* alf Lyr

[ α=18.6h, δ=38.8° | A0Va | d=7.7 pc ]
* 3 Lyr , * alf Lyr , GJ 721 , GJ 721.0 , HD 172167 , HIP 91262 , HR 7001 , TYC 3105-2070-1
Best fit:
Tstar = 9210 ± 20 K , Lstar = 53.3 ± 0.7 LSun , Rstar = 2.86 ± 0.02 RSun
Tdust = 33.4 ± 0.9 K , RBB = 510 ± 30 au , Ldisk/Lstar = 1.01e-05 ± 3e-07 , λ0 = 55 ± 4 μm , β = 2.06 ± 0.08
Tdust = 148 ± 2 K , RBB = 25.9 ± 0.7 au , Ldisk/Lstar = 5.87e-06 ± 7e-08 , λ0 = 910 ± 70 μm , β = 2.3 ± 0.5