克卜勒68d(Kepler-68d)是一顆位於天鵝座的太陽系外行星,屬於類木行星。它的質量下限和木星大致相等,和母恆星克卜勒68的距離是1.4天文單位,在母恆星的適居帶內[2]。天文學家以徑向速度法發現該行星[3]。
天文學家以凌日法發現克卜勒68b和克卜勒68c以後使用都卜勒光譜學方式觀測母恆星,發現了克卜勒68d。
- ^ Kepler Discoveries. kepler.nasa.gov. [February 26, 2013]. (原始内容存档于2016-05-11).
- ^ Kepler-68: Three Planets, One With a Density Between That of Earth and Ice Giants: Ronald L. Gilliland, Geoffrey W. Marcy, Jason F. Rowe, Leslie Rogers, Guillermo Torres, Francois Fressin, Eric D. Lopez, Lars A. Buchhave, Joergen Christensen-Dalsgaard, Jean-Michel Desert, Howard Isaacson, Jon M. Jenkins, Jack L. Lissauer, William J. Chaplin, Sarbani Basu, Travis S. Metcalfe, Yvonne Elsworth, Rasmus Handberg, Saskia Hekker, Daniel Huber, Christoffer Karoff, Hans Kjeldsen, Mikkel N. Lund, Mia Lundkvist, Andrea Miglio, David Charbonneau, Eric B. Ford, Jonathan J. Fortney, Michael R. Haas, Andrew W. Howard, Steve B. Howell, Darin Ragozzine, Susan E. Thompson. [2013-03-02]. (原始内容存档于2018-11-22).
- ^ Exoplanet. Planet Kepler-68 d. Exoplanet.eu. [28 February 2013]. (原始内容存档于2014年2月16日).