K2-33b (also known by its EPIC designation EPIC 205117205.01) is a very young super-Neptune exoplanet, orbiting the pre-main-sequence star K2-33. It was discovered by NASA's Kepler space telescope on its "Second Light" mission. It is located about 453 light-years (139 parsecs) away from Earth in the constellation of Scorpius.

2024年10月25日 · K2-33 b is a Neptune-like exoplanet that orbits a M-type star. Its mass is 3.7 Jupiters, it takes 5.4 days to complete one orbit of its star, and is 0.0409 AU from its star. Its discovery was announced in 2016.

K2-33b，或稱為EPIC 205117205.01，是一顆極為年輕的超級海王星型太陽系外行星，母恆星是主序前星 K2-33。該行星是由美国国家航空航天局的克卜勒太空望遠鏡K2任務（Second Light，「第二道光」）發現，距離地球約472光年（145秒差距），在天球上位於天蠍座。該行星是 ...

2016年6月19日 · The newfound planet, K2-33b, is a bit larger than Neptune and whips tightly around its star every five days. It is only 5 to 10 million years old, making it one of a very few newborn planets found to date.

2023年6月11日 · K2-33b, shown in this illustration, is one of the youngest exoplanets detected to date using NASA Kepler Space Telescope. It makes a complete orbit around its star in about five days. These two characteristics combined provide exciting new directions for …

K2-33b是一颗位于天蝎座、绕行母恒星K2-33公转周期仅5.4天的最年轻太阳系外行星，被分类为“超级海王星”，距离地球470光年。 天文学家21日宣布，在太阳系外发现1颗最年轻的行星，为行星系统如何形成带来新的见解。

Young planets under extreme UV irradiation. I. Upper atmosphere modelling of the young exoplanet K2-33b. Zodiacal Exoplanets in Time (ZEIT). III. A Short-period Planet Orbiting a Pre-main-sequence Star in the Upper Scorpius OB Association. Detailed information about planet K2-33 b and its parameters.

2022年11月14日 · Here, we present multi-wavelength transit data for the super Neptune-sized exoplanet, K2-33b -- the youngest (~10 Myr) transiting exoplanet to-date. We combined photometric observations of K2-33 covering a total of 33 transits spanning >2 years, taken from K2, MEarth, Hubble, and Spitzer.

2024年4月10日 · In this paper, we present spectroscopic observations and analyses of two planetary transits of K2-33b, which is known to be one of the youngest transiting planets (age $\approx 8-11$ Myr) around a pre-main-sequence M-type star.

2016年6月20日 · Now, a team of Caltech-led researchers have discovered the youngest fully-formed exoplanet ever detected. The planet, K2-33b, at 5 to 10 million years old, is still in its infancy. The first signals of the planet's existence were measured by NASA's Kepler space telescope during its K2 mission.