Union Pacific 9000 Class

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Union Pacific 9000 Class

Quality:

Union Pacific 9000 series - class of American 4-12-2 locomotives. Article “Union Pacific 9000 Class” in English Wikipedia has 11.4 points for quality (as of July 1, 2025). The article contains 0 references and 3 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 2.01 points.

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

In June 2025 the article “Union Pacific 9000 Class” was edited by 1 authors in English Wikipedia and written by 1 authors in all languages.

Since the creation of article “Union Pacific 9000 Class”, its content was written by 55 registered users of English Wikipedia and edited by 133 registered Wikipedia users in all languages.

The article is cited 153 times in English Wikipedia and cited 204 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #30801 in June 2022
  • Global: #34038 in December 2012

The highest popularity rank from 2008:

  • Local (English): #267797 in January 2008
  • Global: #30215 in December 2012

There are 5 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, 2025 (including revision history and pageviews for previous years).

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

Languages with the highest quality

#LanguageQuality gradeQuality score
1German (de)
UP-Klasse 9000
28.465
2Czech (cs)
Lokomotiva Union Pacific 9000
13.9748
3Russian (ru)
UP 9000 Class
13.1515
4English (en)
Union Pacific 9000 Class
11.3689
5Italian (it)
Union Pacific 9000
10.7351
More...

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

Most popular in all the time

The most popular language versions of the article "Union Pacific 9000 Class" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Union Pacific 9000 Class
420 170
2German (de)
UP-Klasse 9000
90 208
3Russian (ru)
UP 9000 Class
16 209
4Czech (cs)
Lokomotiva Union Pacific 9000
8 176
5Italian (it)
Union Pacific 9000
1 314
More...

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

Most popular in June 2025

The most popular language versions of the article "Union Pacific 9000 Class" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Union Pacific 9000 Class
2 171
2German (de)
UP-Klasse 9000
235
3Russian (ru)
UP 9000 Class
50
4Italian (it)
Union Pacific 9000
35
5Czech (cs)
Lokomotiva Union Pacific 9000
23
More...

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

The highest AI

Language versions of the article "Union Pacific 9000 Class" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Union Pacific 9000 Class
55
2German (de)
UP-Klasse 9000
50
3Russian (ru)
UP 9000 Class
12
4Czech (cs)
Lokomotiva Union Pacific 9000
8
5Italian (it)
Union Pacific 9000
8
More...

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

The highest AI in June 2025

Language versions of the article "Union Pacific 9000 Class" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
Union Pacific 9000 Class
1
2Czech (cs)
Lokomotiva Union Pacific 9000
0
3German (de)
UP-Klasse 9000
0
4Italian (it)
Union Pacific 9000
0
5Russian (ru)
UP 9000 Class
0
More...

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

The highest CI

Language versions of the article "Union Pacific 9000 Class" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Union Pacific 9000 Class
153
2Russian (ru)
UP 9000 Class
42
3German (de)
UP-Klasse 9000
4
4Italian (it)
Union Pacific 9000
3
5Czech (cs)
Lokomotiva Union Pacific 9000
2
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
csCzech
Lokomotiva Union Pacific 9000
deGerman
UP-Klasse 9000
enEnglish
Union Pacific 9000 Class
itItalian
Union Pacific 9000
ruRussian
UP 9000 Class

Popularity rank trends

Best Rank English:
#267797
01.2008
Global:
#30215
12.2012

AI rank trends

Best Rank English:
#30801
06.2022
Global:
#34038
12.2012

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Union Pacific 9000 series from Wikipedia articles about Whyte notation, List of boiler explosions, Soviet locomotive class АА, Wheel arrangement and List of largest locomotives. Whereas reading the article about Union Pacific 9000 series people most often go to Wikipedia articles on Soviet locomotive class АА, Fairplex railway exhibit, Gresley conjugated valve gear, Baldwin 60000 and Whyte notation.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

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In English Wikipedia the most popular articles on that day were: Ajit Pawar, Border 2, Sharad Pawar, Killing of Alex Pretti, Ilhan Omar, Sunetra Pawar, Todd Monken, Kristi Noem, Wonder Man (miniseries), Gregory Bovino.

About WikiRank

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 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information