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Star profile

Nu Geminorum

Hot blue star
3D likeness based on its real data · class B · ~15,000 K

What is Nu Geminorum

Nu Geminorum shines blue at 545 light-years, on the flank of the Twins facing the winter Milky Way. Its B-type spectrum betrays a young, massive, intensely hot star burning through its hydrogen far faster than our own Sun will ever manage. The light reaching us tonight set out before Gutenberg's press had even left the workshops of Mainz, crossing five centuries of human history before settling on a single retina.

Where it is and when to see it

Nu Geminorum lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is December, when it culminates around midnight.

  • From London it culminates about 59° above the horizon.
  • From New York it culminates about 70° above the horizon.
  • From Sydney it culminates about 36° above the horizon.

It can be seen from anywhere north of 70° S.

It ranks no. 16 in brightness among the 74 stars of Gemini in our catalogue. To find it, start from Pollux, the brightest: it lies about 19° away (a fist at arm's length covers about 10°).

The light you see today left it about 540 years ago.

Find it on the sky map

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Leave your signature on Nu Geminorum

Your name and a message go up on the map for everyone to read. Signing is free.

Without a lock, someone else can replace your signature. How the lock works

We'll ask for an email to confirm it's you, no password.

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 Geminorum

Constellation
Gemini
Apparent magnitude
4.13
Distance
544.6 light years
Coordinates (J2000)
RA 97.241° · Dec 20.212°
Catalogue
HIP 30883 · HD 45542

A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.

Other stars in Gemini

Gemini has 74 stars in Stelvia's catalogue. Here are a few of them.

See all 74 stars in Gemini