Chapter 2 Flashcards
Local Coordinate system is based off of what?
the location of where the obsever is is at in relation the sky.
Where were constellations created at?
in Mesopotamia (current day Iraq) over 5,000 years ago. Others were added by Babylonian, Egyptian, and Greek astronomers during the classical age.
How many constellations are there?
88 Constellations.
The names of constellations are a translation from ___ to ___.
Greek to Latin. This is because Latin was known to be the scientific language at the time.
Apparent magnitude:
How a star appears to us in the form of brightness.
Hipparchus (190-120 bc) used ____ scale to asses stars brightness and created a catalog of them.
the Magnitude scale.
Lower magnitude=
brighter star
Higher magnitude=
darker star
Zenith:
North Celestial pole.
Precession:
When the Earth rotates is behaves as a spinning top. Earth is NOT a perfect sphere.
