+083109.01, SDSS J160401.30+083109.0, Gaia DR2 4451614618828537216, Gaia DR3 4451614618828537216, Gaia EDR3 4451614618828537216, SDSS J160401.31+083109.0

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 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 16 04 01.31 (0.1) 16 04 01.31 16 04 01.31 16 04 01.31 (0.2) 16 04 01.31 16 04 01.31 (0.1)
Declination 08 31 08.99 (0.1) 08 31 09.07 08 31 09.02 08 31 08.99 (0.1) 08 31 08.99 08 31 09.02 (0.1)
Spectral type DBZA DBAZ DB: DBAZ DB:
Effective temperature [K] 16280.0 11986.0 11757.0 (452) 12300.0 (299) 11454.0 (473)
log(g) [cgs] 9.27 7.91 7.89 8.62 (0.2) 7.98 (0.07)
Mass [M] 1.287 0.535 0.5223 0.572 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.3490
log(H/He) -4.854 -5.5118 (0.2)
log(C/He)
log(Ca/He) -9.2038 (0.1)
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] 4.58 (0.2) 4.26 4.26 (0.3) 4.58 4.58 (0.2)
Distance [pc] 218.28 (9) 234.93 (16) 234.93 (16) 218.28 218.28 (9)
Composition He
Proper motion (right ascension) [mas/yr] 1.330710821 (0.2) 1.291384846 (0.4) 1.331 (0.2)
Proper motion (declination) [mas/yr] -1.895605548 (0.2) -1.916693373 (0.3) -1.896 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.61 (0.02) 18.62 (0.02) 18.61 (0.02)
g magnitude 18.55 (0.008) 18.56 (0.02) 18.55 (0.008)
r magnitude 18.73 (0.009) 18.73 (0.01) 18.73 (0.009)
i magnitude 18.90 (0.01) 18.90 (0.02) 18.90 (0.01)
z magnitude 19.13 (0.04) 19.12 (0.04) 19.13 (0.04)
G magnitude 18.60 (0.02) 18.63 18.60 18.60 (0.003)
BP magnitude 18.64 (0.02) 18.59
RP magnitude 18.58 (0.03) 18.55
Pan g magnitude 18.55 (0.005)
Pan r magnitude 18.73 (0.004)
Pan i magnitude 18.93 (0.007)
Pan z magnitude 19.06 (0.01)
Pan y magnitude 19.25 (0.04)
E(B-V) 0.032

* 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.