[17] Consequently, the Chinese name for Sigma Draconis itself is 天廚二 (Tiān Chú èr, English: the Second Star of Celestial Kitchen.

[10] It is considered a slightly metal-poor star, meaning that it has a lower proportion of elements with masses greater than helium when compared to the Sun.

[24] As of 2013, no Jupiter-size or larger companion had been detected about the star and there was no indication of excess infrared radiation that would be evidence of circumstellar matter (such as a debris disk).

[10][28] Between 2004 and 2013, extensive radial velocity measurements were gathered on Sigma Draconis using the High Resolution Echelle Spectrometer on the Keck Observatory.

The combined analysis suggests there may be a Uranus-mass planet on a 308-day orbit, though the authors do not yet consider the discovery to be publishable as they have not yet attempted to rule out other non-planetary explanations for the velocity variations.

[29] A 2017 study also using Keck/HIRES data did not find evidence of a planet; while a signal with a 2,600-day period was found, it was attributed to the star's magnetic activity cycle.