Star profile

Rho Geminorum

3D likeness based on its real data · class F · ~6,500 K

What is Rho Geminorum

Rho Geminorum is a relatively nearby star, only 59 light-years away, set north of Castor in the body of the divine twin. Of F type, its hue is a slightly warm white and its brightness modest but steady. It belongs to the spectral family that separates stars like the Sun from the hotter, bluer ones —an intermediate link whose tepid light was already on its way when the twentieth century began.

Where it is and when to see it

Rho 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 January, when it culminates around midnight.

From London it culminates about 70° above the horizon.
From New York it culminates about 81° above the horizon.
From Sydney it culminates about 24° above the horizon.

It can be seen from anywhere north of 58° S.

It ranks no. 18 in brightness among the 74 stars of Gemini in our catalogue. To find it, start from Pollux, the brightest: it lies about 5° away (a fist at arm's length covers about 10°).

The light you see today left it about 59 years ago.

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Astronomical data for Rho Geminorum

Constellation: Gemini
Apparent magnitude: 4.16
Distance: 58.9 light years
Coordinates (J2000): RA 112.278° · Dec 31.785°
Catalogue: HIP 36366 · HD 58946

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Other stars in Gemini

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

See all 74 stars in Gemini