SDSS J083020.36+185814.6

All names: GALEX J083020.4+185814, SDSS J083020.35+185814.4, SDSS J083020.35+185814.5, SDSS J083020.36+185814.6, Gaia DR3 662693838660014464, Gaia EDR3 662693838660014464, Gaia DR2 662693834362748416

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 30 20.35 (0.3) 08 30 20.36 08 30 20.35 (0.7) 08 30 20.36 (0.3) 08 30 20.36
Declination 18 58 14.53 (0.2) 18 58 14.52 18 58 14.53 (0.3) 18 58 14.62 (0.2) 18 58 14.55
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 21648.0 (976) 18323.0 22490.0 (432)
log(g) [cgs] 8.83 (0.1) 8.72 8.69 (0.07)
Mass [M] 1.124349738056324 (0.2) 1.061
log(Luminosity) [L]
Cooling age [Gyr] 0.3732
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 2.45 (0.3) 3.87 (0.8) 2.45 (0.3)
Distance [pc] 408.14 (52) 258.53 (55) 408.15 (52)
Composition H
Proper motion (right ascension) [mas/yr] -14.10734314 (0.3) -14.69342286 (0.8) -14.107 (0.3)
Proper motion (declination) [mas/yr] -6.013381949 (0.2) -7.644253749 (0.6) -6.013 (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 18.96 (0.02) 18.96 (0.02) 18.98 (0.02)
g magnitude 19.02 (0.009) 19.02 (0.009) 19.02 (0.02)
r magnitude 19.37 (0.01) 19.37 (0.01) 19.40 (0.02)
i magnitude 19.68 (0.02) 19.68 (0.02) 19.70 (0.03)
z magnitude 19.79 (0.08) 19.79 (0.08) 19.84 (0.09)
G magnitude 19.22 (0.03) 19.24 19.22 (0.004)
BP magnitude 19.17 (0.03) 19.03
RP magnitude 19.41 (0.05) 19.31
Pan g magnitude 19.04 (0.01)
Pan r magnitude 19.41 (0.01)
Pan i magnitude 19.71 (0.02)
Pan z magnitude 19.99 (0.03)
Pan y magnitude 20.00 (0.02)
E(B-V) 0.027

* 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.