Wikipedia:WikiProject Solar System/Assessment

The assessment department of WikiProject Solar System focuses on assessing the quality of Wikipedia's Solar System articles. While much of the work is done in conjunction with the WP:1.0 program, the article ratings are also used within the project itself to aid in recognizing excellent contributions and identifying topics in need of further work.

The ratings are done in a distributed fashion through parameters in the {{WikiProject Solar System}} project banner; this causes the articles to be placed in the appropriate sub-categories of Category:Solar System articles by quality and Category:Solar System articles by importance, which serves as the foundation for an automatically generated worklist (Index · Statistics · Log).

FAQ

See also the general assessment FAQ

1. What is the purpose of the article ratings?: The rating system allows the project to monitor the quality of articles in our subject areas, and to prioritize work on these articles. It is also utilized by the Wikipedia 1.0 program to prepare for static releases of Wikipedia content. Please note, however, that these ratings are primarily intended for the internal use of the project, and do not necessarily imply any official standing within Wikipedia as a whole.
2. How do I add an article to the WikiProject?: Just add {{WikiProject Solar System}} to the talk page; there's no need to do anything else.
3. Someone put a {{WikiProject Solar System}} template on an article, but it doesn't seem to be within the project's scope. What should I do?: Because of the large number of articles we deal with, we occasionally make mistakes and add tags to articles that shouldn't have them. If you notice one, feel free to remove the tag, and optionally leave a note on the project talk page (or directly with the person who tagged the article).
4. Who can assess articles?: Any member of WikiProject Solar System is free to add—or change—the rating of an article. Editors who are not participants in this project are also welcome to assess articles, but should defer to consensus within the project in case of procedural disputes.
5. How do I rate an article?: Check the quality scale and select the level that best matches the state of the article; then, follow the instructions below to add the rating to the project banner on the article's talk page. Please note that some of the available levels have an associated formal review process; this is documented in the assessment scale.
6. Why didn't the reviewer leave any comments?: Unfortunately, due to the volume of articles that need to be assessed, we are unable to leave detailed comments in most cases. If you have particular questions, you might ask the person who assessed the article; they will usually be happy to provide you with their reasoning.
7. What if I don't agree with a rating?: You can ask any member of the project to rate the article again. Please note that some of the available levels have an associated formal review process; this is documented in the assessment scale.
8. Aren't the ratings subjective?: Yes, they are somewhat subjective, but it's the best system we've been able to devise. If you have a better idea, please don't hesitate to let us know!

Instructions

Quality Assessment

An article's quality assessment is recorded using the |class= parameter in the {{WikiProject banner shell}}. Articles that have the {{WikiProject Solar System}} banner template on their talk page will be added to the appropriate categories by quality.

The following standard grades may be used to describe the quality of mainspace articles (see Wikipedia:Content assessment for assessment criteria):

FA	(for featured articles only; adds them to the FA-Class Solar System articles category)	FA
FL	(for featured lists only; adds them to the FL-Class Solar System articles category)	FL
A	(for articles that passed a formal peer review only; adds them to the A-Class Solar System articles category)	A
GA	(for good articles only; adds them to the GA-Class Solar System articles category)	GA
B	(for articles that satisfy all of the B-Class criteria; adds them to the B-Class Solar System articles category)	B
C	(for substantial articles; adds them to the C-Class Solar System articles category)	C
Start	(for developing articles; adds them to the Start-Class Solar System articles category)	Start
Stub	(for basic articles; adds them to the Stub-Class Solar System articles category)	Stub
List	(for stand-alone lists; adds them to the List-Class Solar System articles category)	List
NA	(for any other pages where assessment is unwarranted; adds them to the NA-Class Solar System pages category)	NA
???	(articles for which a valid class has not yet been provided are listed in the Unassessed Solar System articles category)	???

For non-mainspace content, the following values may be used:

FM	(for featured media only; adds them to the FM-Class Solar System pages category)	FM
Category	(for categories; adds them to the Category-Class Solar System pages category)	Category
Draft	(for drafts; adds them to the Draft-Class Solar System pages category)	Draft
File	(for files and timed text; adds them to the File-Class Solar System pages category)	File
Portal	(for portal pages; adds them to the Portal-Class Solar System pages category)	Portal
Project	(for project pages; adds them to the Project-Class Solar System pages category)	Project
Template	(for templates and modules; adds them to the Template-Class Solar System pages category)	Template

The following non-standard assessment grades for mainspace content may be used at a WikiProject's discretion:

Disambig	(for disambiguation pages; adds them to the Disambig-Class Solar System pages category)		Disambig
Redirect	(for redirect pages; adds them to the Redirect-Class Solar System pages category)		Redirect

Quality scale

Class	Criteria	Reader's experience	Editing suggestions	Example
FA	The article has attained featured article status by passing an in-depth examination by impartial reviewers from WP:Featured article candidates. More detailed criteria The article meets the featured article criteria: A featured article exemplifies Wikipedia's very best work and is distinguished by professional standards of writing, presentation, and sourcing. In addition to meeting the policies regarding content for all Wikipedia articles, it has the following attributes. It is: well-written: its prose is engaging and of a professional standard; comprehensive: it neglects no major facts or details and places the subject in context; well-researched: it is a thorough and representative survey of the relevant literature; claims are verifiable against high-quality reliable sources and are supported by inline citations where appropriate; neutral: it presents views fairly and without bias; stable: it is not subject to ongoing edit wars and its content does not change significantly from day to day, except in response to the featured article process; and compliant with Wikipedia's copyright policy and free of plagiarism or too-close paraphrasing. It follows the style guidelines, including the provision of: a lead: a concise lead section that summarizes the topic and prepares the reader for the detail in the subsequent sections; appropriate structure: a substantial but not overwhelming system of hierarchical section headings; and consistent citations: where required by criterion 1c, consistently formatted inline citations using footnotes—see citing sources for suggestions on formatting references. Citation templates are not required. Media. It has images and other media, where appropriate, with succinct captions and acceptable copyright status. Images follow the image use policy. Non-free images or media must satisfy the criteria for inclusion of non-free content and be labeled accordingly. Length. It stays focused on the main topic without going into unnecessary detail and uses summary style where appropriate.	Professional, outstanding, and thorough; a definitive source for encyclopedic information.	No further content additions should be necessary unless new information becomes available; further improvements to the prose quality are often possible.	Solar System
FL	The article has attained featured list status by passing an in-depth examination by impartial reviewers from WP:Featured list candidates. More detailed criteria The article meets the featured list criteria: Prose. It features professional standards of writing. Lead. It has an engaging lead that introduces the subject and defines the scope and inclusion criteria. Comprehensiveness. (a) It comprehensively covers the defined scope, providing at least all of the major items and, where practical, a complete set of items; where appropriate, it has annotations that provide useful and appropriate information about the items. (b) statements are sourced where they appear, and they provide inline citations if they contain any of the four kinds of material absolutely required to have citations. (c) In length and/or topic, it meets all of the requirements for stand-alone lists and includes at minimum eight items; does not violate the content-forking guideline, does not largely duplicate material from another article, and could not reasonably be included as part of a related article. Structure. It is easy to navigate and includes, where helpful, section headings and table sort facilities. Style. It complies with the Manual of Style and its supplementary pages. (a) Visual appeal. It makes suitable use of text layout, formatting, tables, and colour; and a minimal proportion of items are redlinked. (b) Media files. It has images and other media, if appropriate to the topic, that follow Wikipedia's usage policies, with succinct captions. Non-free images and other media satisfy the criteria for the inclusion of non-free content and are labeled accordingly. (c) Accessibility. It uses proper formating to be accessible to all readers. Bulleted and unbulleted lists and tables are structured correctly. Visual media, if included, utilize alternative (alt) text. Stability. It is not the subject of ongoing edit wars and its content does not change significantly from day to day, except in response to the featured list process.	Professional standard; it comprehensively covers the defined scope, usually providing a complete set of items, and has annotations that provide useful and appropriate information about those items.	No further content additions should be necessary unless new information becomes available; further improvements to the prose quality are often possible.	List of natural satellites
A	The article is well organized and essentially complete, having been examined by impartial reviewers from a WikiProject or elsewhere. Good article status is not a requirement for A-Class. More detailed criteria The article meets the A-Class criteria: Provides a well-written, clear and complete description of the topic, as described in Wikipedia:Article development. It should be of a length suitable for the subject, appropriately structured, and be well referenced by a broad array of reliable sources. It should be well illustrated, with no copyright problems. Only minor style issues and other details need to be addressed before submission as a featured article candidate. See the A-Class assessment departments of some of the larger WikiProjects (e.g. WikiProject Military history).	Very useful to readers. A fairly complete treatment of the subject. A non-expert in the subject would typically find nothing wanting.	Expert knowledge may be needed to tweak the article, and style problems may need solving. WP:Peer review may help.	20000 Varuna
GA	The article meets all of the good article criteria, and has been examined by one or more impartial reviewers from WP:Good article nominations. More detailed criteria A good article is: Well-written: the prose is clear, concise, and understandable to an appropriately broad audience; spelling and grammar are correct;^[1] and it complies with the Manual of Style guidelines for lead sections, layout, words to watch, fiction, and list incorporation. Verifiable with no original research: it contains a list of all references (sources of information), presented in accordance with the layout style guideline; reliable sources are cited inline. All content that could reasonably be challenged, except for plot summaries and that which summarizes cited content elsewhere in the article, must be cited no later than the end of the paragraph (or line if the content is not in prose); it contains no original research; and it contains no copyright violations or plagiarism. Broad in its coverage: it addresses the main aspects of the topic; and it stays focused on the topic without going into unnecessary detail (see summary style). Neutral: it represents viewpoints fairly and without editorial bias, giving due weight to each. Stable: it does not change significantly from day to day because of an ongoing edit war or content dispute. Illustrated, if possible, by media such as images, video, or audio: media are tagged with their copyright statuses, and valid non-free use rationales are provided for non-free content; and media are relevant to the topic, and have suitable captions.	Useful to nearly all readers, with no obvious problems; approaching (though not necessarily equalling) the quality of a professional publication.	Some editing by subject and style experts is helpful; comparison with an existing featured article on a similar topic may highlight areas where content is weak or missing.	Comet
B	The article meets all of the B-Class criteria. It is mostly complete and does not have major problems, but requires some further work to reach good article standards. More detailed criteria The article is suitably referenced, with inline citations. It has reliable sources, and any important or controversial material which is likely to be challenged is cited. Any format of inline citation is acceptable: the use of <ref> tags and citation templates such as `{{cite web}}` is optional. The article reasonably covers the topic, and does not contain obvious omissions or inaccuracies. It contains a large proportion of the material necessary for an A-Class article, although some sections may need expansion, and some less important topics may be missing. The article has a defined structure. Content should be organized into groups of related material, including a lead section and all the sections that can reasonably be included in an article of its kind. The article is reasonably well-written. The prose contains no major grammatical errors and flows sensibly, but does not need to be of the standard of featured articles. The Manual of Style does not need to be followed rigorously. The article contains supporting materials where appropriate. Illustrations are encouraged, though not required. Diagrams, an infobox etc. should be included where they are relevant and useful to the content. The article presents its content in an appropriately understandable way. It is written with as broad an audience in mind as possible. The article should not assume unnecessary technical background and technical terms should be explained or avoided where possible.	Readers are not left wanting, although the content may not be complete enough to satisfy a serious student or researcher.	A few aspects of content and style need to be addressed. Expert knowledge may be needed. The inclusion of supporting materials should be considered if practical, and the article checked for general compliance with the Manual of Style and related style guidelines.	Asteroid
C	The article is substantial but is still missing important content or contains irrelevant material. The article should have some references to reliable sources, but may still have significant problems or require substantial cleanup. More detailed criteria The article cites more than one reliable source and is better developed in style, structure, and quality than Start-Class, but it fails one or more of the criteria for B-Class. It may have some gaps or missing elements, or need editing for clarity, balance, or flow.	Useful to a casual reader, but would not provide a complete picture for even a moderately detailed study.	Considerable editing is needed to close gaps in content and solve cleanup problems.	Extraterrestrial life
Start	An article that is developing but still quite incomplete. It may or may not cite adequate reliable sources. More detailed criteria The article has a meaningful amount of good content, but it is still weak in many areas. The article has one or more of the following: A useful picture or graphic Multiple links that help explain or illustrate the topic A subheading that fully treats an element of the topic Multiple subheadings that indicate material that could be added to complete the article	Provides some meaningful content, but most readers will need more.	Providing references to reliable sources should come first; the article also needs substantial improvement in content and organisation. Improve the grammar, spelling, and writing style; decrease the use of jargon.	Calypso (moon)
Stub	A very basic description of the topic. Meets none of the Start-Class criteria.	Provides very little meaningful content; may be little more than a dictionary definition. Readers probably see insufficiently developed features of the topic and may not see how the features of the topic are significant.	Any editing or additional material can be helpful. The provision of meaningful content should be a priority. The best solution for a Stub-class Article to step up to a Start-class Article is to add in referenced reasons of why the topic is significant.	Dorsum Owen
List	Meets the criteria of a stand-alone list or set index article, which is an article that contains primarily a list, usually consisting of links to articles in a particular subject area.	There is no set format for a list, but its organization should be logical and useful to the reader.	Lists should be lists of live links to Wikipedia articles, appropriately named and organized.	List of geological features of the Solar System
Category	Any category falls under this class.	Categories are mainly used to group together articles within a particular subject area.	Large categories may need to be split into one or more subcategories. Be wary of articles that have been miscategorized.	Category:Solar System
Disambig	Any disambiguation page falls under this class.	The page serves to distinguish multiple articles that share the same (or similar) title.	Additions should be made as new articles of that name are created. Pay close attention to the proper naming of such pages, as they often do not need "(disambiguation)" appended to the title.	Extraterrestrial
File	Any page in the file namespace falls under this class.	The page contains an image, a sound clip or other media-related content.	Make sure that the file is properly licensed and credited.	File:Solar system.jpg
Portal	Any page in the portal namespace falls under this class.	Portals are intended to serve as "main pages" for specific topics.	Editor involvement is essential to ensure that portals are kept up to date.	Portal:Solar System
Project	All WikiProject-related pages fall under this class.	Project pages are intended to aid editors in article development.	Develop these pages into collaborative resources that are useful for improving articles within the project.	Wikipedia:WikiProject Solar System
Redirect	Any redirect falls under this class.	The page redirects to another article with a similar name, related topic or that has been merged with the original article at this location.	Editor involvement is essential to ensure that articles are not mis-classified as redirects, and that redirects are not mis-classified as articles.	Pluto (dwarf planet)
Template	Any template falls under this class. The most common types of templates include infoboxes and navboxes.	Different types of templates serve different purposes. Infoboxes provide easy access to key pieces of information about the subject. Navboxes are for the purpose of grouping together related subjects into an easily accessible format, to assist the user in navigating between articles.	Infoboxes are typically placed at the upper right of an article, while navboxes normally go across the very bottom of a page. Beware of too many different templates, as well as templates that give either too little, too much, or too specialized information.	Template:WikiProject Solar System
NA	Any non-article page that fits no other classification.	The page contains no article content.	Look out for misclassified articles. Currently, many NA-class articles may need to be re-classified.

Importance Assessment

An article's importance assessment is generated from the importance parameter in the {{WikiProject Solar System}} project banner on its talk page:

{{WikiProject Solar System|importance=???}}

The following values may be used for the importance parameter to describe the relative importance of the article within the project (see Wikipedia:Version 1.0 Editorial Team/Priority of topic for assessment criteria):


Top (adds articles to Category:Top-importance Solar System articles)		Top
High (adds articles to Category:High-importance Solar System articles)		High
Mid (adds articles to Category:Mid-importance Solar System articles)		Mid
Low (adds articles to Category:Low-importance Solar System articles)		Low
NA (adds articles to Category:NA-importance Solar System articles)		NA
??? (articles for which a valid importance rating has not yet been provided are listed in Category:Unknown-importance Solar System articles)		???

Importance scale

All pages belonging to the Solar System should be rated according to their importance. There four levels Top, High, Mid and Low.

The importance is not static. It evolves as new facts come to light, new events happen and new discoveries are made. The public perception of particular topics also changes with time.

WikiProject article importance scheme
v
t
e
Importance	Criteria	Example
Top	Top importance should be assigned to any article that meets criteria of high importance and, in addition, is either a core topic related to the Solar System or is an object, event or person that is widely known among the public and is subject to frequent discussions in non-scientific press.	Solar System Mars Moon Earth
High	High importance should be assigned to any article that meets the following two criteria: (a) there are plenty of reliable sources to write at least a GA-class article; (b) the article is about a major body or part of the Solar System, very important event or space mission, famous planetary scientist that is or likely to be of strong interest to the general public.	Ganymede (moon) New Horizons Galilean moons 90377 Sedna
Mid	Mid importance should be assigned to any article that meets the following two criteria: (a) there are sufficient reliable sources to write at least a B-class article; (b) the article is about a significant body or part of the Solar System, important event or space mission, notable planetary scientist that is or likely to be of interest to the general public.	Comet Shoemaker–Levy 9 Ariel (moon)
Low	Low importance is the default rating. It is assigned to any article that is of specialist interest, and where there are only few reliable sources about its subject.	Deimos (moon) Coriolis (crater) Google Mars
NA	Subject importance is not applicable. Generally applies to non-article pages such as redirects, categories, templates, etc.	Category:Solar System
???	Subject importance has not yet been assessed.

Statistics

Solar System articles by quality and importance
Quality	Importance
Quality	Top	High	Mid	Low	NA	???	Total
FA	28	29	13	3		3	76
FL	1	1	5	1			8
FM					88		88
GA	4	19	31	42		1	97
B	8	51	87	54		8	208
C	9	93	257	316		45	720
Start	6	40	328	5,013		121	5,508
Stub		8	46	2,086		442	2,582
List		13	25	1,426	10	22	1,496
Category					1,113		1,113
Disambig					30		30
File					438		438
Portal					96		96
Project					15		15
Redirect		7	13	2,577	33,179		35,776
Template					223		223
Assessed	56	261	805	11,518	35,192	642	48,474
Unassessed				20			20
Total	56	261	805	11,538	35,192	642	48,494
WikiWork factors (?)		ω = 46,750			Ω = 5.08

Popular pages

A monthly list of bot-generated pages for WikiProject Solar System along with pageviews.

WikiProject Solar System/Popular pages

Log

The full log of assessment changes for the past thirty days is available; due to its size (ca 100 kB), it cannot be transcluded directly.

^ Prose at the Good Article level is not expected to be at a professional level like it is for Featured Articles. Minor grammatical or style issues that do not impact clarity are not prohibitive of GA status.

[1] Prose at the Good Article level is not expected to be at a professional level like it is for Featured Articles. Minor grammatical or style issues that do not impact clarity are not prohibitive of GA status.

[1]