Tag

Retrograde Orbit

All articles tagged with #retrograde orbit

science28 days ago•119 min saved

Sub-Neptune GJ 3090 b found on a retrograde, highly tilted orbit around a red dwarf

Astronomers measured the orbital tilt of GJ 3090 b and found the 2.2‑Earth‑radius, 4.5‑Earth‑mass sub‑Neptune orbits its red dwarf host in the opposite direction to the star’s spin, with a spin–orbit angle (Psi) of about 136°. The result, reported Sept. 21 in Astronomy & Astrophysics, was obtained using the NIRPS spectrograph at La Silla Observatory and is surprising because no massive companion is detected to explain the misalignment.

via Space|

#exoplanets #gj-3090-b #nirps

science1 year ago•4 min saved

Scientists Discover Retrograde Orbiting Planet, Challenging Astronomy

Astronomers have confirmed a planet in the nu Octantis binary star system orbiting in a retrograde direction, challenging existing theories of planetary formation and suggesting the possibility of second-generation planets formed from material expelled by a white dwarf star. This discovery, made using high-precision radial velocity data, opens new avenues for understanding planetary system evolution in complex environments.

via The Daily Galaxy|

#binary-star-system #nu-octantis #planet-discovery

science1 year ago•5 min saved

Astronomers Find a Planet Orbiting in the Opposite Direction

Astronomers confirmed the existence of a rare retrograde-orbiting planet in the nu Octantis binary system, which is likely a second-generation planet formed from material ejected by the evolved white dwarf companion, challenging traditional planet formation theories.

via SciTechDaily|

#binary-star-system #exoplanet #planet-formation

astronomy3 years ago•3 min saved

Unusual Exoplanet Discoveries: Defying Physics and Witnessing Birth.

The planetary system WASP-131 has a planet, 131b, with an unusual orbit that is tilted about 160 degrees from the rotational plane of the star, meaning that it is in a high, almost polar retrograde orbit. The mechanism behind the odd orbit isn’t clear, but it does follow a pattern seen with many hot gas exoplanets. About a quarter of them have significantly tilted orbits. One possibility is a process known as the Kozai effect, which is more pronounced with smaller planets, and another is a magnetic interaction between the planet and the protoplanetary disk early in its formation.

via Inverse|

#astronomy #exoplanets #kozai-effect