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TRAPPIST-1f is an Earth-sized exoplanet, meaning it has a radius close to that of Earth. It has an equilibrium temperature of 218 K (−55 °C; −67 °F). [4] It has a radius of 1.045 R 🜨 and a mass of 1.039 M 🜨. [2]
Currently it is the only object with a nearly polar orbit that is in resonance with a planet. [12] Notably, it is part of a group of objects that orbit the Sun in a highly inclined orbit; the reasons for this unusual orbit are unknown as of August 2016. [13] The orbital characteristics of 2011 KT 19 have been compared to those of 2008 KV 42 (Drac).
For the small outer irregular moons of Uranus, such as Sycorax, which were not discovered by the Voyager 2 flyby, even different NASA web pages, such as the National Space Science Data Center [6] and JPL Solar System Dynamics, [5] give somewhat contradictory size and albedo estimates depending on which research paper is being cited.
The Space Variable Objects Monitor is a small X-ray telescope satellite for studying the explosions of massive stars by analysing the resulting gamma-ray bursts, developed by China National Space Administration (CNSA), Chinese Academy of Sciences (CAS) and the French Space Agency , [45] launched on 22 June 2024 (07:00:00 UTC).
Kepler-186f [2] [3] (also known by its Kepler object of interest designation KOI-571.05) is an Earth-sized exoplanet orbiting within the habitable zone of the red dwarf star Kepler-186, [4] [5] [6] the outermost of five such planets discovered around the star by NASA's Kepler space telescope.
It is the least massive and innermost known planet of the Proxima Centauri system. It is the least massive exoplanet detected with the radial velocity method as of 2022 [update] . Its proximity to the star and short orbital period of 5.1 days suggest that it is likely tidally locked due to strong tidal forces.
The planet, called LHS 3154 b, orbits at about 2.3% of Earth's orbital distance from the sun, circling its star every 3.7 days. It is much closer even than our solar system's innermost planet ...
The space observatory was designed to extend the research conducted by the Advanced Satellite for Cosmology and Astrophysics (ASCA) by investigating the hard X-ray band above 10 keV. The satellite was originally called New X-ray Telescope; [ 5 ] at the time of launch it was called ASTRO-H. [ 6 ] After it was placed in orbit and its solar panels ...