Basic data (System:653)

C1900.0 :11011-2645
C2000.0 :110557570-27171627
Comp. :
Magn. : 5.64(V)
Spect. :B8III-IV ; B8.5V


Identifiers:

Bayer $\chi^2$ HyaCD -26 8342CPD -26 4440HD 96314
HIP 54255


Orbit

ElementValueStd. dev.
Period (d.):2.2677
Primary minimum (xJD-2,400,000.0):39925.545
Eccentricity:0.0
omega primary (deg.):0.0
K1 (km/s):123.3
K2 (km/s):168.9
V0 (km/s):+30.6
sigma residuals primary:
sigma residuals secondary:
#RV primary:
#RV secondary:
Grade:5.0
Contributor:DAO
Status:PUB
Bibcode:1975A&A....44..445A
Derived quantities (on the fly, from the above quantities)
a1sini (km):3.84488e+060
a2sini (km):5.26683e+060
m1sin**3 i (sol.mass):3.401250
m2sin**3 i (sol.mass):2.482970

Note

Andersen's observations superseded those of H. Mauder (Astron. Astrophys., 4,
437, 1970) which were obtained at much lower dispersion. The secondary star is
appreciably fainter than the primary, and only the lines lambda 3933 of Ca II,
and lambda 4481 of Mg II were measured in the secondary spectrum. Great care
was taken in the selection of lines for measurement to avoid lines in which the
two component spectra were likely to be badly blended. The orbit was assumed
circular and the epoch is the time of primary minimum. D.M. Popper (Publ.
Astron. Soc. Pacific, 95, 757, 1983) has published results obtained from Lick
observations. They are very similar to those given in the Catalogue and this
justifies upgrading those to a quality. Photoelectric observations were
obtained by H. Mauder and U. Kohler (Astron. Astrophys., 1, 147, 1969) and
rediscussed by Mauder (loc. cit.). They show a range of variation of about 0.3m
in B. The inclination is about 76 deg. Andersen finds Delta MV=1.37; the
effective temperatures of the two stars are similar.

Plot

Orbit
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