Star profile
HIP 82171
Hot blue starWhat is HIP 82171
More than twenty-six hundred light years separate this blue B-type giant from the earthbound observer. It dwells in the southern Altar constellation and its light departed when Babylon was falling to Cyrus the Great. What we see is the ancient echo of a vast, hot star, several dozen times more massive than the Sun and thousands of times more luminous.
Where it is and when to see it
HIP 82171 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June, when it culminates around midnight.
- From London it never rises above the horizon.
- From New York it never rises above the horizon.
- From Sydney it never sets and culminates about 66° up.
It can be seen from anywhere south of 32° N.
It ranks no. 19 in brightness among the 43 stars of Ara in our catalogue. To find it, start from Beta Ara, the brightest: it lies about 6° away (a fist at arm's length covers about 10°).
The light you see today left it about 2,700 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 HIP 82171
- Constellation
- Ara
- Apparent magnitude
- 5.55
- Distance
- 2695.9 light years
- Coordinates (J2000)
- RA 251.832° · Dec -58.341°
- Catalogue
- HIP 82171 · HD 150898
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Ara
Ara has 43 stars in Stelvia's catalogue. Here are a few of them.
- Beta Ara2.84
- Alpha Ara2.84
- Zeta Ara3.12
- HIP 853895.28
- HIP 847205.47
- HIP 830575.53
- HIP 817025.57
- HIP 817335.62