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'The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets'. Archived from the original on 1 August 2017. ^ 'Sixth Catalog of Orbits of Visual Binary Stars'.

CDS/ADC Collection of Electronic Catalogues. 'VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system'. 'Validation of the new Hipparcos reduction'. The light curve varies with several periods, the most prominent being 2.427, 0.7457 and 1.214 days. Low amplitude variability of the brightness of Atlas was tentatively detected in observations by STEREO and clearly detected by Kepler/K2. Although the two stars cannot be resolved, the primary, component Aa1, is calculated to be 1.6 magnitudes brighter than the secondary, component Aa2. At an inclination of 108°, it is not thought to show eclipses. The inner pair have a well-defined orbit with a period of 291 days, a semi-major axis of 13 mas, and an eccentricity of 0.24. A light curve for Atlas, adapted from White et al. In the WDS catalog, there are 8 other stars, ranging from B-I, which have been classed as companions of Atlas. Its mass is estimate to be twice that of the Sun. It is too close to have been assigned a spectral class, but has an apparent magnitude of 6.8, three magnitudes fainter than the combined magnitude of the closer pair. The outer star, component Ab (sometimes component B, such as in CCDM and SIMBAD ), has been resolved at a distance of 0.784 ″ from the unresolved spectroscopic binary. Atlas was a Titan and the father of the Pleiades sisters in Greek mythology.Ītlas is a triple star system, with the inner pair orbiting in under a year and the outer star orbiting in 260 years.

Download the last version for ipod Star Atlas