| Discovery | |
|---|---|
| Discovered by | David Lafrenière et al.[1] |
| Discovery site | Gemini Observatory North,  USA[1] |
| Discovery date | Published January 24, 2011[2] |
| Direct imaging[1] | |
| Orbital characteristics | |
| Epoch J2000 | |
| 710 (± 60)[3] AU | |
| ~12000[1] y | |
| Star | HIP 78530 |
| Physical characteristics | |
| 1.83±0.16 RJ[4] | |
| Mass | 23.04 (± 4)[3] MJ |
| -2.55 (± 0.13)[1] g | |
| Temperature | 2800 (± 200)[1] |
HIP 78530 b is an object that is either a planet or a brown dwarf in the orbit of the star HIP 78530. It was observed as early as 2000, but the object was not confirmed as one in orbit of the star HIP 78530 until a direct imaging project photographed the star in 2008. The image caught the attention of the project's science team, so the team followed up on its initial observations. HIP 78530 b orbits a young, hot, bright blue star in the Upper Scorpius association. The planet itself is over twenty-three times more massive than Jupiter, orbiting eighteen times further from its host star than Pluto does from the Sun by the estimates published in its discovery paper. In this predicted orbit, HIP 78530 b completes an orbit every twelve thousand years.[1]
- ^ a b c d e f g Cite error: The named reference
Lafreniere2011was invoked but never defined (see the help page). - ^ Cite error: The named reference
ArXivwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
EPEwas invoked but never defined (see the help page). - ^ Pecaut, Mark J.; Mamajek, Eric E.; Bubar, Eric J. (2012-02-20). "A Revised Age for Upper Scorpius and The Star-Formation History Among the F-Type Members of the Scorpius-Centaurus OB Association". The Astrophysical Journal. 746 (2): 154. arXiv:1112.1695. doi:10.1088/0004-637X/746/2/154. ISSN 0004-637X.