If a scientist was trying to classify a star, and he had information on a star's size and brightness, which other factor would be ? (a)asteroids (b)comets (c)meteors (d)meteorites me plz it is 4 my work home school work,

The answer would be A,  asteroids. 

Anyone in circle around the Sun would move marginally between the match of movies. Under the stereoscope, the picture of the body would appear to glide somewhat over the foundation of stars. Third, once a moving body was distinguished, its area would be estimated correctly utilizing a digitizing magnifying lens. The area would be estimated with respect to known star areas.

(B)comets. Comets, unlike all of the other options, generally orbit planetary systems. By watching the deviation away from its traditional orbit, you can tell how much gravity the planet commands, and thus are able to better classify the star.

C. equitable; undue influence