Literature sources:

Kis,Njh,Mhh: VSNET.
HM: A.Henden, U.Munari, IBVS No.5822, 2008.
SO: UBVRc photometry by V.P.Goranskij with CCD EEV 42-40 and SAO 1-m telescope.
c7: VRc photometry by V.P.Goranskij with CCD SBIG ST-7 and CrAO 38-cm telescope. V=V(c7)-0.70. B=B(c7)-0.65.
Pi: VRc photometry by V.P.Goranskij with CCD MEADE Pictor-416 and SAI Crimean station 50 cm Maksutov telescope. V=V(Pi)-0.70. Rc=Rc(Pi)+0.30.
47: VRc photometry by V.P.Goranskij with CCD Apogee-47p and SAI Crimean Station 60-cm telescope.