Star profile
Nu Horologium
What is Nu Horologium
Nu Horologii harbours a debris disk: a double ring of cold dust at 56 kelvin surrounding the star, a vestige of the process by which rocky bodies might have formed. The inner ring orbits at about 96 astronomical units, the outer ring extends to 410. It is a white A2 star 165 light-years away, in the southern constellation of the Pendulum Clock, drawn by Lacaille in honour of the astronomer's instrument.
Where it is and when to see it
Nu Horologium 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 never rises above the horizon.
- From New York it never rises above the horizon.
- From Sydney it never sets and culminates about 61° up.
It can be seen from anywhere south of 27° N.
It ranks no. 6 in brightness among the 18 stars of Horologium in our catalogue. To find it, start from Alpha Horologium, the brightest: it lies about 24° away (a fist at arm's length covers about 10°).
The light you see today left it about 160 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 Nu Horologium
- Constellation
- Horologium
- Apparent magnitude
- 5.25
- Distance
- 164.6 light years
- Coordinates (J2000)
- RA 42.256° · Dec -62.807°
- Catalogue
- HIP 13141 · HD 17848
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Other stars in Horologium
Horologium has 18 stars in Stelvia's catalogue. Here are a few of them.
- Alpha Horologium3.85
- Delta Horologium4.93
- Beta Horologium4.98
- Mu Horologium5.12
- Zeta Horologium5.21
- Eta Horologium5.30
- HIP 201615.33
- Lambda Horologium5.36