Star · Orange · Hercules

Rasalgethi

64 Her

Above the horizon after darkHighest after dark 20:20 · southwest · 38°

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Where is Rasalgethi?

Times for LondonChange city

Look southwest, about 38° up at 20:20 in Hercules. It sinks lower through the evening and sets at 00:36.

From London tonight, Rasalgethi is above the horizon after dark. It’s highest soon after dark, around 20:20, in the southwest at 38°.

At magnitude 3.5 it is visible by eye, even from many towns, when the sky is clear.

This is position and timing only: clouds, haze and light pollution aren’t included.

Rasalgethi looks orange to the eye (color is easier to see in binoculars). Its spectral type is M5I: cool red supergiant (much cooler than the Sun).

A orange point of light, visible even from many towns when it’s clear.

Brighter, and its orange color is easier to see.

Still a point of light: no amateur telescope shows a star’s surface.

What you’re likely to see, not what a space telescope photographs. General guidance from catalog brightness and size, not a forecast for tonight.

Rasalgethi is a star in Hercules, shining at magnitude 3.5. Its spectral type, M5I, marks it as: cool red supergiant (much cooler than the Sun).

Sources: SkyMate; Wikidata (CC0). Positions computed for your place and time with astronomy-engine. Data & Licences