Star profile
70 Ursae Majoris
What is 70 Ursae Majoris
70 Ursae Majoris glows 636 light-years away inside Ursa Major, not among the seven famous stars of the Plough but a little farther south, in a quieter region of the constellation. It is a K-class orange giant with a radius around forty times that of the Sun, an immense surface pouring out hundreds of solar luminosities into the surrounding void. It is drifting steadily toward us at over forty kilometres per second.
Where it is and when to see it
70 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 February, when it culminates around midnight.
- From London it never sets and culminates about 84° up.
- From New York it never sets and culminates about 73° up.
- From Sydney it never rises above the horizon.
It can be seen from anywhere north of 32° S.
It ranks no. 69 in brightness among the 124 stars of Ursa Major in our catalogue. To find it, start from Alioth, the brightest: it lies about 5° away (a fist at arm's length covers about 10°).
The light you see today left it about 640 years ago.
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Astronomical data for 70 Ursae Majoris
- Constellation
- Ursa Major
- Apparent magnitude
- 5.54
- Distance
- 635.9 light years
- Coordinates (J2000)
- RA 185.212° · Dec 57.864°
- Catalogue
- HIP 60212 · HD 107465
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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
- HIP 537815.47
- HIP 446135.48
- HIP 490055.50
- HIP 521365.55
- 59 Ursae Majoris5.56