Star profile
24 Ursae Majoris
Variable starWhat is 24 Ursae Majoris
24 Ursae Majoris, also known as DK Ursae Majoris, is a yellow G4 giant about 104 light-years away. It belongs to the RS Canum Venaticorum family of variables: its brightness shifts subtly as rotation drags active starspots across the surface. In roughly 879,000 years it will pass within just 51 light-years of the Sun, a slow but inevitable visit through our galactic neighbourhood.
Where it is and when to see it
24 Ursae Majoris 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 never sets and culminates about 72° up.
- From New York it never sets and culminates about 61° up.
- From Sydney it never rises above the horizon.
It can be seen from anywhere north of 20° S.
It ranks no. 24 in brightness among the 124 stars of Ursa Major in our catalogue. To find it, start from Alioth, the brightest: it lies about 26° away (a fist at arm's length covers about 10°).
The light you see today left it about 100 years ago.
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Astronomical data for 24 Ursae Majoris
- Constellation
- Ursa Major
- Apparent magnitude
- 4.54
- Distance
- 104.2 light years
- Coordinates (J2000)
- RA 143.621° · Dec 69.830°
- Catalogue
- HIP 46977 · HD 82210
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Other stars in Ursa Major
Ursa Major has 124 stars in Stelvia's catalogue. Here are a few of them.
- AliothEpsilon Ursae Majoris1.76
- DubheAlpha Ursae Majoris1.81
- AlkaidEta Ursae Majoris1.85
- Alula AustralisXi Ursae Majoris4.33
- 15 Ursae Majoris4.46
- 26 Ursae Majoris4.47
- Phi Ursae Majoris4.55
- Pi 2 Ursae Majoris4.59