
Star profile
90 Herculis
What is 90 Herculis
90 Herculis is a K-type orange giant 354 light-years away, in a constellation honouring the Greek hero of the twelve labours. The region is crossed by the solar apex, the point in the sky toward which the Sun travels along its galactic orbit at about 20 km per second. Its coppery light departed while Louis XIV still reigned in France.
Where it is and when to see it
90 Herculis lies in the northern 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 sets and culminates about 79° up.
- From New York it culminates about 89° above the horizon.
- From Sydney it culminates about 16° above the horizon.
It can be seen from anywhere north of 50° S.
It ranks no. 53 in brightness among the 136 stars of Hercules in our catalogue. To find it, start from Kornephoros, the brightest: it lies about 26° away (a fist at arm's length covers about 10°).
The light you see today left it about 350 years ago.
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Astronomical data for 90 Herculis
- Constellation
- Hercules
- Apparent magnitude
- 5.17
- Distance
- 353.8 light years
- Coordinates (J2000)
- RA 268.325° · Dec 40.008°
- Catalogue
- HIP 87563 · HD 163217
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Other stars in Hercules
Hercules has 136 stars in Stelvia's catalogue. Here are a few of them.
- KornephorosBeta Herculis2.78
- RasalgethiAlpha 1 Herculis2.78
- Zeta Herculis2.81
- 107 Herculis5.12
- 70 Herculis5.13
- 43 Herculis5.15
- 45 Herculis5.22
- HIP 808435.24