SDSS J215644.65+115413.1

All names: SDSS J215644.65+115413.1, SDSS J215644.66+115413.1, SDSS J215644.65+115413.2, Gaia DR3 2726924798369862528, Gaia DR2 2726924798369862528, Gaia EDR3 2726924798369862528

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 21 56 44.63 (0.3) 21 56 44.66 21 56 44.63 (0.4) 21 56 44.67 (0.3) 21 56 44.66 21 56 44.66
Declination 11 54 12.79 (0.3) 11 54 13.21 11 54 12.80 (0.4) 11 54 13.20 (0.3) 11 54 13.17 11 54 13.12
Spectral type sd sd DC SD_auto DA:B: DA
Effective temperature [K] 12000.0 12612.0 21668.0 (801) 22222.0 (872)
log(g) [cgs] 7.99 8.00 5.15 (0.2) 5.24 (0.2)
Mass [M] 0.602 0.583
log(Luminosity) [L]
Cooling age [Gyr] 0.3706 0.3311
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.44 (0.3) 2.76 (0.5) 2.44 (0.3)
Distance [pc] 409.66 (55) 362.25 (61) 409.65 (55)
Composition
Proper motion (right ascension) [mas/yr] -33.19206945 (0.3) -33.07691058 (0.7) -33.192 (0.3) -29.2
Proper motion (declination) [mas/yr] -25.52802265 (0.3) -24.99088394 (0.8) -25.528 (0.3) -24.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.53 (0.03) 19.53 (0.03) 19.56 (0.03) 19.56 (0.03)
g magnitude 19.37 (0.01) 19.37 (0.01) 19.36 (0.01) 19.36 (0.01)
r magnitude 19.57 (0.01) 19.57 (0.01) 19.57 (0.02) 19.57 (0.02)
i magnitude 19.79 (0.02) 19.79 (0.02) 19.80 (0.02) 19.79 (0.02)
z magnitude 19.97 (0.08) 19.97 (0.08) 19.98 (0.09) 19.95 (0.09)
G magnitude 19.48 (0.04) 19.53 19.48 (0.005)
BP magnitude 19.60 (0.04) 19.45
RP magnitude 19.63 (0.1) 19.38
Pan g magnitude 19.39 (0.01)
Pan r magnitude 19.60 (0.01)
Pan i magnitude 19.84 (0.01)
Pan z magnitude 20.03 (0.04)
Pan y magnitude 20.06 (0.04)
E(B-V) 0.047

* 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.