Fourteen Weeks in Descriptive Astronomy |
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Page 75
... INFERIOR PLANET . - An inferior planet is never seen by us in the part of the sky opposite to the sun at the time of observation . It cannot recede from him as much as 90 ° , or the circumference , since it moves in an orbit entirely ...
... INFERIOR PLANET . - An inferior planet is never seen by us in the part of the sky opposite to the sun at the time of observation . It cannot recede from him as much as 90 ° , or the circumference , since it moves in an orbit entirely ...
Page 78
... inferior planet . — An inferior planet presents all the phases of the moon . At superior conjunction , the whole illumined disk is turned to- ward us ; but the planet is lost in the sun's rays : therefore neither Mercury nor Venus ever ...
... inferior planet . — An inferior planet presents all the phases of the moon . At superior conjunction , the whole illumined disk is turned to- ward us ; but the planet is lost in the sun's rays : therefore neither Mercury nor Venus ever ...
Page 319
Joel Dorman Steele. 78. Describe the phases of an inferior planet . Why does an inferior planet have phases ? Define gibbous . 79. Explain the opposition and conjunction of a superior planet . Its retrograde motion . Must a superior ...
Joel Dorman Steele. 78. Describe the phases of an inferior planet . Why does an inferior planet have phases ? Define gibbous . 79. Explain the opposition and conjunction of a superior planet . Its retrograde motion . Must a superior ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac