Star profile
47 Ceti
What is 47 Ceti
47 Ceti is a yellow-white F-type star 122 light-years away, set against the diffuse back of the Whale. Its surface, slightly hotter than the Sun's, lends it a clean tone and a modest naked-eye glimmer at magnitude 5.51. The light settling on the eye tonight set out around the start of the 20th century, when spectroscopy was beginning to sort stars by their chemical fingerprints.
Where it is and when to see it
47 Ceti lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is October, when it culminates around midnight.
- From London it culminates about 25° above the horizon.
- From New York it culminates about 36° above the horizon.
- From Sydney it culminates about 69° above the horizon.
It can be seen from anywhere south of 77° N.
It ranks no. 55 in brightness among the 111 stars of Cetus in our catalogue. To find it, start from Diphda, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 120 years ago.
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Astronomical data for 47 Ceti
- Constellation
- Cetus
- Apparent magnitude
- 5.51
- Distance
- 122.2 light years
- Coordinates (J2000)
- RA 21.715° · Dec -13.057°
- Catalogue
- HIP 6748 · HD 8829
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Other stars in Cetus
Cetus has 111 stars in Stelvia's catalogue. Here are a few of them.
- DiphdaBeta Ceti2.04
- MenkarAlpha Ceti2.54
- Eta Ceti3.46
- HIP 41045.47
- HIP 36075.49
- 67 Ceti5.51
- 80 Ceti5.53
- HIP 149155.55