Image via Solar Walk 2 app

Uranus at Opposition on 15th of October

Uranus will be well placed for observation, in the constellation Pisces. It will be visible for much of the night, reaching its highest point in the sky at around midnight local time.

This optimal positioning occurs when Uranus is almost directly opposite the Sun in the sky. Since the Sun reaches its greatest distance below the horizon at midnight, the point opposite to it is highest in the sky at the same time.

At around the same time that Uranus passes opposition, it also makes its closest approach to the Earth — termed its perigee — making it appear at its brightest and largest.

Image via Star Walk 2 app

This happens because when Uranus lies opposite the Sun in the sky, the solar system is lined up so that Uranus, the Earth and the Sun form a straight line with the Earth in the middle, on the same side of the Sun as Uranus.

In practice, however, Uranus orbits much further out in the solar system than the Earth — at an average distance from the Sun of 19.29 times that of the Earth, and so its angular size does not vary much as it cycles between opposition and solar conjunction.

On this occasion, Uranus will lie at a distance of 18.95 AU, and its disk will measure 3.7 arcsec in diameter, shining at magnitude 5.7. Even at its closest approach to the Earth, however, it is not possible to distinguish it as more than a star-like point of light without the aid of a telescope.

Credits: https://in-the-sky.org/news.php?id=20161015_13_100

--

--

--

Point your device at the sky and see what stars, constellations, and satellites you are looking at 🌌✨ https://starwalk.space

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

The Fascinating Mystery of the Mysterious Music Heard on the Moon

Moon in Conjunction With Mercury, Venus, Saturn, Jupiter

Are We Alone?

Suborbital Transit with Hovering

A Full Sap Moon as the Sun Brings Spring, plus Morning Planet Parade and Evening Zodiacal Light!

An Evening Moon, Asteroid Juno Jumps Out, Leonid Meteors at Maximum, and we Tour the Lucky…

Beyond doubt, everything could have been created out of “nothing”

Mooniverse — start building our lives on the Moon

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Star Walk

Star Walk

Point your device at the sky and see what stars, constellations, and satellites you are looking at 🌌✨ https://starwalk.space

More from Medium

Milky Way Galaxy: All You Need To Know

Spider Man? No. But there is a Webb Involved.

The Fermi Paradox: Where Are All the Aliens?

3D illustration of radio telescopes searching for astronomical objects at night.

What Comets Really Are — A Beginner’s Guide

A comet on turqoise background.