Orbit, mass ratio, and parallax of 99 Herculis

Details Orbit, mass ratio, and parallax of 99 Herculis Orbit, mass ratio, and parallax of 99 Herculis

Feb 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..419k&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, Feb. 1986, p. 419-421.

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5

Astrometry, Binary Stars, Mass Ratios, Stellar Mass, Stellar Orbits, Stellar Parallax, Orbital Elements, Radial Velocity, Stellar Magnitude

Scientific paper

From measures of 131 Allegheny parallax plates, combined with the visual measurements of the system, the authors derive a new orbit, parallax, and mass ratio for 99 Her. They obtain a relative parallax of 0.0660±0.0049, which supersedes the two previous Allegheny determinations. Combining this result with determinations from other observatories, a mean absolute parallax of 0.064 is obtained. With the values of a = 1.077, P = 55.54, and B = 0.355, the authors obtain individual masses of 0.95 and 0.52 M_sun;.

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