HIP 78530 b orbits a young, hot, bright blue star in the Upper Scorpius association.

[1] Between 2000 and 2001, the ADONIS system at the ESO 3.6 m Telescope in Chile detected a faint object in the vicinity of HIP 78530.

[1] The random selection of ninety-one stars in the Upper Scorpius association provided a sample of stars to be observed using the Near Infrared Imager and Spectrometer (NIRI) and Altitude conjugate Adaptive Optics for the Infrared (ALTAIR) adaptive optics system at the Gemini Observatory.

[1] Follow-up imaging took place on July 2, 2009, and August 30, 2010, using the same instruments, as astronomers hoped to reveal this companion object's proper motion, or the rate that it moves over time.

The result suggested not only that the faint object in the image was nearby the star HIP 78530, but that it was a brown dwarf or planet in size.

[1] However, this number is a lower limit, as astronomers have been unable to detect smaller, low-mass planets that fit this scenario.

Additionally, HIP 78530 b orbits its host star at an estimated average distance of 710 AU,[3] which is 710 times the average distance between the Earth and the Sun assuming the brown dwarf has a circular orbit.