# Eta Cassiopeiae (Achird)

Eta Cassiopeiae (Achird) is a double star in the constellation Cassiopeia, magnitude 3.5.

A Sun-like star with a fainter, reddish companion. Its components (magnitudes 3.5 and 7.4; spectral types G1 V (yellow) and M (orange-red)) lie 13.6″ apart at PA 329° (predicted for 2027.0 from its 479-year orbit).

## When and where to see it

It is best placed in the evening sky around November, when it crosses the meridian at about 10 pm local time (around midnight in October). It can be seen from everywhere north of 32°S and never sets north of 32°N.

At its highest it stands 82° up from 50°N, 67° up from 35°N, 32° up from the equator, below the horizon from 35°S.

## Facts

- Type: Double star
- Constellation: Cassiopeia
- Designations: Achird, η Cas, 24 Cas, 24 Cassiopeiae, STF 60, HIP 3821
- Magnitude: 3.5
- Position: RA 0h 49.1m, Dec +57° 49′ (J2000)

Open AstroPilot to see when Eta Cassiopeiae (Achird) is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view. https://astropilot.space/object/eta-cassiopeiae