As character names:

U+2BE9 RIGHT HALF BLACK STAR character (⯩)

As raw characters:

⯩

As a string of HTML entities:

⯩

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 175, hex 0xAF, octal \257, binary 10101111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 169, hex 0xA9, octal \251, binary 10101001
This is continuation byte 2, expecting 0 more.

U+2BE9	RIGHT HALF BLACK STAR