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WikiCards · Card list · Science cards · Equatorial coordinate system
Uncommon card · Science
Equatorial coordinate system, an Uncommon card
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 62
- DEF
- 46
- Power
- 108
- Wikipedia reads a year
- 30,000
Power 108 (ATK + DEF): stronger than 50 % of WikiCards cards.
Equatorial coordinate system quiz: 3 questions
Three questions on the Equatorial coordinate system card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The origin at the centre of Earth means the ______ are geocentric, that is, as seen from the centre of Earth as if it were transparent.
Answer
coordinates. The origin at the centre of Earth means the coordinates are geocentric, that is, as seen from the centre of Earth as if it were transparent. From the Equatorial coordinate system article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Itumeleng Khune. Itumeleng Khune 70 · Branches of physics 65 · Equatorial coordinate system 62 · Sachet 54 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Tadpole. Tadpole 110,000 · Branches of physics 83,000 · Energy level 48,000 · Equatorial coordinate system 30,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It may be implemented in spherical or rectangular coordinates, both defined by an origin at the centre of Earth, a fundamental plane consisting of the projection of Earth's equator onto the celestial sphere, a primary direction towards the March equinox, and a right-handed convention.
- The origin at the centre of Earth means the coordinates are geocentric, that is, as seen from the centre of Earth as if it were transparent.
- The fundamental plane and the primary direction mean that the coordinate system, while aligned with Earth's equator and pole, does not rotate with the Earth, but remains relatively fixed against the background stars.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Equatorial coordinate system article was read about 30,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 62 and blocks with 46: each hit it takes is cut by 18 %.
How to get Equatorial coordinate system
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
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- Harghita CountyUncommon · Society · ATK 61 DEF 47
- Itumeleng KhuneUncommon · Society · ATK 70 DEF 38
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Card lists
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- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Equatorial coordinate system (revision), CC BY-SA 4.0. Photo : ChristianReady, CC BY-SA 4.0, Wikimedia Commons.
