Star profile
Psi 3 Aquarii
What is Psi 3 Aquarii
Psi-3 Aquarii is a blue-white visual binary whose surface reaches nearly ten thousand degrees—almost twice the Sun's temperature. The pair contributes some seventy solar luminosities to the night sky, and lives within Aquarius, the ancient constellation pictured pouring water from a tilted urn down toward the Southern Fish. Its combined light travels 262 years through the dark before brushing the human eye, faint but unmistakable.
Where it is and when to see it
Psi 3 Aquarii lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is September, when it culminates around midnight.
- From London it culminates about 29° above the horizon.
- From New York it culminates about 40° above the horizon.
- From Sydney it culminates about 66° above the horizon.
It can be seen from anywhere south of 80° N.
It ranks no. 33 in brightness among the 99 stars of Aquarius in our catalogue. To find it, start from Sadalsuud, the brightest: it lies about 27° away (a fist at arm's length covers about 10°).
The light you see today left it about 260 years ago.
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Astronomical data for Psi 3 Aquarii
- Constellation
- Aquarius
- Apparent magnitude
- 4.99
- Distance
- 261.6 light years
- Coordinates (J2000)
- RA 349.740° · Dec -9.611°
- Catalogue
- HIP 115115 · HD 219832
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Other stars in Aquarius
Aquarius has 99 stars in Stelvia's catalogue. Here are a few of them.
- SadalsuudBeta Aquarii2.90
- SadalmelikAlpha Aquarii2.95
- SkatDelta Aquarii3.27
- 104 Aquarii4.82
- Chi Aquarii4.93
- Omega 1 Aquarii4.97
- SitulaKappa Aquarii5.04
- 25 Aquarii5.10