This character is a Other Punctuation and is commonly used, that is, in no specific script.
The glyph is a small version of the glyph Asterisk. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+FE61 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
The asterisk ( *), from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star", is a typographical symbol. It is so called because it resembles a conventional image of a heraldic star.
Computer scientists and mathematicians often vocalize it as star (as, for example, in the A* search algorithm or C*-algebra). An asterisk is usually five- or six-pointed in print and six- or eight-pointed when handwritten, though more complex forms exist. Its most common use is to call out a footnote. It is also often used to censor offensive words.
In computer science, the asterisk is commonly used as a wildcard character, or to denote pointers, repetition, or multiplication.
Representations
System
Representation (click value to copy)
Nº
65121
UTF-8
EF B9 A1
UTF-16
FE 61
UTF-32
00 00 FE 61
URL-Quoted
%EF%B9%A1
HTML hex reference
﹡
Wrong windows-1252 Mojibake
﹡
Encoding: BIG5 (hex bytes)
A1 CE
Encoding: BIG5HKSCS (hex bytes)
A1 CE
Encoding: CP950 (hex bytes)
A1 CE
Encoding: GBK (hex bytes)
A9 7E
Encoding: GB18030 (hex bytes)
A9 7E
Adobe Glyph List
asterisksmall
RFC 5137
\u'FE61'
Bash and Zsh inside echo -e
\uFE61
C and C++
\uFE61
C#
\uFE61
CSS
\00FE61
Excel
=UNICHAR(65121)
Go
\uFE61
JavaScript
\uFE61
Modern JavaScript since ES6
\u{fe61}
JSON
\uFE61
Java
\uFE61
Lua
\u{FE61}
Matlab
char(65121)
Perl
"\x{FE61}"
PHP
\u{fe61}
PostgreSQL
U&'\FE61'
PowerShell
`u{FE61}
Python
\uFE61
Ruby
\u{fe61}
Rust
\u{fe61}
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