㊿

Design
Circled digits

Symbol

 * 1)  The asteroid 50 Virginia.

Usage notes
As of 2022, Unicode provides characters for circled numbers from ⓪ to ㊿. These were not adopted with minor planets in mind. Even before Unicode, it was common to simplify the typesetting of minor-planet symbols by replacing e.g. "㊿" with "(50)". When the number is combined with the name, e.g. "(50) Virginia", the formatting is often further abbreviated to "50. Virginia" or "50 Virginia". Given that as of 2022 there were over 600,000 numbered minor planets, it would be impractical for each to have a Unicode character.

Similarly, ㊿ can be used in Go game notation to mark the 50th placed white stone. For black stones, however, Unicode support does not extend past ⓴. In either case, game notation can extend past 200, so again the existing Unicode characters are not adequate.