Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measures of 62 Southern Pairs   We report lucky imaging observations of 62 pairs at mid-southern declinations
sourced from the WDS with separations larger than 4 arc seconds and magnitude
less than 10. The measures comprise separations and PA calibrated against Alpha
Centauri AB and drift scans, presented as weighted means of these two
calibration methods, with formal internal uncertainties \delta\rho = 80 mas and
\delta PA = 0.056(deg). We also compare our measures against 1) extrapolated
historic measures, 2) GAIA DR2 data and 3) measures determined from HIPPARCOS
and GAIA observations. Our best estimate of our bias against these 3 databases
are \rho \approx 10 \pm 30 mas and PA \approx 0.04 \pm 0.08(deg). These formal
uncertainties are consistent with the internal uncertainties of \delta\rho = 80
mas and \delta PA = 0.056(deg). We also report Rectilinear Elements for 61
pairs, Grade 5 Orbital Elements for 5 pairs and suggest 5 pairs as optical
doubles (4 of which are new).

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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: math
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg