SDSS J082720.38+181928.1

All names: GALEX J082720.3+181929, Gaia DR2 662271243940960000, Gaia EDR3 662271243940960000, Gaia DR3 662271243940960000, SDSS J082720.38+181928.1, SDSS J082720.37+181928.1

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 27 20.37 (0.7) 08 27 20.38 08 27 20.37 (0.8) 08 27 20.39 (0.7) 08 27 20.38
Declination 18 19 28.05 (0.5) 18 19 28.12 18 19 28.05 (0.5) 18 19 28.15 (0.5) 18 19 28.12
Spectral type DA DA DA DA
Effective temperature [K] 11334.0 13545.0 (571)
log(g) [cgs] 7.69 7.69 (0.2)
Mass [M] 0.443 0.473 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.2984
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] 2.37 (0.8) 1.61 (1) 2.37 (0.8)
Distance [pc] 422.83 (136) 620.73 (491) 422.83 (136)
Composition H
Proper motion (right ascension) [mas/yr] -14.10164735 (0.8) -13.82331033 (2) -14.102 (0.8)
Proper motion (declination) [mas/yr] -6.462157717 (0.5) -5.794343904 (1) -6.462 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.66 (0.05) 20.67 (0.05) 20.67 (0.05)
g magnitude 20.24 (0.02) 20.23 (0.02) 20.26 (0.02)
r magnitude 20.43 (0.03) 20.43 (0.03) 20.48 (0.03)
i magnitude 20.74 (0.05) 20.75 (0.05) 20.78 (0.05)
z magnitude 20.98 (0.2) 20.85 (0.2) 20.85 (0.2)
G magnitude 20.38 (0.07) 20.44 20.38 (0.007)
BP magnitude 20.38 (0.07) 20.31
RP magnitude 20.15 (0.08) 20.38
Pan g magnitude 20.28 (0.02)
Pan r magnitude 20.45 (0.03)
Pan i magnitude 20.75 (0.03)
Pan z magnitude 20.66 (0.05)
Pan y magnitude 20.18 (0.2)
E(B-V) 0.029

* 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.