Ọ bụ nnukwu kpakpando nke nwere ụdị kpakpando nke K4 III. Ọ na-enwu ihe dị ka okpukpu 130 karịa Sun. Kochab eruola ọkwa na mmalite ya ebe mkpuchi mpụga ya gbasaa ruo ugboro 42 nke okirikiri nke Sun. Igwe ikuku a gbasaa na-enwu 390 ugboro karịa Sun site na ikuku ya dị na okpomọkụ dị irè nke 4,030 K. Okpomọkụ a na-enye kpakpando ahụ oroma na-egbuke egbuke nke kpakpando K-ụdị. Site n'ịmepụta kpakpando a dabere na usoro evolushọn, enwere ike ịtụle oke nke kpakpando a dị ka 2.2 ± 0.3 nke nke nke Sun. Nkọwapụta oke na-eji radius nke kpakpando a na-atụle na spectroscopically-kpepụta ihe dị n'elu ya na-enye ± 0.9 solar masses. A maara kpakpando ahụ na-aga n'okpuru oge luminosity karịa anyanwụ na oge dị irè nke 4.030 K.
K4 nke Atọ