Star · Blue-white · Canis Major

Adhara

21 CMa · HIP 33579

Low after darkLow · south · 7° at 05:17

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Where is Adhara?

Times for LondonChange city

Low in the south, at most 7° up around 05:17 in Canis Major.

Rises: 03:52
Highest: 07:00
Sets: 10:08
Best after dark: 05:17 · 7°

Can I see Adhara tonight?

From London tonight, Adhara stays low while the sky is dark: at best 7° above the south horizon around 05:17. You’ll need a clear, flat view in that direction.

At magnitude 1.5 it is one of the brighter points in the sky, easy to see by eye when it’s clear.

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

What does Adhara look like?

Adhara looks blue-white to the eye. Its spectral type is B1.5II: hot blue-white bright giant (much hotter than the Sun).

Eyes

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

Binoculars

Brighter, and its blue-white color is easier to see.

Telescope

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.

About Adhara

Adhara is a star in Canis Major, shining at magnitude 1.5. Its spectral type, B1.5II, marks it as: hot blue-white bright giant (much hotter than the Sun).

Adhara in Canis Major

Its constellationCanis Major Another starSirius Another starCanopus 3° awayWezen 9° awayMessier 41 GuideStargazing for beginners

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