ASTRONOMY 2

THIRD HOUR SESSION “C”

NAME

KEY-C

 

 

 

 

 

ACTIVITY:  Constellation Charts: Part II – Ecliptic, Seasons, Precession

DATE

 

ID#

 

1.  Other than stars, name three other types of celestial objects plotted on the charts.

Galaxies

Clusters

Nebulae

 

2.  Name three constellations found on the ecliptic.

Capricornus, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpius, Sagittarius, and Ophiuchus since it also lies on the ecliptic

 

3. Which constellation does the Sun occupy on the date of __August 25_?

Leo

4. Which constellation will the Sun occupy during the next __Equinox_ ? And for the _Solstice_ that follows this _ Equinox_ , which constellation will the Sun occupy?

Pisces

Taurus or Gemimi

5.  Near what line should you find the Moon or the planets?

Ecliptic

6. Other than the Sun, which very bright stars are  near the meridian at noon  on _June 10_?

Capella

Rigel

7.   What are the Right Ascension and Declination coordinates for the star ____Algol____ in the constellation of __Perseus__ ?

3h 05m (±5m)

+41° (±1°)

 

 

 

8.   What is the name of the star at RA = _2h 20m_ and Dec =__-3°__?  From the chart legends, what type of star is it and what is its magnitude?

Mira

Variable

3

9. If __Mars_ is in opposition on____February 1__, what constellation does it occupy?

Cancer

 

Date

RA

Dec

Date

RA

Dec

 

 

 

March 1

11h      09m   

+09°      59'    

December 16

11h      10m  

+08°      02'  

March 16

10h      48m    

+11°      47'    

January 1

11h      29m   

+06°      34'    

April  1

10h      30m   

+12°      51'     

Janaury 16

11h      39m    

+05°      59'  

April  15

10h      26m  

+12°      38'    

February 1

11h      38m   

+06°      28'    

May 1

10h      32m   

+11°      25'    

February 15

11h      28m  

+07°      52'  

May 16

10h      45m   

+09°      31'    

 

10. The table above list the coordinates of Mars for several months. Plot Mars on the chart above. What type of motion is being exhibited by Mars?

Retrograde

 

 

 

11. Estimate the date of Mars’s opposition from the plot you made in the previous problem.

March 1 to March 16