ASASSN-15ko SDSS colors suggest a short orbital period. ASASSN-15ko --- ------- 20:22:18.28 13:40:36 2015-06-6.55 15.75 SDSS DSS VIZIER ------- CV candidate, Matches to SDSS g=20.3 source, V>16.8 on 2015-05-30.44, V=15.8 on 2015-06-06.55. ASASSN-15ko 20150530.44 <168V ASN ASASSN-15ko 20150606.55 158V ASN