There Were
Friday, December 7th, 2007 at
1:06 am
On March 21st of a certain year there was a lunar eclipse what were the coordinates of the moon on that day?
Right ascension and declination
PLEASE HELP! 
Thanks!!
@permeative pedagogy, it is a HYPOTHETICAL lunar eclipse.
Declination = 0
Right Ascension = 180 degrees
Remember: right ascension is DEFINED to equal zero as the coordinate of the SUN from Earth on the day of the March Equinox.
For a lunar eclipse, the moon is directly opposite that.
We know the declination needs to be zero, because that is the equator of the Earth projected in to space. The Sun passes through the celestial equator on either equinox, by definition of an equinox. If an eclipse of either kind will occur, so will the Moon.
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