Orbits for five southern visual binaries

Details Orbits for five southern visual binaries Orbits for five southern visual binaries

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...384..171a&link_type=abstract

Astronomy and Astrophysics, v.384, p.171-179 (2002)

Astronomy and Astrophysics

Astrophysics

8

Astrometry, Binaries: Close, Binaries: Visual, Techniques: Interferometric

Scientific paper

First orbits have been calculated for the visual binaries WDS 00090-5400, 01061-4643, 05248-5219 and 08447-5443 (Alzner & Argyle \cite{Alz00}; Argyle & Alzner \cite{Arg01}). The current period for the orbit of WDS 18068-4325 (Wierzbinski \cite{Wrz58}) is too short to represent recent observations. The period has been lengthened to 450 years (Alzner & Argyle \cite{Alz01}). For 00090-5400 the period is 221 years with a moderate eccentricity; 01061-4643 is currently near periastron but is underobserved; 05248-5219 has passed periastron but there have been no observations since 1993. The visual component of WDS 08447-5443 (= delta Vel), which is not the same as the eclipsing component recently discovered by Otero (\cite{Otr00a}), has an unexpectedly short period.

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