Literature sources:


A5: V.P.Goranskij with the 0.5 m meniscus Maksutov telescope of the SAI Crimean Station and Apogee Alta U8300 CCD. Rc = Rc(A5) - 0.10; Ic = Ic(A5) - 0.17.
JM: R.Jurdana-Sepic, U.Munari, ArXiv: astro-ph 1509.04642, 2015.
HC: M.Hackstein, R.Chini, M.Haas, P.Abraham, A.Kospal, ATel No.6838, 2014. Rc = r(HC) - 0.14; Ic = i(HC) - 0.40.
MK: H.Maehara, T.Kojima, M.Fujii, ATel No.6770, 2014.
pg: V.P.Goranskij eye estimates based on the Moscow SAI plate collection.
S: E.Semkov, ATel No.8019, 2015.
SO: V.P.Goranskij with the SAO 1 m Zeiss reflector and UBVRcIc photometer based on EEV 42-40 CCD. V = V(SO) - 0.16; B = B(SO) + 0.09; Rc = Rc(SO) - 0.05.