quiz 3 Flashcards
annular eclipse
moon is at apogee (farthest) when it passes between earth and sun
how far is moons orbit tilted
5°
how many total constellations
88
how many zodiac constellations
13
what is the 13th zodiac constellation
ophiuchus
what zodiac isn’t an animal
Libra (scales)
when did the international astronomical union establish constellations
1928
how many constellations did ptolemy record
48
how many constellations did J Bayer record
13
how many constellations did hevelius record
9
how many constellations did NL deLacaille record
14
what are asterisms
new star patterns in the sky made from the old constellations
what are 6 examples of asterisms
big dipper, little dipper, summer triangle, north cross, sickle, great square
circumpolar equation/never see constellations equation
90° - your declination = declination you can see above (this answer negative is the ones you never see)
precession
wobble of the earth