Celestial Coordinates

Arc minutes are divided in smaller parts called...

• hours (arc hours).

• minutes (arc minutes).

• seconds (arc seconds).

• milliseconds (arc milliseconds).

Philadelphia, PA, has a latitude of 40 degrees N. What is the altitude of Polaris in this city?

• 90 degrees

• 73.5 degrees

• 40 degrees

• 50 degrees

Match the term to the correct spot

d

c

b

a

Celestial Equator

Declination

Right Ascension

Ecliptic

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-3

What is the approximate coordinates for star G?

​ (a)   hours, ​ (b)   degrees

• 3

• -40

• 4

• 5

• 40

• -30

Based off of the equatorial coordinate system, what is measured in units of time

• Latitude

• Declination

• Distance

• Right ascension

Based off the equatorial coordinate system, what is measured in degrees?

• Right Ascension

• Distance

• Weight

• Declination

Which star is found near 2hr, +40 degrees?

• G

• C

• D

• E

The equatorial coordinate system uses which two coordinates?

• altitude and azimuth

• latitude and longitude

• right ascension and declination

The horizontal coordinate system uses which two coordinates?

• altitude and azimuth

• latitude and longitude

• right ascension and declination

What is the primary purpose of celestial coordinates in astronomy?

• To measure the distance between stars

• To locate objects in the sky

• To calculate the speed of celestial bodies

• To determine the size of planets