Stars

Stars

Color and Temperature

Star color is based on its temperature (hotter stars are blue, while cooler stars are red), and the color/temperature of a star can be classified into stellar classes

Stars

Parallax

Parallax is the apparent shift in position of an object because of a change in the point of view. Closer objects have a larger parallax than farther objects.

Stars

Proper Motion

Proper motion is the change in (x, y) tangential motion of a star, and described in two coordinates: Right Ascension and Declination

Stars

Radial Velocity

A measure of movement towards or away from the observer, radial velocity is just one component of stellar motion that is derived through measurement of the doppler effect.

Stars

Parsecs and Light Years

Parsecs and light years are common measurements of distance to celestial objects, and the former is especially significant for its importance to scientific writing and its relationship with parallax.

Stars

Constellations

The result of countless different cultures naming the same stars, inconsistent star names have necessitated the need for a dependable and systematic method of stellar nomenclature based on the brightness of stars within any given constellation.