21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 12.3, Problem 12.3ACYU
To determine
The condition in which the Oort cloud objects into the comets as it passes near the sun.
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Students have asked these similar questions
The short-period comets do NOT have randomly oriented orbits because
a.
they are affected by the sun’s gravity.
b.
they are affected by the solar wind.
c.
they formed in the Kuiper belt, a belt-shaped region in the plane of the solar system.
d.
their orbits are altered by the drag of their tails in the solar wind.
e.
they all were originally objects ejected from the asteroid belt.
When far from the Sun, a comet consists only of its
a. nucleus
b. dust tail
c. gas tail
d. coma
2. Comet 1943 I has a period of 512 years and an eccentricity of 0.999914 and an inclination of
22 degrees.
a. What is the comet's semi major axis?
b. What are its perihelion and aphelion distances?
c. What is the most likely source region of this object?
d. What is its tisserand parameter and what does that tell you?
Chapter 12 Solutions
21st Century Astronomy
Ch. 12.1 - Prob. 12.1CYUCh. 12.2 - Prob. 12.2CYUCh. 12.3 - Prob. 12.3ACYUCh. 12.3 - Prob. 12.3BCYUCh. 12.4 - Prob. 12.4CYUCh. 12.5 - Prob. 12.5CYUCh. 12 - Prob. 1QPCh. 12 - Prob. 2QPCh. 12 - Prob. 3QPCh. 12 - Prob. 4QP
Ch. 12 - Prob. 5QPCh. 12 - Prob. 6QPCh. 12 - Prob. 7QPCh. 12 - Prob. 8QPCh. 12 - Prob. 9QPCh. 12 - Prob. 10QPCh. 12 - Prob. 11QPCh. 12 - Prob. 12QPCh. 12 - Prob. 13QPCh. 12 - Prob. 14QPCh. 12 - Prob. 15QPCh. 12 - Prob. 16QPCh. 12 - Prob. 17QPCh. 12 - Prob. 18QPCh. 12 - Prob. 19QPCh. 12 - Prob. 20QPCh. 12 - Prob. 22QPCh. 12 - Prob. 23QPCh. 12 - Prob. 24QPCh. 12 - Prob. 25QPCh. 12 - Prob. 26QPCh. 12 - Prob. 27QPCh. 12 - Prob. 28QPCh. 12 - Prob. 29QPCh. 12 - Prob. 30QPCh. 12 - Prob. 31QPCh. 12 - Prob. 32QPCh. 12 - Prob. 33QPCh. 12 - Prob. 34QPCh. 12 - Prob. 35QPCh. 12 - Prob. 36QPCh. 12 - Prob. 37QPCh. 12 - Prob. 38QPCh. 12 - Prob. 39QPCh. 12 - Prob. 40QPCh. 12 - Prob. 41QPCh. 12 - Prob. 42QPCh. 12 - Prob. 43QPCh. 12 - Prob. 44QP
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- The mass of an average comet’s nucleus is about 1014 kg. If the Oort cloud contains 21012 comet nuclei, what is the mass of the cloud in Earth masses? Compare that with Jupiter’s mass. (Note: Relevant data can be found in Appendix Table A-10.)arrow_forwardShort-period comets like Halley Comet a. return to the Oort Cloud during each of their orbits b. come back again and again at predictable intervals. c. have a long tail visiable during their entire orbit around the Sun d. can never be observed without a telescope e. you can't fool me, the only short-period comet we know is Halleyarrow_forwardThe reason that most moons in our solar system orbit in all sorts of crazy directions is because most moons a. co-formed with their planets b. are the result of major collisions c. have been pulled into these crazy orbits by tidal forces d. are captured asteroids Tidal flexing will occur in a moon whose orbit is a. close to its planet and circular b. far from its planet and circular c. far from its planet and eccentric d. close to its planet and eccentricarrow_forward
- The rings of Uranus were discovered a. during an occultation (an eclipse) of a star. b. during an eclipse of one of the moons by the rings. c. during an eclipse of Uranus by the rings. d. as Uranus and the rings passed behind Jupiter. e. by the Voyager 1 spacecraft.arrow_forwardOvals, spots, and storms do not appear prominently in the atmosphere of Saturn because the a. temperature is too low. b. temperature is too high. c. atmospheric chemistry does not permit their development. d. atmosphere is too dense. e. planet’s ring system interferes with storms.arrow_forward18. From where do comets originate?A. Just outside the orbit of JupiterB. A belt between Jupiter and MarsC. between the orbits of Saturn and UranusD. From the surrounding outer regions of the solar systemarrow_forward
- Chondrites are meteorites that have a. never been heated. b. been heated sufficiently to release volatiles they contained. c. been heated sufficiently to melt the chondrules. d. been completely melted. e. entered Earth’s atmosphere but will be destroyed before reaching the ground.arrow_forwardThe dwarf planet Pluto was discovered in 1930. Since that time, which jovian planet has completed a full revolution around the Sun? a. Jupiter b. Saturn c. Uranus d. Neptune e. More than one of the abovearrow_forwardName Date Use the table to answer questions 13 through 15. NAME DISTANCE FROM AVERAGE ΤΥΡΕ ORBIT DIAMETER SUN (Million Miles) (Earth Days) (Miles) 3,032 TEMPERATURE ('C) Mercury 35 5,800 Terrestrial 88 Venus 67 260 Terrestrial 224 7,521 Earth 93 365 7,926 15 Terrestrial Mars 142 260 Terrestrial 687 4,222 Jupiter 484 2150 Gas 4332 88,846 74,898 31,763 Saturn 887 2170 Gas 10755 Uranus 1,784 2200 Gas 30687 Neptune 2,795 2220 Gas 60190 30,778arrow_forward
- 2. Are there any known satellites of Jupiter that are beyond the Hill sphere of Jupiter? If not, what is the largest ratio r(satellite)/r(Hill), among its satellites? 1/3 Hill Sphere Radius: RHill Rна M2 ЗМ1arrow_forwardWhich of the following about comets is TRUE? a. Cometary orbits always lie close to the ecliptic plane b. Long period comets must originate from well beyond even the Kuiper Belt c. The Oort cloud is the large cloud of gas surrounding a comet nucleus while it is near the Sun d. Tails of comets always lie along the path of the orbitarrow_forward14. Saturn's rings a. were created by its incredibly large gravitational capture of asteroids and comets b. have looked basically the same since they formed along with Saturn c. are continually supplied by impacts into small moons d. were created long ago when tidal forces tore apart a large moonarrow_forward
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