Orbits MCQ

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• Which of the following coordinate systems has sun as its center?
  ক

  Geocentric-Equatorial System

  খ

  Geocentric-Ecliptic System

  গ

  Heliocentric-Ecliptic System

  ঘ

  Right Ascension-declination System
• Which of the following describes the angle measured between the ascending node and the periapsis?
  ক

  Argument of periapsis

  খ

  Inclination

  গ

  Longitude of the ascending node

  ঘ

  True anomaly
• What is the semi-major axis of an elliptical orbit with perigee and apogee distances of 2500 km and 8000 km respectively?
  ক

  5250 km

  খ

  5000 km

  গ

  4950 km

  ঘ

  5150 km
• What is the eccentricity of a satellite around a planet if the periapsis and apoapsis are at 6,778 km and 10,378 km respectively from the center of the planet?
  ক

  0.7051

  খ

  0.5

  গ

  0.2098

  ঘ

  0.901
• The eccentricity of an asteroid is 0.7. What is the shape of its orbit around the sun?
  ক

  Circular

  খ

  Hyperbolic

  গ

  Parabolic

  ঘ

  Elliptical
• If the standard gravitational parameter of earth, μ is 398,600 km3/s2 and the radius of earth is 6378 km, what is the period of a satellite revolving around earth in a circular orbit 500 kms above the surface of the earth?
  ক

  2,012.2 s

  খ

  5,801.06 s

  গ

  1,156.21 s

  ঘ

  937.267 s
• Which of the following orbit shapes will be formed if a satellite is travelling at exactly the escape velocity of earth?
  ক

  Circular

  খ

  Parabolic

  গ

  Hyperbolic

  ঘ

  Elliptical
• What is the eccentricity of a spacecraft around earth? Given, specific energy is -10.29 km2/s2, specific angular momentum is 10,112 km2/s. The standard gravitational parameter of earth is 398,600 km3/s2.
  ক

  0.478

  খ

  1.45

  গ

  0.691

  ঘ

  0.456
• Given, the semi-major axis and semi-minor axis are 6580 km and 5910 km respectively, what is the eccentricity of the orbit?
  ক

  0.89

  খ

  0.44

  গ

  0.64

  ঘ

  0.25