This character is a Modifier Symbol and is commonly used, that is, in no specific script.
The glyph is a compatibility composition of the glyphs Space, Combining Ring Above. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. If its East Asian Width is “narrow”, U+02DA forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
A ring diacritic may appear above or below letters. It may be combined with some letters of the extended Latin alphabets in various contexts.
Representations
System
Representation (click value to copy)
Nº
730
UTF-8
CB 9A
UTF-16
02 DA
UTF-32
00 00 02 DA
URL-Quoted
%CB%9A
HTML hex reference
˚
Wrong windows-1252 Mojibake
◌˚
HTML named entity
˚
Encoding: CP949 (hex bytes)
A2 AA
Encoding: EUC_JP (hex bytes)
8F A2 B6
Encoding: EUC_JIS_2004 (hex bytes)
8F A2 B6
Encoding: EUC_JISX0213 (hex bytes)
8F A2 B6
Encoding: EUC_KR (hex bytes)
A2 AA
Encoding: GB18030 (hex bytes)
81 30 B8 38
Encoding: ISO2022_JP_1 (hex bytes)
1B 24 28 44 22 36 1B 28 42
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 28 44 22 36 1B 28 42
Encoding: ISO2022_JP_EXT (hex bytes)
1B 24 28 44 22 36 1B 28 42
Encoding: ISO2022_KR (hex bytes)
1B 24 29 43 0E 22 2A 0F
Encoding: JOHAB (hex bytes)
D9 AA
Encoding: MAC_ICELAND (hex bytes)
FB
Encoding: MAC_ROMAN (hex bytes)
FB
Encoding: MAC_TURKISH (hex bytes)
FB
LATEX
\r{}
AGL: Latin-1
ring
AGL: Latin-2
ring
AGL: Latin-3
ring
AGL: Latin-4
ring
AGL: Latin-5
ring
Adobe Glyph List
ring
digraph
'0
RFC 5137
\u'02DA'
Bash and Zsh inside echo -e
\u02DA
C and C++
\u02DA
C#
\u02DA
CSS
\0002DA
Excel
=UNICHAR(730)
Go
\u02DA
JavaScript
\u02DA
Modern JavaScript since ES6
\u{2da}
JSON
\u02DA
Java
\u02DA
Lua
\u{2DA}
Matlab
char(730)
Perl
"\x{2DA}"
PHP
\u{2da}
PostgreSQL
U&'\02DA'
PowerShell
`u{2DA}
Python
\u02DA
Ruby
\u{2da}
Rust
\u{2da}
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