Level energy(keV)   Spin & Parity       
       ground state      (7/2+)                
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer Chinese Physics C36 p. 1603-2014, December 2012)
     255.091048 ± 0.000215 (amu)  [mass excess = 84811 ± 200 (keV) ]
 	[These values were derived from systematical trend]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012)
     720 ± 200 (keV) [derived from systematical trend] 
Decay data(Chart of the Nuclides 2014)
     Decay mode     Half-life 
       B-           85 M 18          
Evaluated Data Libraries
     Links to the libraries. 

Parent Nuclides by Reactions in JENDL-4.0
     Cf-254 (Z= 98, A=254), MT=102 (n,γ)