## Basic data (System:648)

C1900.0 C2000.0 : 10576+6217 : 110343669+61450372 : : 1.79(V) : K0III ; F

## Identifiers:

 Bayer $\alpha$ UMa BD +62 1161 HD 95689 HIP 54061

## Orbit

Element Value Std. dev. : 16070.7 : 18636.2 : 0.35 : 174. : 2.0 : : -8.7 : : : : : 1.0 : DAO : PUB : 1937MNRAS..98...92J : 4.14021e+08 0 : 0.0109915 0

## Note

This system is A.D.S. 8035 with Delta m close to 3m. Underhill adopted the
orbital elements by H.S. Jones and H.H. Furner (Mon. Not. Roy. Astron. Soc.,
98, 92, 1937) with P=44.0y, T=1865.9. She also assumed their values of e and
omega and derived K and V0 only. The orbital inclination is 161. deg. The
visual orbit by W.D. Heintz (Munchen Veroff., 5, 247, 1963) is now considered
superior to that by Jones and Furner although the predictions of the two orbits
Scarfe (Astrophys. Space Sci., 11, 112, 1971) has shown that the observed
velocities do not agree well with either of these orbits, or even with that
derived by P. Couteau (J. Observateurs, 42, 31, 1959). Visual observers are
hampered by the very close approach of the two stars at periastron. This is
just the time when the radial velocities will be able to give most information,
but the next approach, according to Heintz' values of the elements will be
about the year 2000. All elements should be considered uncertain until then.


## Plot

Encapsulated PostScript file

D.Pourbaix