Star profile
Lambda Andromedae
Variable starWhat is Lambda Andromedae
Lambda Andromedae is a variable yellow giant at 86 light-years, set on the outline of the chained princess. It belongs to the RS Canum Venaticorum family: a starspot-covered surface that makes its light fluctuate in a slow rotational cycle, like an aged, restless Sun. Close enough to us that even its faint flicker reaches our instruments laden with stellar detail, a small breathing surface measured patiently across decades of observation.
Where it is and when to see it
Lambda Andromedae lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October, when it culminates around midnight.
- From London it never sets and culminates about 85° up.
- From New York it culminates about 84° above the horizon.
- From Sydney it culminates about 10° above the horizon.
It can be seen from anywhere north of 44° S.
It ranks no. 7 in brightness among the 81 stars of Andromeda in our catalogue. To find it, start from Alpheratz, the brightest: it lies about 18° away (a fist at arm's length covers about 10°).
The light you see today left it about 86 years ago.
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Astronomical data for Lambda Andromedae
- Constellation
- Andromeda
- Apparent magnitude
- 3.81
- Distance
- 86.1 light years
- Coordinates (J2000)
- RA 354.391° · Dec 46.458°
- Catalogue
- HIP 116584 · HD 222107
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Other stars in Andromeda
Andromeda has 81 stars in Stelvia's catalogue. Here are a few of them.
- MirachBeta Andromedae2.07
- AlpheratzAlpha Andromedae2.07
- AlmachGamma 1 Andromedae2.10
- Delta Andromedae3.27
- Nembus3.59
- Omicron Andromedae3.62
- Mu Andromedae3.86
- Zeta Andromedae4.08