HIP 41378 d

{{Short description|Extrasolar planet in the constellation Cancer}}

{{Infobox planet

| name = HIP 41378 d

| discovered = June 2016

| discovery_method = Transit

| apsis = astron

| period = 278.3618 ± 0.0005{{cite arXiv|eprint=1911.07355|last1=Santerne|first1=A.|title=An extremely low-density and temperate giant exoplanet|last2=Malavolta|first2=L.|last3=Kosiarek|first3=M. R.|last4=Dai|first4=F.|last5=Dressing|first5=C. D.|last6=Dumusque|first6=X.|last7=Hara|first7=N. C.|last8=Lopez|first8=T. A.|last9=Mortier|first9=A.|last10=Vanderburg|first10=A.|last11=Adibekyan|first11=V.|last12=Armstrong|first12=D. J.|last13=Barrado|first13=D.|last14=Barros|first14=S. C. C.|last15=Bayliss|first15=D.|last16=Berardo|first16=D.|last17=Boisse|first17=I.|last18=Bonomo|first18=A. S.|last19=Bouchy|first19=F.|last20=Brown|first20=D. J. A.|last21=Buchhave|first21=L. A.|last22=Butler|first22=R. P.|last23=Collier Cameron|first23=A.|last24=Cosentino|first24=R.|last25=Crane|first25=J. D.|last26=Crossfield|first26=I. J. M.|last27=Damasso|first27=M.|last28=Deleuil|first28=M. R.|last29=Delgado Mena|first29=E.|last30=Demangeon|first30=O.|display-authors=29|class=astro-ph.EP|year=2019}} d

| semimajor = 0.88 ± 0.01 au

| star = HIP 41378{{cite web

| url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=HIP+41378+d&type=CONFIRMED_PLANET

| title=HIP 41378 d CONFIRMED PLANET OVERVIEW PAGE

| work=NASA Exoplanet Archive

| access-date=2016-07-08

}}

| mean_radius = {{val|3.54|0.06}} {{Earth_radius|link=y}}

| mass = {{val|4.6||p=<}} {{Earth_mass|link=y}}

}}

HIP 41378 d (also known as EPIC 211311380 d) is an exoplanet orbiting around the F-type star HIP 41378. It has a radius about 3.5 times that of Earth. Planetary orbit is significantly inclined to the equatorial plane of the parent star, misalignment been equal to 57.1{{±|26.4|17.9}}°.{{citation|arxiv=2210.14125|year=2022|title=Rossiter-Mc Laughlin detection of the 9-month period transiting exoplanet HIP41378 D|doi=10.1051/0004-6361/202244182 |last1=Grouffal |first1=S. |last2=Santerne |first2=A. |last3=Bourrier |first3=V. |last4=Dumusque |first4=X. |last5=Triaud |first5=A. H. M. J. |last6=Malavolta |first6=L. |last7=Kunovac |first7=V. |last8=Armstrong |first8=D. J. |last9=Attia |first9=O. |last10=Barros |first10=S. C. C. |last11=Boisse |first11=I. |last12=Deleuil |first12=M. |last13=Demangeon |first13=O. D. S. |last14=Dressing |first14=C. D. |last15=Figueira |first15=P. |last16=Lillo-Box |first16=J. |last17=Mortier |first17=A. |last18=Nardiello |first18=D. |last19=Santos |first19=N. C. |last20=Sousa |first20=S. G. |journal=Astronomy & Astrophysics |volume=668 |pages=A172 |s2cid=253107437 }}