SDSS J083447.83+532311.8

All names: Gaia EDR3 1028785714122046976, SDSS J083447.83+532311.87, Gaia DR3 1028785714122046976, Gaia DR2 1028785714122046976, SDSS J083447.83+532311.8, GALEX J083447.8+532312

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad
Right ascension 08 34 47.84 (0.7) 08 34 47.83 08 34 47.84 (0.9) 08 34 47.83 (0.7)
Declination 53 23 11.85 (0.6) 53 23 11.87 53 23 11.85 (0.8) 53 23 11.85 (0.6)
Spectral type DC: DC: DC: DC
Effective temperature [K] 9106.0 9037.0 12196.0 (710)
log(g) [cgs] 8.52 8.48 8.00 (0)
Mass [M] 0.931 0.891
log(Luminosity) [L]
Cooling age [Gyr] 2.0290 1.9270
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.60 (0.9) 3.34 (1) 2.60 (0.9)
Distance [pc] 383.96 (132) 299.08 (115) 383.97 (132)
Composition
Proper motion (right ascension) [mas/yr] 1.750440867 (0.8) 1.571261123 (2) 1.75 (0.8)
Proper motion (declination) [mas/yr] -0.005646954 (0.9) -1.531961943 (2) -0.006 (0.9)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.69 (0.07) 20.73 (0.07) 20.73 (0.07)
g magnitude 20.67 (0.03) 20.69 (0.04) 20.69 (0.04)
r magnitude 20.76 (0.04) 20.79 (0.04) 20.79 (0.04)
i magnitude 20.99 (0.07) 21.01 (0.07) 21.01 (0.07)
z magnitude 20.73 (0.2) 20.79 (0.3) 20.79 (0.3)
G magnitude 20.69 (0.1) 20.76 20.69 (0.009)
BP magnitude 20.48 (0.1) 20.61
RP magnitude 20.46 (0.2) 20.57
Pan g magnitude 20.60 (0.02)
Pan r magnitude 20.81 (0.06)
Pan i magnitude 20.94 (0.03)
Pan z magnitude 20.73 (0.1)
Pan y magnitude
E(B-V) 0.028

* 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.