Right now, Neptune can be found floating among the dim stars of Capricornus the Sea-Goat. Start by identifying the constellation’s triangular pattern, which looks like a bikini’s bottom half. The star Delta (δ) Capricorni marks the triangle’s northeastern corner. Zero in on it through your binoculars, and then move along the “waist” of the bikini — pass from Delta to Gamma, then stop at 4th-magnitude Iota. Look to the northwest of the star and you should see a turquoise-colored point of light.
Even though it will appear quite dim through binoculars, its color should help it stand out. You’ve found Neptune!