Z Ursae Majoris

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Database links to Z Ursae Majoris

Star
Z Ursae Majoris

Observation
dates equinox : J2000.0 , epoch : J2000.0

Right ascension

11 ^h 56 ^m 30.23 ^s

+ 57 ° 52 ′ 17.7 ″

Apparent brightness

6.2 to 9.4 mag

Typing

M5 IIIe

Variable star type

SRb

Radial velocity

(−53.0 ± 4.4) km / s

distance

approx. 1000 ly
approx. 400 pc

Proper movement

Rec. Share:

(−7.92 ± 0.51) mas / a

Dec. portion:

(−10.13 ± 0.54) mas / a

Physical Properties

Other names
and catalog entries

Bonn survey	BD + 58 ° 1346
Henry Draper Catalog	HD 103681 [1]
Hipparcos catalog	HIP 58225 [2]
SAO catalog	SAO 28194 [3]
Tycho catalog	TYC 3839-361-1 [4]

Z Ursae Majoris is a semi-regular variable star in the constellation Great Bear .

The American astronomer Edward Skinner King discovered its variability in 1904. Its periodicity is 195 days.

The leading "Z" in the name follows the rules for naming variable stars and states that Z Ursae Majoris is the ninth variable star discovered in the constellation Great Bear.

Web links

Variable Star of the Month March 2000: Z Ursae Majoris ( Memento from August 21, 2006 in the Internet Archive )

Individual evidence