This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2736 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In typography, a star is any of several glyphs with a number of points arrayed within an imaginary circle. A commonly used star symbol is the asterisk.
Representations
System
Representation (click value to copy)
Nº
10038
UTF-8
E2 9C B6
UTF-16
27 36
UTF-32
00 00 27 36
URL-Quoted
%E2%9C%B6
HTML hex reference
✶
Wrong windows-1252 Mojibake
✶
HTML named entity
✶
Encoding: GB18030 (hex bytes)
81 37 C1 32
LATEX
\ding{86}
RFC 5137
\u'2736'
Bash and Zsh inside echo -e
\u2736
C and C++
\u2736
C#
\u2736
CSS
\002736
Excel
=UNICHAR(10038)
Go
\u2736
JavaScript
\u2736
Modern JavaScript since ES6
\u{2736}
JSON
\u2736
Java
\u2736
Lua
\u{2736}
Matlab
char(10038)
Perl
"\x{2736}"
PHP
\u{2736}
PostgreSQL
U&'\2736'
PowerShell
`u{2736}
Python
\u2736
Ruby
\u{2736}
Rust
\u{2736}
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