Star profile
Pi Arietis
Hot blue starWhat is Pi Arietis
Pi Arietis is a blue main-sequence star of type B6V, surface temperature above 13,000 kelvin and around 538 times the Sun's luminosity. It is also a tight spectroscopic binary whose components circle one another every 3.85 days, too close to be split by any telescope. At about 780 light-years it shines with a blue-white light among the horns of the zodiacal Ram.
Where it is and when to see it
Pi 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 56° above the horizon.
- From New York it culminates about 67° above the horizon.
- From Sydney it culminates about 39° above the horizon.
It can be seen from anywhere north of 73° S.
It ranks no. 18 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 780 years ago.
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for Pi Arietis
- Constellation
- Aries
- Apparent magnitude
- 5.26
- Distance
- 780.4 light years
- Coordinates (J2000)
- RA 42.323° · Dec 17.464°
- Catalogue
- HIP 13165 · HD 17543
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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
- Tau 2 Arietis5.10
- 38 Arietis5.17
- Eta Arietis5.23
- Tau 1 Arietis5.27
- 33 Arietis5.30