SDSS J231937.39+301848.4

All names: SDSS J231937.39+301848.41, J2319+3018, Gaia EDR3 2870363305758068480, Gaia DR3 2870363305758068480, SDSS J231937.39+301848.4, Gaia DR2 2870363305758068480

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Blouin 2020 Coutu et al. 2019 MWDD H Gaia DR2 Hollands et al. 2017 Stilism Kepler et al. 2016 Simbad
Right ascension 23 19 37.41 (2) 23 19 37.39 23 19 37.35 23 19 37.41 (1) 23 19 37.35 (1)
Declination 30 18 48.45 (1) 30 18 48.41 30 18 48.54 30 18 48.45 (2) 30 18 48.54 (2)
Spectral type DZ DZ DZ DZ DZ DZ
Effective temperature [K] 7478.0 (256) 7454.0 (269) 7328.0 7120.0 (200) 6976.0 (103)
log(g) [cgs] 8.00 8.94 8.85 8.00 (0)
Mass [M] 1.1576 1.124
log(Luminosity) [L]
Cooling age [Gyr] 3.4400 4.0010 1.9000
log(H/He) <-3.3805
log(C/He)
log(Ca/He) -8.5 (0.3) -8.4071 (0.3) -8.53 -8.657
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He) -7.71
log(Mg/He) -7.2 (0.3) -7.42
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) -7.3 (0.3) -7.37
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 6.09 6.09 (2) 6.09 (2)
Distance [pc] 164.08 (57) 164.08 (57) 306.00 (41) 164.08 (57)
Composition He He He He He
Proper motion (right ascension) [mas/yr] 42.56238971 (3) 42.562 (3)
Proper motion (declination) [mas/yr] -5.967108483 (4) -5.967 (4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.60 (0.1) 21.67 (0.1) 21.67 (0.1) 21.67 (0.1) 21.67 (0.1)
g magnitude 20.84 (0.03) 20.87 (0.03) 20.87 (0.03) 20.87 (0.03) 20.87 (0.03)
r magnitude 20.77 (0.04) 20.81 (0.04) 20.81 (0.04) 20.81 (0.04) 20.81 (0.04)
i magnitude 20.84 (0.06) 20.86 (0.06) 20.86 (0.06) 20.86 (0.06) 20.86 (0.06)
z magnitude 20.67 (0.2) 20.71 (0.2) 20.71 (0.2) 20.71 (0.2) 20.71 (0.2)
G magnitude 20.78 (0.2) 20.83 20.78 (0.01)
BP magnitude 20.75 (0.2) 20.84
RP magnitude 20.44 (0.2) 20.60
Pan g magnitude 20.90 (0.02)
Pan r magnitude 20.76 (0.02)
Pan i magnitude 20.83 (0.03)
Pan z magnitude 21.10 (0.07)
Pan y magnitude
E(B-V) 0.019

* 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.