Star profile

HIP 109102

3D likeness based on its real data · class K · ~4,200 K

What is HIP 109102

In the small constellation of Lacerta shines this orange K-type giant, whose light has traveled more than six hundred years to reach us. It set out around the fourteenth century, when the Black Death was sweeping across Europe and rewriting the history of the continent. Far cooler and larger than the Sun, it belongs to that lineage of aged stars that have left hydrogen fusion behind and swollen into amber-toned giants —quiet sentinels in the discreet corners of the northern sky.

Where it is and when to see it

HIP 109102 lies in the northern 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 sets and culminates about 84° up.
From New York it culminates about 86° above the horizon.
From Sydney it culminates about 11° above the horizon.

It can be seen from anywhere north of 45° S.

It ranks no. 14 in brightness among the 36 stars of Lacerta in our catalogue. To find it, start from Alpha Lacerta, the brightest: it lies about 7° away (a fist at arm's length covers about 10°).

The light you see today left it about 610 years ago.

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Astronomical data for HIP 109102

Constellation: Lacerta
Apparent magnitude: 5.09
Distance: 608.6 light years
Coordinates (J2000): RA 331.508° · Dec 45.014°
Catalogue: HIP 109102 · HD 209945

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Other stars in Lacerta

Lacerta has 36 stars in Stelvia's catalogue. Here are a few of them.

See all 36 stars in Lacerta