Galileo did record its position but, because Neptune was just entering its retrograde phase, he did not see its orbital motion an so thought it was a star.
It was properly identified by Johann Gottfried Galle in 1846.
Neptune was discovered on September 23, 1846 by Johan Galle.
september 23,1846 by johan galle
september 23,1846 by johan galle
he used a telescope to discover Neptune
Neptune was discovered by Urbain Le Verrier, John Couch Adams, and Johann Galle
omg y wont it give me the answer
neptune
Neptune
Johann Gottfried Galle did not discover a planet himself. He was the astronomer who, in collaboration with Urbain Le Verrier, first observed the planet Neptune in 1846 based on Le Verrier's calculations.
In Neptune
1989
For the first time ever, a mathematical rather than an observational method was used to discover a planet.