Planet Nine

Quality:

Planet Nine - hypothetical large planet in the far outer Solar System. Article “Planet Nine” in English Wikipedia has 96 points for quality (as of July 1, 2026). The article contains 357 references and 34 sections.

This article has the best quality in Portuguese Wikipedia. However, this article is the most popular in English version.

In June 2026 the article “Planet Nine” was edited by 1 authors in English Wikipedia and written by 6 authors in all languages.

Since the creation of article “Planet Nine”, its content was written by 636 registered users of English Wikipedia and edited by 1493 registered Wikipedia users in all languages.

The article is cited 341 times in English Wikipedia and cited 70047 times in all languages (2427^th place).

The highest Authors Interest rank from 2001:

• Local (English): #4 in January 2016
• Global: #7 in January 2016

The highest popularity rank from 2008:

• Local (English): #327 in January 2016
• Global: #825 in January 2016

There are 42 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	Portuguese (pt) Planeta Nove		96.4788
2	English (en) Planet Nine		95.9836
3	Chinese (zh) 第九行星		88.3631
4	Serbian (sr) Планета девет		87.4392
5	Russian (ru) Девятая планета		86.3412
6	Japanese (ja) プラネット・ナイン		85.5225
7	Spanish (es) Planeta Nueve		83.1664
8	German (de) Planet Neun		67.8632
9	French (fr) Planète Neuf		60.4458
10	Ukrainian (uk) Дев'ята планета		58.2502

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) Planet Nine		6 408 286
2	Russian (ru) Девятая планета		1 232 814
3	Spanish (es) Planeta Nueve		739 626
4	German (de) Planet Neun		732 039
5	Japanese (ja) プラネット・ナイン		485 708
6	French (fr) Planète Neuf		370 300
7	Portuguese (pt) Planeta Nove		218 746
8	Chinese (zh) 第九行星		198 782
9	Dutch (nl) Planeet negen		100 258
10	Czech (cs) Devátá planeta		56 918

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) Planet Nine		25 568
2	Russian (ru) Девятая планета		4 205
3	French (fr) Planète Neuf		2 598
4	Japanese (ja) プラネット・ナイン		2 012
5	German (de) Planet Neun		1 937
6	Spanish (es) Planeta Nueve		1 570
7	Chinese (zh) 第九行星		1 024
8	Portuguese (pt) Planeta Nove		480
9	Dutch (nl) Planeet negen		251
10	Ukrainian (uk) Дев'ята планета		195

The following table shows the language versions of the article with the highest Authors’ Interest.

#	Language	AI award	Relative AI
1	English (en) Planet Nine		636
2	German (de) Planet Neun		149
3	Russian (ru) Девятая планета		111
4	French (fr) Planète Neuf		91
5	Spanish (es) Planeta Nueve		75
6	Japanese (ja) プラネット・ナイン		44
7	Chinese (zh) 第九行星		38
8	Dutch (nl) Planeet negen		37
9	Portuguese (pt) Planeta Nove		29
10	Hebrew (he) כוכב לכת תשיעי (משוער)		26

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

#	Language	AI award	Relative AI
1	English (en) Planet Nine		1
2	Finnish (fi) Planeetta Yhdeksän		1
3	Hebrew (he) כוכב לכת תשיעי (משוער)		1
4	Japanese (ja) プラネット・ナイン		1
5	Serbian (sr) Планета девет		1
6	Chinese (zh) 第九行星		1
7	Arabic (ar) الكوكب التاسع		0
8	Azerbaijani (az) Doqquzuncu Planet		0
9	Catalan (ca) Novè planeta		0
10	Czech (cs) Devátá planeta		0

The following table shows the language versions of the article with the highest number of citations.

On 1 July 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 2026 FIFA World Cup, Kylian Mbappé, Erling Haaland, Democratic Republic of the Congo, FIFA World Cup, Harry Kane, Romelu Lukaku, Senegal, Michael Olise, Sadio Mané.

In English Wikipedia the most popular articles on that day were: 2026 FIFA World Cup, Harry Kane, Julián Quiñones, List of FIFA World Cup top goalscorers, Kylian Mbappé, Democratic Republic of the Congo, Erling Haaland, DR Congo national football team, Melat Kiros, FIFA World Cup.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information