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The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
This list of exoplanets discovered in 2023 is a list of confirmed exoplanets that were first reported in 2023. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information. Name Mass (M J) Radius (R J) Period (days) Semi-major axis (AU) Temp. (K) Discovery method Distance (ly) Host star mass (M ☉) Host star temp. (K ...
An artist's rendition of Kepler-62f, a potentially habitable exoplanet discovered using data transmitted by the Kepler space telescope. The list of exoplanets detected by the Kepler space telescope contains bodies with a wide variety of properties, with significant ranges in orbital distances, masses, radii, composition, habitability, and host star type.
NASA released the draft of the Announcement of Opportunity New Frontiers 5 on January 10, 2023. [44] On August 24, 2023, NASA announced that due to budgetary constraints enacted through the Fiscal Responsibility Act of 2023, the official release of the Announcement of Opportunity for New Frontiers 5 would be delayed to no earlier than 2026. [45]
GJ 1214 b (sometimes Gliese 1214 b, [6] also named Enaiposha since 2023 [2]) is an exoplanet that orbits the star GJ 1214, and was discovered in December 2009. Its parent star is 48 light-years (15 pc) from the Sun, in the constellation Ophiuchus. At the time of its discovery, GJ 1214 b was the most likely known candidate for being an ocean planet.
14 April 2023 Jupiter/Ganymede orbiter [495] Chandrayaan-3: 14 July 2023 Lunar orbiter, lander and rover; first soft landing near the lunar South Pole [496] [497] Luna 25: 10 August 2023 Attempted lunar south pole lander (crashed into Moon) [498] [499] Aditya-L1: 2 September 2023 Sun-observing spacecraft at Sun–Earth L 1 [500] SLIM (LEV-1, LEV-2)
NASA: 13 October 2023 (launch) August 2029 (arrival) orbiter en route Selected for mission #14 of NASA's Discovery Program to explore a metallic asteroid. 2023-157A [49] 1998 KY26: Hayabusa2: JAXA: 2030 flyby en route flyby of a fast rotator asteroid 2014-076A [55] Patroclus and Menoetius: Lucy: NASA: March 2033 flyby en route First flyby of a ...
The coldest and oldest planet directly imaged is Epsilon Indi Ab, which has six times Jupiter's mass, an effective temperature of 275 K, and an age of about 3.5 Ga. This list includes the four members of the multi-planet system that orbit HR 8799 .