Binary star system in the constellation Telescopium
! style="text-align: center; background-color: #FFFFC0;" colspan="2" | Observation dataEpoch J2000.0      Equinox J2000.0 (ICRS)
! style="text-align:left" | Constellation
! style="text-align:left" | Right ascension
! style="text-align:left" | Declination
! style="text-align:left" | Apparent magnitude (V)
! style="background-color: #FFFFC0; text-align: center;" colspan="2"| Characteristics
! style="text-align:left" | Evolutionary stage
! style="text-align:left" | Spectral type
! style="text-align:left" | B−V 
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HD 179886 (HR 7289) is a binary star located in the southern constellation Telescopium. It has a combined apparent magnitude of 5.37, making it faintly visible to the naked eye if viewed under ideal conditions. The system is situated at a distance of 700 light years but is receding with a heliocentric radial velocity of .
As of 2018, the two stars have a separation of along a position angle of 
The brighter component has a stellar classification of K3 III, indicating that the object is an ageing K-type giant. Models show it to be on the red giant branch, a stage of stellar evolution where the star is fusing hydrogen in a shell around an inert core of helium. It has an angular diameter of , yielding a diameter 37 times that of the Sun at its estimated distance. At present it has 111% the mass of the Sun and radiates at from its enlarged photosphere at an effective temperature of , giving it an orange glow. HD 179886A has a metallicity 141% that of the Sun and spins modestly with a projected rotational velocity of .
References.
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