en.wikipedia.org website review
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SEO Keyword summary for en.wikipedia.org/wiki/astronomical_coordinate_systems
Keywords are extracted from the main content of your website and are the primary indicator of the words this page could rank for. By frequenty count we expect your focus keyword to be cos
Focus keyword
Short and long tail
Short Tail Keywords cos right left |
long Tail Keywords (2 words) coordinate system coordinate systems celestial sphere equatorial coordinates leftdelta rightcos |
long Tail Keywords (3 words) system main article nautical almanac office move to sidebar astronomical coordinate systems us naval observatory leftdelta rightcos leftphi equatorial coordinate system |
en.wikipedia.org On-Page SEO Scan
Descriptive Elements
The <head> element of a en.wikipedia.org/wiki/astronomical_coordinate_systems page is used to inform the browser and visitors of the page about the general meta information. The head section of the page is where we place the page title, the definition of the HTML version used, the language of in which the page is written. In the head section we can also include JavaScript and CSS (markup) files for the page.
Page title
Title length
astronomical coordinate systems wikipedia
Meta description
Meta description legth
Meta description SEO
No meta relevance in the description detected !
Content SEO
Number of Words
Spam detected?
Headings
Heading distribution
Heading normalisation
Heading SEO impact
Emphasis (bold and italic)
Emphasis SEO impact
Images
Number of images
Images dimensions
Image alt descriptions
Images SEO impact
wikipedia free encyclopedia displaystyle beginalignedhtheta textlalpha mboxorhtheta textglambda textoalpha alpha theta textlhmboxoralpha textohendaligned beginalignedtan leftlambda rightsin leftalpha rightcos leftvarepsilon righttan leftdelta right over cos rightqquad begincasescos leftbeta rightendcasessin ptbeginbmatrixcos rightendbmatrixbeginbmatrix sin rightendbmatrixbeginbmatrixcos rightendbmatrix pttan rightendcases ptsin rightendbmatrixendaligned leftarightsin lefthright lefthrightsin leftphi textorighttan textorightqquad leftarightcos lefthrightcos textorightsin textorightendcases textorightcos lefthrightendaligned aarctanxy beginalignedxsin rightycos beginalignedbeginbmatrixcos leftarightendbmatrixbeginbmatrixsin textoright textorightendbmatrixbeginbmatrixcos rightendbmatrixbeginbmatrixsin lefttheta lrightsin lright lrightcos endbmatrixbeginbmatrixcos leftaright leftarightendaligned harctanxy leftarightycos leftarightendbmatrixbeginbmatrixcos endbmatrixbeginbmatrixsin leftarightendbmatrixendaligned beginalignedcos leftltextncplrightcosbsin textgrightcos textgrightsin leftltextncplrightcosbcosdelta leftbrightsin textgrightendaligned textgdelta textg ltextncp circ qquad delta beginalignedsin leftltextncplrightcos leftbrightcos leftltextncplrightsin leftltextncplrightendaligned icon wikimedia foundation powered mediawiki
Mobile SEO en.wikipedia.org/wiki/astronomical_coordinate_systems
Mobile rendering
Mobile optimizations
Responsive design detected (mobile css)
No flash detected !
Mobile improvement
Marketing / lead generation for en.wikipedia.org/wiki/astronomical_coordinate_systems
Social Media
Facebook shares | Facebook likes | ||
Facebook comments | Tweets | ||
Google +1 |
Conversion form
Search form
Analytics
Online presence
SERP Preview
SERP Title
SERP Link
SERP Description
Domain Level SEO
Domain name
16 characters long
Domain name SEO Impact
Path name
astronomical found in path !
coordinate found in path !
system found in path !
systems found in path !
Structured data
Publisher Markup
Other Structured data
Website configuration
Correct processing of non-existing pages?
Favicon icon found?
Robots.txt found?
Sitemap found?
Navigation and internal links
Navigation
Url seperator
Human readable urls
Number of links
Link SEO Impact
statistics
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en.m.wikipedia.org |
en.wikipedia.org wikimedia foundation inc
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w httpsenwikipediaorgwindexphptitleastronomicalcoordinatesystemsoldid1241320400
page information
printable version
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wiki stars
galactic
ecliptic
equatorial
celestial sphere
equinox
primary xaxis direction
astronomy
coordinate systems
positions
celestial objects
satellites
planets
galaxies
reference frame
horizon
north
threedimensional space
plot
direction
spherical coordinates
geographic coordinate system
earth
fundamental plane
hemispheres
great circle
rectangular coordinates
units
axis of rotation
equator
horizontal
zenith
nadir
azimuth
north
south
sun
celestial equator
celestial poles
declination
right ascension
hour angle
ecliptic
ecliptic poles
ecliptic latitude
ecliptic longitude
galactic plane
galactic poles
galactic center
supergalactic
supergalactic plane
sidereal day
solar system
b1950
j2000
nutation
astrological signs
zodiac
barycenter
parameters
euler angles
rotation matrix
galactic longitude
galactic latitude
observers longitude
observers latitude
obliquity of the ecliptic
greenwich sidereal time
spherical trigonometry
complementary angle
arctangent
second arctangent function
epoch
precessed
sexagesimal measure
degrees
radians
arcsin function
quadrant
meridian
astropy
large binocular telescope
xephem
standards of fundamental astronomy
astronomical almanac
navigation
atmospheric refraction
diurnal parallax
moon
prime meridian
apparent longitude
barycentric and geocentric celestial reference systems
international celestial reference system and its realizations
planetary coordinate system
terrestrial reference frame
american astronomical society
bibcode
s2cid
aaboe asger
isbn
cambridge university press
arxiv
united states naval observatory
kstars
linux
kde
orbits
list of orbits
box
parabolic trajectory
circular
elliptical
highly elliptical
horseshoe
hyperbolic trajectory
inclined
noninclined
kepler
lagrangian point
osculating
parking
retrograde and prograde motion
synchronous
hohmann transfer
geocentric
geosynchronous
geostationary
geostationary transfer
graveyard
high earth
low earth
medium earth
molniya
nearequatorial
orbit of the moon
polar
heliosynchronous
transatmospheric
tundra
very low earth
areocentric
areosynchronous
areostationary
distant retrograde
halo
lissajous
libration
lunar
heliocentric
earths orbit
mars cycler
lunar cycler
eccentricity
semiminor axis
apsides
inclination
longitude of the ascending node
argument of periapsis
longitude of the periapsis
mean anomaly
true anomaly
eccentric anomaly
mean longitude
true longitude
orbital period
mean motion
orbital speed
maneuvers
bielliptic transfer
collision avoidance spacecraft
deltav
deltav budget
gravity assist
gravity turn
inclination change
lowenergy transfer
oberth effect
phasing
rocket equation
rendezvous
translunar injection
transposition docking and extraction
orbitalmechanics
characteristic energy
escape velocity
ephemeris
ground track
hill sphere
interplanetary transport network
keplers laws of planetary motion
nbody problem
orbit equation
orbital state vectors
perturbation
specific orbital energy
specific angular momentum
twoline elements
invariable
coordinate system
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Links to external pages
Outloing links
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SEO Advice for en.wikipedia.org
In this section we provide pointers on how you can to optimize your web page so it can be found more easily by search engines and how to make it rank higher by optimizing the content of the page itself. For each of the individual criteria the maximum score is 100%. A score below 70% is considered to be indication that the page is not complying with general SEO standards and should be evaluated and/or fixed. Not every factor is weighted the same and some are not as important as others. Relatively unimportant factors like meta keywords are not included in the overall score.
Item | Factor | Pointers | |
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PageTitle | 100% | Far too many sites lack a page title. A page title is the first thing that shows in the search results so always use the title element. | |
Title relevance | 98% | A title should reflect the contents of a site. This site has a 75 % match | |
Title Length | 100% | Limit your title to anywhere between 40 and 70 characters. Your title was 44 characters long | |
Meta Description | 0% | A meta description is the second element that shows in the search results so always use the meta description. | |
Meta description length | 0% | The meta description should be between 145 and 160 characters. This meta description is 1 characters long. | |
Meta description relevance | 0% | Meta Description should reflect the contents of a site. This site has a 0 % match | |
Number of internal links | 30% | Linking to internal pages makes pages easier to find for search engines. Try to keep the number of links on your page roughly below 100. There are 313 internal links on this page. | |
Folder structure | 100% | We found a folder structure in the links on your page. A good folder structure makes a site easier to navigate. We found 3 level 1 folders and 6 folders above or in the first level of navigation. | |
Headings | 100% | Headers should reflect the contents of a site. This site has a 46 % match | |
Links | 10% | Link anchors should to some degree reflect the contents of a site. This site has a 5 % match | |
Image alt tags | 22% | Image alt tags should to some degree reflect the contents of a site. This site has a 8 % match | |
Bold and italic | 57% | Bold and italic tags should reflect the contents of a site to some degree. This site has a 19 % match | |
Html ratio | 30% | Try to keep the html / text ratio as low as possible. More html means longer loading times. Layout should be handled in a serpate css file | |
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Page errors | 100% | Pages with no errors display significantly faster on most browsers. We detected 0 errors and warnings | |
WordCount | 20% | An ideal page contains between 400 and 600 words.This page contains 4398 words | |
Server response time | 100% | A fast server speeds up a website. This server responds 93.01% faster then average | |
Gzip compression | 30% | This site does not use Gzip compression. Pages may not display as fast as they could | |
Keywords in Domainname | 30% | There are no important keywords in your domain name | |
Keywords in domain path | 100% | There are important keywords in the domain path | |
Structured Data | 100% | Structured data makes it easier for search engines to index your website | |
Inline css | 0% | Do not use inline css declarations. Inline css will slow down the rendering of the website. We detected 116 inline style declarations ( <a style="color:green">) with a size of 2602 bytes | |
Excessive use of the same words | 100% | There is no indication that there are one or more keywords that are used excessively. | |
Frames or iframes | 100% | Perfect, detected not (i)frames on your webpagina | |
Flash | 100% | Perfect, we detected no flash objects on your page | |
Css | 30% | We detected too much (2) CSS files on your page. Css files block the loading of a webpage. | |
Javascript | 100% | Perfect, we did not detect too many blocking JavaScript files | |
Mobile Website | 100% | Perfect, we found a responsive design for mobile users | |
Most important heading | 100% | Perfect, we detected a correct use of the most important (h1) heading! | |
Normalized headings | 40% | We dit not font a normalized heading structure. A heading 2 (h2) for example should be followed by a heading of an equal level (h2), a child heading (h3) or even a aprent heading (h1). |
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en.wikipedia.org images and descriptions
27 images found at en.wikipedia.org Images can improve the user experience for a website by making a pag visually appealing Images can also add extra keyword relevance to a webpage by using alt tags. Images can also slow down a website. If the width and height for a picture is not specified for a browser know in advance how large the image is. A browser must first load the picture and see before it knows how much space should be on the page. Upon reservation In the meantime, the browser can do little but wait. When the height and width for the plate are given in the HTML code, a browser just continues to build for a page while the images load in the background.
http://en.wikipedia.org/static/images/icons/wikipedia.png height: 50 width: 50 description: no alt description found |
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http://en.wikipedia.org/static/images/mobile/copyright/wikipedia-wordmark-en.svg height: height attribute not set width: width attribute not set description: wikipedia |
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http://en.wikipedia.org/static/images/mobile/copyright/wikipedia-tagline-en.svg height: 13 width: 117 description: the free encyclopedia |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/32e64f7f6ef1f8a0eda9cf775fa41f0023c54d4d height: height attribute not set width: width attribute not set description: {\displaystyle {\begin{aligned}\tan \left(\lambda \right)&={\sin \left(\alpha \right)\cos \left(\varepsilon \right)+\tan \left(\delta \right)\sin \left(\varepsilon \right) \over \cos \left(\alpha \right)};\qquad {\begin{cases}\cos \left(\beta \right)\sin \left(\lambda \right)=\cos \left(\delta \right)\sin \left(\alpha \right)\cos \left(\varepsilon \right)+\sin \left(\delta \right)\sin \left(\varepsilon \right);\\\cos \left(\beta \right)\cos \left(\lambda \right)=\cos \left(\delta \right)\cos \left(\alpha \right).\end{cases}}\\\sin \left(\beta \right)&=\sin \left(\delta \right)\cos \left(\varepsilon \right)-\cos \left(\delta \right)\sin \left(\varepsilon \right)\sin \left(\alpha \right)\\[3pt]{\begin{bmatrix}\cos \left(\beta \right)\cos \left(\lambda \right)\\\cos \left(\beta \right)\sin \left(\lambda \right)\\\sin \left(\beta \right)\end{bmatrix}}&={\begin{bmatrix}1&0&0\\0&\cos \left(\varepsilon \right)&\sin \left(\varepsilon \right)\\0&-\sin \left(\varepsilon \right)&\cos \left(\varepsilon \right)\end{bmatrix}}{\begin{bmatrix}\cos \left(\delta \right)\cos \left(\alpha \right)\\\cos \left(\delta \right)\sin \left(\alpha \right)\\\sin \left(\delta \right)\end{bmatrix}}\\[6pt]\tan \left(\alpha \right)&={\sin \left(\lambda \right)\cos \left(\varepsilon \right)-\tan \left(\beta \right)\sin \left(\varepsilon \right) \over \cos \left(\lambda \right)};\qquad {\begin{cases}\cos \left(\delta \right)\sin \left(\alpha \right)=\cos \left(\beta \right)\sin \left(\lambda \right)\cos \left(\varepsilon \right)-\sin \left(\beta \right)\sin \left(\varepsilon \right);\\\cos \left(\delta \right)\cos \left(\alpha \right)=\cos \left(\beta \right)\cos \left(\lambda \right).\end{cases}}\\[3pt]\sin \left(\delta \right)&=\sin \left(\beta \right)\cos \left(\varepsilon \right)+\cos \left(\beta \right)\sin \left(\varepsilon \right)\sin \left(\lambda \right).\\[6pt]{\begin{bmatrix}\cos \left(\delta \right)\cos \left(\alpha \right)\\\cos \left(\delta \right)\sin \left(\alpha \right)\\\sin \left(\delta \right)\end{bmatrix}}&={\begin{bmatrix}1&0&0\\0&\cos \left(\varepsilon \right)&-\sin \left(\varepsilon \right)\\0&\sin \left(\varepsilon \right)&\cos \left(\varepsilon \right)\end{bmatrix}}{\begin{bmatrix}\cos \left(\beta \right)\cos \left(\lambda \right)\\\cos \left(\beta \right)\sin \left(\lambda \right)\\\sin \left(\beta \right)\end{bmatrix}}.\end{aligned}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/24591754e1a4d05bbcb52fd2b752ad2fa281ad42 height: height attribute not set width: width attribute not set description: {\displaystyle {\begin{aligned}\tan \left(a\right)&={\sin \left(h\right) \over \cos \left(h\right)\sin \left(\phi _{\text{o}}\right)-\tan \left(\delta \right)\cos \left(\phi _{\text{o}}\right)};\qquad {\begin{cases}\cos \left(a\right)\sin \left(a\right)=\cos \left(\delta \right)\sin \left(h\right);\\\cos \left(a\right)\cos \left(a\right)=\cos \left(\delta \right)\cos \left(h\right)\sin \left(\phi _{\text{o}}\right)-\sin \left(\delta \right)\cos \left(\phi _{\text{o}}\right)\end{cases}}\\[3pt]\sin \left(a\right)&=\sin \left(\phi _{\text{o}}\right)\sin \left(\delta \right)+\cos \left(\phi _{\text{o}}\right)\cos \left(\delta \right)\cos \left(h\right);\end{aligned}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/d0b38b9e388153fa974a286f72be3bf6906a5fe3 height: height attribute not set width: width attribute not set description: {\displaystyle {\begin{aligned}{\begin{bmatrix}\cos \left(a\right)\cos \left(a\right)\\\cos \left(a\right)\sin \left(a\right)\\\sin \left(a\right)\end{bmatrix}}&={\begin{bmatrix}\sin \left(\phi _{\text{o}}\right)&0&-\cos \left(\phi _{\text{o}}\right)\\0&1&0\\\cos \left(\phi _{\text{o}}\right)&0&\sin \left(\phi _{\text{o}}\right)\end{bmatrix}}{\begin{bmatrix}\cos \left(\delta \right)\cos \left(h\right)\\\cos \left(\delta \right)\sin \left(h\right)\\\sin \left(\delta \right)\end{bmatrix}}\\&={\begin{bmatrix}\sin \left(\phi _{\text{o}}\right)&0&-\cos \left(\phi _{\text{o}}\right)\\0&1&0\\\cos \left(\phi _{\text{o}}\right)&0&\sin \left(\phi _{\text{o}}\right)\end{bmatrix}}{\begin{bmatrix}\cos \left(\theta _{l}\right)&\sin \left(\theta _{l}\right)&0\\\sin \left(\theta _{l}\right)&-\cos \left(\theta _{l}\right)&0\\0&0&1\end{bmatrix}}{\begin{bmatrix}\cos \left(\delta \right)\cos \left(\alpha \right)\\\cos \left(\delta \right)\sin \left(\alpha \right)\\\sin \left(\delta \right)\end{bmatrix}};\\[6pt]\tan \left(h\right)&={\sin \left(a\right) \over \cos \left(a\right)\sin \left(\phi _{\text{o}}\right)+\tan \left(a\right)\cos \left(\phi _{\text{o}}\right)};\qquad {\begin{cases}\cos \left(\delta \right)\sin \left(h\right)=\cos \left(a\right)\sin \left(a\right);\\\cos \left(\delta \right)\cos \left(h\right)=\sin \left(a\right)\cos \left(\phi _{\text{o}}\right)+\cos \left(a\right)\cos \left(a\right)\sin \left(\phi _{\text{o}}\right)\end{cases}}\\[3pt]\sin \left(\delta \right)&=\sin \left(\phi _{\text{o}}\right)\sin \left(a\right)-\cos \left(\phi _{\text{o}}\right)\cos \left(a\right)\cos \left(a\right);\end{aligned}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/e80cd665d08444dadd652d53b0f1bfd9bb35e9c5 height: height attribute not set width: width attribute not set description: {\displaystyle {\begin{aligned}x&=\sin \left(\phi _{\text{o}}\right)\cos \left(a\right)\cos \left(a\right)+\cos \left(\phi _{\text{o}}\right)\sin \left(a\right)\\y&=\cos \left(a\right)\sin \left(a\right)\\[3pt]{\begin{bmatrix}\cos \left(\delta \right)\cos \left(h\right)\\\cos \left(\delta \right)\sin \left(h\right)\\\sin \left(\delta \right)\end{bmatrix}}&={\begin{bmatrix}\sin \left(\phi _{\text{o}}\right)&0&\cos \left(\phi _{\text{o}}\right)\\0&1&0\\-\cos \left(\phi _{\text{o}}\right)&0&\sin \left(\phi _{\text{o}}\right)\end{bmatrix}}{\begin{bmatrix}\cos \left(a\right)\cos \left(a\right)\\\cos \left(a\right)\sin \left(a\right)\\\sin \left(a\right)\end{bmatrix}}\\{\begin{bmatrix}\cos \left(\delta \right)\cos \left(\alpha \right)\\\cos \left(\delta \right)\sin \left(\alpha \right)\\\sin \left(\delta \right)\end{bmatrix}}&={\begin{bmatrix}\cos \left(\theta _{l}\right)&\sin \left(\theta _{l}\right)&0\\\sin \left(\theta _{l}\right)&-\cos \left(\theta _{l}\right)&0\\0&0&1\end{bmatrix}}{\begin{bmatrix}\sin \left(\phi _{\text{o}}\right)&0&\cos \left(\phi _{\text{o}}\right)\\0&1&0\\-\cos \left(\phi _{\text{o}}\right)&0&\sin \left(\phi _{\text{o}}\right)\end{bmatrix}}{\begin{bmatrix}\cos \left(a\right)\cos \left(a\right)\\\cos \left(a\right)\sin \left(a\right)\\\sin \left(a\right)\end{bmatrix}}.\end{aligned}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/7737134f568aa3fa4819f07bc987cc7a38d1f0a1 height: height attribute not set width: width attribute not set description: {\displaystyle \alpha _{\text{g}},\delta _{\text{g}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/209d2070bf725ee618f562e417c381ed52164b65 height: height attribute not set width: width attribute not set description: {\displaystyle l_{\text{ncp}}} |
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https://wikimedia.org/api/rest_v1/media/math/render/svg/22238e19106e46827927d43047ec4a02431da4c5 height: height attribute not set width: width attribute not set description: {\displaystyle \alpha _{g}=192.85948^{\circ }\qquad \delta _{g}=27.12825^{\circ }\qquad l_{\text{ncp}}=122.93192^{\circ }} |
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