BK Camelopardalis is a variable star

Variable star

A star is classified as variable if its apparent magnitude as seen from Earth changes over time, whether the changes are due to variations in the star's actual luminosity, or to variations in the amount of the star's light that is blocked from reaching Earth...

 in the Camelopardalis

Camelopardalis

Camelopardalis is a large but faint constellation in the northern sky. The constellation was introduced in 1612 by Petrus Plancius. Some older astronomy books give an alternative spelling of the name, Camelopardus.-Etymology:...

.

Chinese name

In Chinese

Chinese language

The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...

, , meaning Right Wall of Purple Forbidden Enclosure

Purple Forbidden enclosure

The Purple Forbidden enclosure is one of the San Yuan or Three enclosures. Stars and constellations of this group lie near the north celestial pole and visible all year from temperate latitudes in the Northern Hemisphere.-Asterisms:The asterisms are :...

, refers to an asterism consisting of BK Camelopardalis, α Draconis, κ Draconis

Kappa Draconis

Kappa Draconis is a blue giant star located in the constellation Draco. At an apparent magnitude of 3.88, it is barely visible to the naked eye when artificial lighting from cities is present. Nevertheless, it is a powerful star, approximately five time as massive as the Sun...

, λ Draconis

Lambda Draconis

Lambda Draconis is a star in the constellation Draco. It has the traditional names Gianfar, Giansar, Juza, Giausar or Giauzar....

, 24 Ursae Majoris, 43 Camelopardalis

43 Camelopardalis

43 Camelopardalis is a star in the constellation Camelopardalis.43 Camelopardalis is a blue-white B-type giant with an apparent magnitude of +5.11...

 and α Camelopardalis

Alpha Camelopardalis

Alpha Camelopardalis is an O-type supergiant star, with an apparent visual magnitude of approximately 4.301. It is the third brightest star in the constellation of Camelopardalis, the first and second brightest being β Camelopardalis and CS Camelopardalis, respectively...

. Consequently, BK Camelopardalis itself is known as , representing , meaning First Prime Minister. 上丞 (Shǎngchéng) is westernized in Shang Ching by R.H. Allen, the meaning is "Higher Minister", but it is not cleared designation.