What is the altitude of the noon sun (degrees) for autumnal and vernal equinox, and winter and summer solstice? the latitudes are equator, tropic of cancer, tropic of capricorn, and new york.

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.