Consider a star at a distance of 100 light years from the Earth and is moving relative to the Earth at a constant velocity of 70000 km/hr perpendicular to its line of sight from the Earth. What is the change of its angular position on our sky when viewed by us now and by the ancient Egyptian 6000 years ago? Ignore all other effect, e.g., the axial precession of the Earth. (A) 0.24 arcsecond (B) 13 arcminutes (C) 0.5 degree (D) 2.6 degrees (E) 5.0 degrees

Consider a star at a distance of 100 light years from the Earth and is moving relative to the Earth at a constant velocity of 70000 km/hr perpendicular to its line of sight from the Earth. What is the change of its angular position on our sky when viewed by us now and by the ancient Egyptian 6000 years ago? Ignore all other effect, e.g., the axial precession of the Earth. (A) 0.24 arcsecond (B) 13 arcminutes (C) 0.5 degree (D) 2.6 degrees (E) 5.0 degrees