SOLAR SYSTEM SCIENCE - Lawrence Hall of Science

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I-D. Comet Orbits paper fasteners at foci pencil To draw an ellipse: a. With pen, mark the separation of the foci. b. Stick a fastener through each focus. c. Drape a string loop over the fasteners. d. Pull the string taut with the tip of a pencil and draw the ellipse. e. Label the ellipse (comet, Pluto, Earth, or asteroid) string Keep the string taut as you draw. Foci separations: for comet—10 cm; for Pluto—5 cm; for Earth—0.4 cm; for asteroid—7 cm 28 Global Systems Science — Solar System Science — Chapter II. Comets
III. Asteroids As you know by now, our Solar System is more than just planets and moons. Anything that orbits around the Sun is a part of the Solar System. We have already looked at comets, and now we look at asteroids. 1. Sappho. Open the images sappho_a508.fts and sappho_a533.fts from the image file folder. Click and drag the image windows to move them side by side. The image sappho_a533.fts might appear quite peculiar when first opened. Adjust the Min/Max settings as needed. These images are of the same region of the sky but were taken about 15 minutes apart. One of the objects in the image is an asteroid named Sappho. It appears to be moving relative to the background stars because it is closer to Earth. Select a color palette and adjust min/max until you see enough objects in the image to compare and match patterns. Can you tell which object is Sappho? Question 37. What are the (x,y) coordinates of Sappho? In sappho_a508: In sappho_a533: X= ______ Y= ______ X= ______ Y= ______ Answer Box Can you also find the asteroid Iris in the images iris1.fts and iris2.fts? iris1: X= ______ iris2: X= ______ Y= ______ Y= ______ 2. Hildrun. Open the files Hildrun1.fts and Hildrun2.fts. These images were taken 15 minutes apart. Of the three bright objects, two are stars and one is an asteroid. How can we find the asteroid? Decide which one you think is asteroid Hildrun. It might help if you could compare some distances between the three bright objects, since the distance between the two that are stars would not change. The distances between a star and an asteroid will change. Use the Slice tool in the Data Tools menu to measure the distances between the three bright objects. Compare measurements in Hildrun1.fts to measurements in Hildrun2.fts to determine which object is the asteroid. Solar System Science — Chapter III. Asteroids 29
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Page 3 and 4: Solar System Science Contents I. Th
Page 5 and 6: I. The Moon: Our Closest Neighbor I
Page 7 and 8: 3. Pixels and Coordinates Question
Page 9 and 10: Factor is a mathematical term havin
Page 11 and 12: Barringer Meteor Crater in Arizona
Page 13 and 14: I-C. Moon Measure moon1.fts: 1. Moo
Page 15 and 16: Using the Slice Tool a. Select the
Page 17 and 18: I-E. Moon Phases 1. Observing the M
Page 19 and 20: II. Comets II-A. How Long is a Come
Page 21 and 22: 5. Color Palette Bar. In the “Vie
Page 23 and 24: II-B. Comet Set When we observe the
Page 25 and 26: II-C. Comet Motion In order to dete
Page 27: Question 35. Explain the difference
Page 31 and 32: Question 39. Which object is astero
Page 33 and 34: IV. Planets IV-A. Jupiter and Its M
Page 35 and 36: 3. The radius of Io’s orbit. Open
Page 37 and 38: IV-C. Planet Survey 1. Use your web
Page 39 and 40: 3. Using the Image Processor to mea
Page 41 and 42: B. What is the distance between Tit
Page 43 and 44: Solar System Science — Chapter IV

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