ASTR 1010 LAB 3

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School

Motlow State Community College *

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Course

1010

Subject

Astronomy

Date

Apr 3, 2024

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docx

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Uploaded by AmbassadorGerbilMaster969

LAB 3 KEPLER’S THIRD LAW - ACTIVITIES ASTR 1010 EXERCISE ACTIVITIES S TEP 1 - Start Stellarium. It should be in the default configuration you setup in the first laboratory. If not, repeat the steps in the first laboratory’s document “Stellarium Setup.” You should be viewing to your South and set the program to full screen. 1. From your home location, bring up the Date/Time Window and set the date to 2010/03/01 and time to 06:00:00. 2. Leave the Date/Time Window open and in the upper right hand corner. STEP 2 - Use the Location Window to change the planet from “earth” to "Solar System Observer". 3. Use the Search Window to locate the Sun.  This will place you above the Sun's north pole, unlike Tycho and Kepler who had to observe from the Earth. 4. Zoom in (ctrl + up key) until the Field of View (FOV) is between 0.17 to 0.20°. As you zoom in and out this angle is displayed at the bottom of the screen  The inferior planets and Earth should be visible with their names visible to the upper right of each planet. S TEP 3 INFERIOR PLANETS - While watching Mercury, use the Date/Time Window to increase the day and/or month value until Mercury has made one complete orbit. 5. Recall (or lookup) the number of days in each of the months that have passed and total them.  You can fine tune your answer by adjusting the day value in the Date/Time Window to get the planet closer to its original location and add/subtract the adjustment days. 6. Record the number days for the complete orbit in Table 1. 7. Reset the date to 2010:03:01 and time to 06:00:00 and repeat substeps 7 through 9, for the planet Venus. S TEP 4 SUPERIOR PLANETS - Zoom out about a factor of about 2, until the FOV is about 0.40 to 0.50°. Mars should be visible. 8. Reset the date to 2010:03:01 and time to 06:00:00 and repeat substeps 7 through 9, for the planet Mars.

LAB 3 KEPLER’S THIRD LAW - ACTIVITIES ASTR 1010  You can estimate partial years by eye, or make slight adjustments by changing the month value. For this estimate, counting each month as 1/12 of a year is fine. 9. Zoom out about a factor of about 5, until the FOV is about 01.70 to 02.00° .  Jupiter and Saturn should be visible 10. Reset the date to 2010:03:01 and time to 06:00:00. 11. While watching Jupiter and/or Saturn, use the Date/Time Window to increase the year value until each one has made one complete orbit.  Record the number of years for one complete orbit in Table 1.  You can estimate partial years by eye, or make slight adjustments by changing the month value. For this estimate, counting each month as 1/12 of a year is fine. S TEP 5 – C OMPLETE THE TASKS AND ANSWER THE QUESTIONS ON THE FOLLOWING PAGE . P LEASE SUBMIT ONLY THE FOLLOWING PAGE .

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