Star profile
Epsilon Arietis
What is Epsilon Arietis
ε Arietis is a binary system of two near-twin white A-type stars, bound in a slow dance some 333 light-years away. She belongs to the Ram, the first zodiacal constellation by tradition, and through a modest telescope her two components can be split and admired as a quiet, elegant double star.
Where it is and when to see it
Epsilon Arietis lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is November, when it culminates around midnight.
- From London it culminates about 60° above the horizon.
- From New York it culminates about 71° above the horizon.
- From Sydney it culminates about 35° above the horizon.
It can be seen from anywhere north of 69° S.
It ranks no. 8 in brightness among the 57 stars of Aries in our catalogue. To find it, start from Hamal, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 330 years ago.
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Astronomical data for Epsilon Arietis
- Constellation
- Aries
- Apparent magnitude
- 4.63
- Distance
- 332.5 light years
- Coordinates (J2000)
- RA 44.803° · Dec 21.340°
- Catalogue
- HIP 13914 · HD 18519
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Other stars in Aries
Aries has 57 stars in Stelvia's catalogue. Here are a few of them.
- HamalAlpha Arietis2.01
- SheratanBeta Arietis2.64
- Bharani3.61
- BoteinDelta Arietis4.35
- HIP 155494.47
- Lilii Borea4.52
- 35 Arietis4.65
- Lambda Arietis4.79