This character is a Other Punctuation 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+2042 forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “asterism” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: dinkus, stars.
The Wikipedia has the following information about this codepoint:
In typography, an asterism, ⁂, is a typographic symbol consisting of three asterisks placed in a triangle, which is used for a variety of purposes. The name originates from the astronomical term for a group of stars.
The asterism was originally used as a type of dinkus in typography, though increasingly rarely. It can also be used to mean "untitled" or author or title withheld – as seen, for example, in some editions of Album for the Young by composer Robert Schumann (№ 21, 26, and 30). In meteorology, an asterism in a station model indicates moderate snowfall.
Representations
System
Representation (click value to copy)
Nº
8258
UTF-8
E2 81 82
UTF-16
20 42
UTF-32
00 00 20 42
URL-Quoted
%E2%81%82
HTML hex reference
⁂
Wrong windows-1252 Mojibake
â‚
Encoding: EUC_JIS_2004 (hex bytes)
AC FE
Encoding: EUC_JISX0213 (hex bytes)
AC FE
Encoding: GB18030 (hex bytes)
81 36 A8 36
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 28 51 2C 7E 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 28 4F 2C 7E 1B 28 42
Encoding: SHIFT_JIS_2004 (hex bytes)
86 FC
Encoding: SHIFT_JISX0213 (hex bytes)
86 FC
Adobe Glyph List
asterism
RFC 5137
\u'2042'
Bash and Zsh inside echo -e
\u2042
C and C++
\u2042
C#
\u2042
CSS
\002042
Excel
=UNICHAR(8258)
Go
\u2042
JavaScript
\u2042
Modern JavaScript since ES6
\u{2042}
JSON
\u2042
Java
\u2042
Lua
\u{2042}
Matlab
char(8258)
Perl
"\x{2042}"
PHP
\u{2042}
PostgreSQL
U&'\2042'
PowerShell
`u{2042}
Python
\u2042
Ruby
\u{2042}
Rust
\u{2042}
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