விக்கிப்பீடியா:குறிப்பிடத்தக்கமை (வானியல் பொருட்கள்)
{{Wikipedia subcat guideline|notability guideline|astronomical objects|WP:NASTRO}}
 {{nutshell
 | Subjects of articles on astronomical objects are required to be notable; an astronomical object is presumed to be notable if it has received significant coverage in [[Wikipedia:Identifying reliable sources|reliable sources]] that are [[விக்கிப்பீடியா:புத்தாக்க ஆய்வு கூடாது|independent of the scientist(s) who discovered the object, or have a vested interest in its study]].
 | Additional criteria may help characterize an astronomical object as notable.
 }}
 
 {{Notabilityguide}}
 
 This guideline is meant to reflect consensus about the [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை|notability]] of [[வானியல்சார் பொருள்]]s. The guideline covers all significant [[physical body|physical entities]], associations or structures that current [[அறிவியல்]] has confirmed to exist in [[outer space]]. The guideline does not cover topics relating to artificial structures in space, such as [[செயற்கைக்கோள்]]s, [[விண்கலம்]], [[விண்ணுளவி]]s, [[விண்வெளி நிலையம்]]s or [[விண்வெளி நோக்காய்வுக்கலம்]]s. It also does not cover [[புவி|terrestrial locations]], [[airspace]], or material that has been transported to the Earth's atmosphere or surface, including [[moon rock]]s, [[meteor shower]]s and [[விண்வீழ்கல்]]s.
 
 Simply stated, an astronomical object is a body of matter (or collection of such bodies) that is bound together by a [[அடிப்படை விசைகள்]], has boundaries defined by [[காட்சிக்குட்பட்ட பேரண்டம்#Large-scale structure|large-scale structure]] (e.g. voids), or is a combined grouping through viewing perspective (e.g. [[இரட்டை விண்மீன்]]s). This includes [[விண்மீன் பேரடை|galaxies]], [[நெபுலா]]e, [[விண்மீன் கொத்துகள்]]s, [[star system]]s, individual [[விண்மீன்]]s, [[கோள்]]s, [[minor planet]]s, [[சிறுகோள்]]s, [[வால்வெள்ளி]]s, and [[நிலா]]s. It can also include bodies of matter that are held together by masses other than their own, such as a [[circumstellar disk]], [[accretion disc]], or [[zodiacal dust]].
 
 == Basic notability ==
 === No inherent notability ===
 Notable means &quot;worthy of being noted&quot; or &quot;attracting notice&quot;. It is not synonymous with &quot;fame&quot; or &quot;importance&quot;. Astronomical objects are notable if they have garnered a certain threshold of attention and analysis in the scientific literature and/or popular media. Famous astronomical objects are likely to have more readily available [[விக்கிப்பீடியா:மெய்யறிதன்மை|verifiable]] information from [[WP:Identifying reliable sources|reliable sources]] that provide evidence of notability; however, more obscure objects can still be notable.
 
 Even if editors personally believe an astronomical object is &quot;important&quot; or &quot;inherently notable&quot;, astronomical objects are only accepted as notable if they have attracted notice in reliable sources. The fact that an astronomical object [[Wikipedia:Existence ≠ Notability|exists in space]] is by itself not enough to support notability. There exists a perennial debate on Wikipedia about the notability of [[Wikipedia:Village pump (policy)/Archive 75#Proposed policy change - WP:NOTABILITY + geographical locations|geographic features]], with no clear consensus; in practice all named geographic features (mountains, rivers, hills) are notable enough for an article. Some editors have included astronomical objects in the blanket category of geographic features, with the result being that it is acceptable for individual astronomical objects to be part of a [[Wikipedia:Outcomes#Geography and astronomy|list of similar objects]]. This notability guideline does not alter that practice with respect to [[விக்கிப்பீடியா:பட்டியலிடல்|lists]]. However, unlike Earth-based geographic features, arbitrary astronomical objects are unlikely to be visited or run across by a general reader of Wikipedia. Therefore, unless an astronomical object has significant coverage in the media or published sources, the likelihood that a general reader would choose to search Wikipedia for an arbitrary astronomical object is quite low. This is not a matter of [[விக்கிப்பீடியா:தமிழ் விக்கிப்பீடியா இவை அன்று|dubious predictions]]; it is just common sense. Therefore, unlike Earth-based geographic features, the existence of an astronomical object, or even the fact that it has been named (see below) does not guarantee notability.
 
 === No inherited notability ===
 In the sense that an object has been discovered or observed, it may have been noted by a scientist or scientists. For the purposes of this guideline, ''notable'' means having attracted significant notice in the spirit of [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை]]. [[WP:ITSA|No astronomical object is exempt from this requirement, no matter what kind of object it is]]. If the individual object has received no or very little notice from [[Wikipedia:Independent sources|independent sources]], then it is not notable even though astronomical objects of its type are commonly notable. Also, just because the object is listed by name in a paper does not ensure notability. An object may be on the observation list of a large-scale survey, or a study of many objects of a specific type. Unless the astronomical object is the primary, or one of the primary, targets of a study, then such a study should not be used to support the object's notability.
 
 Likewise, just because an object is listed in a database does not mean it is notable. Some databases and surveys, such as the [http://ssd.jpl.nasa.gov/sbdb.cgi JPL Small-Body Database] or the [[Sloan Digital Sky Survey]] list [http://ssd.jpl.nasa.gov/?body_count hundreds of thousands] or [http://arxiv.org/abs/1501.00963 millions] of objects (respectively). Other databases concern themselves with specific classes of objects and have fewer entries. Several, if not most, of the listed objects have little information beyond their physical parameters and discovery circumstances. It is not the job of Wikipedia to [[விக்கிப்பீடியா:தமிழ் விக்கிப்பீடியா இவை அன்று|needlessly duplicate content in these databases]]. Likewise, just because, for example, a minor planet has been [http://www.minorplanetcenter.net/iau/info/HowNamed.html named by the Committee for Small-Body Nomenclature,] this does not necessarily mean that object is notable. Unless the object has been the subject of ''significant commentary'' or ''significant study'' (i.e. beyond discovery and initial parameter constraints), it probably does not warrant an article. 
 
 This guideline does not prohibit the creation or maintenance of [[விக்கிப்பீடியா:பட்டியலிடல்|list articles]] that contain tables of properties and information related to astronomical objects. However, such lists are still subject to Wikipedia's content policies, such as [[விக்கிப்பீடியா:மெய்யறிதன்மை|verifiability]] and [[விக்கிப்பீடியா:புத்தாக்க ஆய்வு கூடாது|no original research]].
 
 == Criteria ==
 {{shortcut|WP:NASTCRIT}}
 If an astronomical object meets ''any'' of the following criteria, supported through ''[[WP:Independent sources|independent]]'' [[Wikipedia:Reliable sources|reliable sources]], it probably qualifies for a stand-alone article. If an astronomical object meets none of these criteria, it ''may'' still be notable, provided it meets the conditions of [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை]], though the merits of an article about an astronomical object will rest primarily on material that is verifiable through independent sources. &lt;!-- See the '''Notes and Examples''' section below ''before applying this criterion''. --&gt;
 
 # {{anchor|C1}} The object is, or has been, visible to the naked eye. For ordinary stars, this includes any object with an [[Bright Star Catalogue|HR catalogue]] identifier.
 # {{anchor|C2}} The object is listed in catalogues of interest to amateur astronomers (e.g. [[மெசியே பொருள்]], [[Caldwell catalogue]]), or a catalogue of high historical importance (e.g. [[புதிய பொதுப் பட்டியல்]]). Being listed in comprehensive databases and surveys such as [[2MASS]] or [[2dFGRS]] isn't enough for notability.
 # {{anchor|C3}} The object has been the subject of multiple, non-trivial published works. This includes published works in all forms, such as newspaper articles, books, television documentaries and articles in peer-reviewed scientific journals. A single paper is not enough to establish notability for most objects. Being mentioned alongside other similar objects, such as in a table of properties of 200 newly discovered supernovae, does not constitute non-trivial coverage; the paper needs to have ''significant commentary'' on the object.
 # {{anchor|C4}} The object was discovered before 1850, prior to the advent of stellar astrophotography or automated technology. (The first asteroid discovered photographically was [[323 Brucia]] in 1891.)
 
 For the purposes of this guideline, &quot;independent&quot; means independent of the scientist or scientists who discovered the object, or others who may have a [[விக்கிப்பீடியா:நலமுரண்|conflict of interest]] in promoting the object. The guideline does not prohibit the use of sources generated by the primary researchers, but they are not sufficient to establish notability.
 
 Although some objects might qualify for a standalone article based on this guideline alone, it may still be best to create redirects to a more general article. For example, it might be best to consolidate the information about the individual planets of a [[planetary system]] on the article about its parent star. Whether it is best to consolidate or to have individual articles should be determined on a case-by-case basis, on the relevant article's talk page.
 
 '''Note 1:''' These criteria do not supersede [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை]], they merely supplement and clarify it within the context of astronomical objects. If an astronomical object does not meet the [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை|general notability guideline]], especially if it lacks evidence of significant coverage in independent, reliable sources, then it risks being merged or redirected to an existing article, or deleted altogether.
 
 '''Note 2:''' Per [[விக்கிப்பீடியா:தானியங்கி கொள்கை]], the systematic creation of articles on astronomical objects based on information retrieved from various astronomical databases should be discussed at [[WT:ASTRO]] first.
 
 '''Note 3:''' Hypothesized or candidate astronomical objects may be notable if they have been subject to multiple, independent reliable sources that attest to their notability. Owing to [[விக்கிப்பீடியா:தமிழ் விக்கிப்பீடியா இவை அன்று]], it is irresponsible for Wikipedia to promote a hypothesized or candidate object as actually existing before confirmation by reliable sources. As with [[#C2|criterion 2 above]], the mere fact that an astronomical object has been hypothesized to exist or has been included in comprehensive source catalogs of candidate objects is not enough to confer notability.
 
 == Failing all criteria ==
 If no criteria can be met for either a standalone article or inclusion in a more general article, and improvements have not worked or cannot be reasonably tried, then there are two deletion procedures to be considered:&lt;ref name=&quot;wpBefore&quot; group=&quot;lower-alpha&quot; /&gt;
 * For articles that do not meet the [[விக்கிப்பீடியா:துரித நீக்கல் தகுதிகள்|criteria for speedy deletion]] ([[விக்கிப்பீடியா:துரித நீக்கல் தகுதிகள்#A7]] especially), but are uncontroversial deletion candidates, place &lt;code&gt;&lt;nowiki&gt;{{subst:PROD|concern=REASON TO DELETE}}&lt;/nowiki&gt;&lt;/code&gt; at the top of the article. This allows the article to be deleted after 7 days if nobody objects (see [[Wikipedia:Proposed deletion]], or PROD).
 * For cases where you are unsure about deletion or believe others might object, nominate the article for the [[விக்கிப்பீடியா:நீக்கலுக்கான வாக்கெடுப்பு|Articles for deletion]] process (or AfD), where its merits will be discussed for 7 days.
 When nominating an article for deletion (via either PROD or AfD process), please place &lt;code&gt;&lt;nowiki&gt;{{WikiProject Astronomy|object=yes}}&lt;/nowiki&gt;&lt;/code&gt; at the top of its talk page, as well as any other relevant Wikiproject templates (e.g. &lt;code&gt;&lt;nowiki&gt;{{WikiProject Physics}}&lt;/nowiki&gt;&lt;/code&gt; for an object which is of particular interest to physics). This will notify [[விக்கிப்பீடியா:விக்கித் திட்டம் வானியல்|WikiProject Astronomy]] via [[WP:AALERTS]] that the article is being considered for deletion. If using the AfD process, you can also tag the deletion discussion with &lt;code&gt;&lt;nowiki&gt;{{subst:delsort|Astronomy|~~~~}}&lt;/nowiki&gt;&lt;/code&gt;, which will list the discussion at [[Wikipedia:WikiProject Deletion sorting/Astronomy]].
 
 == Special cases ==
 === Failing basic criteria but possibly helpful in another article or list ===
 {{shortcut|WP:NASTHELP}}
 If neither a satisfying explanation nor appropriate sources can be found for a standalone article, but a few sentences about the object may help another article or list:
 * If an appropriate list already exists (e.g. a sub-list of [[List of minor planets]]), then create a [[Help:Redirect|redirect]] for the object to the list. (For minor planets, see [[#Dealing with minor planets|dealing with minor planets]] below.)
 * Be sure to [[விக்கிப்பீடியா:கட்டுரைகளை ஒன்றிணைத்தல்|Merge]] any appropriate information from the article into a broader article or list providing context.
 * If a basic redirect is not possible, but an article exists that the information could be merged, place a {{tl|merge to}} tag on the page, indicating the page where the article may be merged. Be sure to start a section in the target article's talk page to discuss the merge.
 * If no article or list currently exists into which the astronomical object can be merged, consider writing the article yourself or [[விக்கிப்பீடியா:கோரப்படும் கட்டுரைகள்|request]] the article be written.
 
 Astronomical objects that are part of a hierarchy of objects, such as a [[இயற்கைத் துணைக்கோள்]] system, [[planetary system]] or a [[star system]], may be beneficially merged into the article about the system or hosting object. The criteria applied to merged article content are [[விக்கிப்பீடியா:குறிப்பிடத்தக்கமை|not the same]] as those applied to article creation. Content coverage within such system articles is governed by the principle of [[விக்கிப்பீடியா:நடுநிலை நோக்கு|due weight]] and other [[:Category:Wikipedia content policies|content policies]].
 
 Only use [[விக்கிப்பீடியா:நீக்கலுக்கான வாக்கெடுப்பு|AfD]] as a last resort for individual articles. If an editor is dealing with a large mass of articles, then redirect or [[WP:PROD|PROD]] is more appropriate, because it is not ideal to flood AfD logs with these requests. When in doubt, bring the issue to [[WP:ASTRO|WikiProject Astronomical objects]] for discussion.
 
 === Failure to explain the subject's notability ===
 If an article does not explain the notability of its subject,&lt;ref name=&quot;assertNotability&quot; group=&quot;lower-alpha&quot; /&gt; try to improve it by:
 * [[விக்கிப்பீடியா:துணிவு கொள்|Rewriting it yourself]]
 * Asking for advice on the article's talk page
 * Starting a discussion at [[Wikipedia:WikiProject Astronomical objects|WikiProject Astronomical objects]] (especially consider this if it concerns more than one or two articles)
 
 === Insufficient sources ===
 If an article fails to cite sufficient sources:
 * Look for sources yourself.
 ** A good place to look for astronomical papers is the [[Astrophysics Data System]] (ADS) [http://adsabs.harvard.edu/abstract_service.html abstract service]. Put the name of the object(s) in quotes and place it in the subject/keyword box. Try possible variations of the object's name if your first searches don't find any papers.
 ** Many astronomical objects outside of the Solar System have an entry in the [[SIMBAD]] [http://simbad.u-strasbg.fr/simbad/ database]. Try a lookup of the object by identifier, then use the &quot;display -&gt; reference summary&quot; in the &quot;reference&quot; section. These will often have a link back to ADS, which may include free copies of the articles.
 ** The [[NASA/IPAC Extragalactic Database]] ([http://ned.ipac.caltech.edu/ NED]) contains data for over a million objects, including entries in the [[புதிய பொதுப் பட்டியல்]] (NGC). For each object, the data entries typically list the reference source as a bibliographic code that links back to an ADS abstract.
 ** When using a search engine to look for information on an object, also try passing standard abbreviations or alternate catalogue identifiers as search terms. (See [[astronomical naming conventions]].)
 * Ask for advice on where to look for sources on the article's talk page or at [[Wikipedia talk:WikiProject Astronomy]].
 * Put the {{tlx|notability}} tag on the article to notify other editors.
 
 == Examples ==
 
 === Extrasolar planets ===
 [[HAT-P-40 b|HAT-P-40&amp;nbsp;b]] is a [[சூடான வியாழனை போன்ற கோள்கள்]] [[புறக்கோள்]]. Its discovery was announced in 2012 by the [[HATNet Project]] in [http://adsabs.harvard.edu/abs/2012AJ....144..139H a paper on three new discoveries]. It has been included in several large [http://exoplanet.eu/catalog/hat-p-40_b/ catalogues] and [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HAT-P-40b databases], and [http://adsabs.harvard.edu/abs/2016PASP..128i4401S included in a list of possible targets for follow-up] (where it was given the lowest priority). However, beyond the initial discovery paper, none of those sources provide any significant commentary on this particular exoplanet. There have been no observations by other teams of astronomers, nor has there been any coverage in the popular media. The object exists, but does not meet any of the criteria above so does not have an article on Wikipedia; instead it has a one-line entry in the [[List of exoplanets discovered in 2012]]. The host star ([[TYC 3607-1028-1]]) is not independently notable either, so also doesn't have an article.
 
 [[ஜிஜே 1241 பி]] was [http://adsabs.harvard.edu/abs/2009Natur.462..891C discovered in 2009] by the [[MEarth Project]]; it was one of the first known [[super Earth]] exoplanets. There have been [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=gj%201214b&amp;NbIdent=1&amp;Radius=2&amp;Radius.unit=arcmin&amp;submit=submit%20id numerous studies by other teams of astronomers] devoted to just this object, several of which have been [https://www.google.co.uk/search?tbm=nws&amp;q=gj+1214b&amp;oq=gj+1214b reported in the popular media]. It easily passes point 3 of the [[#Criteria|criteria]], so rightly has a Wikipedia article.
 
 === Dealing with minor planets ===
 {{Shortcut|WP:DWMP|WP:AST2000}}
 Asteroid [[List of minor planets: 182001–183000#016|182016 (1999 XF&lt;sub&gt;255&lt;/sub&gt;)]]  can be found on the [[JPL Small-Body Database]] (JPL SBDB). However, it does not show up in searches for additional references. The asteroid exists, but up to now is not an object that has warranted further study. Placing information about this object onto the corresponding [[:Category:Lists of minor planets by number|list of minor planets]] page is more appropriate in this circumstance than creating a stand-alone article.
 
 [[532 Herculina]] is another asteroid. This object has had many follow-up studies, including an observation by the [[ஹபிள் விண்வெளித் தொலைநோக்கி]]. It is appropriate for an object like this to have a stand-alone article.
 
 Before 2012, when this notability guideline did not yet exist, approximately 20,000 asteroid stubs were mass-created by [[விக்கிப்பீடியா:தானியங்கிகள்|bots]] and human editors. This created a considerable backlog of articles to be cleaned up, redirected, merged, or deleted. [[Wikipedia talk:Notability (astronomical objects)/Archive 4#Proposed changes|By consensus]], asteroids [[Minor planet designation|numbered]] below 2000 should be discussed before re-directing. To not overly burden the community, editors should not nominate more than 10 asteroids a day to [[விக்கிப்பீடியா:நீக்கலுக்கான வாக்கெடுப்பு|AfD]] for discussion. For asteroids numbered above 2000, if an article of questionable notability is found, '''and''' a good-faith search has failed to locate references establishing notability, then it is appropriate to redirect the stub to the appropriate [[:Category:Lists of minor planets by number|list of minor planets]] article, keeping the original categories and {{tl|DEFAULTSORT}} information. For best results, the redirect can be linked to the section containing the specific entry on the list article. For example, suppose you want to create a redirect to the section with the minor planet ''{{-r|57658 Nilrem}}'' entry on the [[List of minor planets: 57001–58000]] article. This minor planet is found at the anchor &lt;code&gt;#658&lt;/code&gt; on the list page. Hence, a redirect can be created (see [https://en.wikipedia.org/w/index.php?title=57658_Nilrem&amp;type=revision&amp;diff=728441856&amp;oldid=698748799 diff]) with the following content:
 {{pre2|&lt;nowiki&gt;
 #REDIRECT [[List of minor planets:57001–58000#658]]
 
 {{NASTRO comment}}
 
 {{DEFAULTSORT:Nilrem}}
 [[Category:Main-belt asteroids|057658]]
 [[Category:Discoveries by Michel Ory]]
 [[Category:Astronomical objects discovered in 2001|20011017]]
 [[Category:Minor planet redirects|57658 Nilrem]]
 &lt;/nowiki&gt;
 }}
 
 === Objects named after famous individuals or characters ===
 If an otherwise non-notable object has been named for a famous individual or mythological character, then it may be appropriate to include this information ''in the article for the individual or character'' (i.e. the notability of the asteroid is [[WP:INHERIT|not inherited]] from its notable namesake). If the object is notable for other reasons, then of course the information may also be included in its article.
 
 == See also ==
 * [[Wikipedia:Naming conventions (astronomical objects)]]
 * [[விக்கிப்பீடியா:மேற்கோள் சுட்டுதல்]]
 * [[Wikipedia:Identifying reliable sources]]
 * [[Wikipedia:Search engine test]]
 * [[விக்கிப்பீடியா:மெய்யறிதன்மை]]
 
 == Notes ==
 {{reflist
 | group = lower-alpha
 | refs =
 
 &lt;ref name=&quot;wpBefore&quot;&gt;
 Wikipedia editors have been known to reject nominations for deletion that have been inadequately researched. Research should include attempts to find sources that might demonstrate notability, and/or information that would demonstrate notability in another manner. See [[விக்கிப்பீடியா:நீக்கலுக்கான வாக்கெடுப்பு]].&lt;/ref&gt;
 &lt;ref name=&quot;assertNotability&quot;&gt;
 The text of an article should include enough information to explain why the object is notable. External arguments via a talk page or [[விக்கிப்பீடியா:நீக்கலுக்கான வாக்கெடுப்பு|AFD debate page]] are not part of the article itself, and promises on those pages to provide information are not as valid as the existence of the information on the article page itself.
 &lt;/ref&gt;
 
 }}