Kepler-409b

{{Short description|Exoplanet}}

{{Infobox planet

| name = Kepler-409b

| discovery_method = Transit

| discovered = 2014

| discoverer = Kepler space telescope

| alt_names = KOI-1925, KIC 9955598

| extrasolarplanet = yes

| semimajor = 0.3192 AU

| period = {{val|68.9583216|0.0000039}} d

| inclination = {{val|86.30|0.13}}

| star = Kepler-409

| orbit_ref = {{Cite journal |last1=Bonomo |first1=A. S. |last2=Dumusque |first2=X. |last3=Massa |first3=A. |last4=Mortier |first4=A. |last5=Bongiolatti |first5=R. |last6=Malavolta |first6=L. |last7=Sozzetti |first7=A. |last8=Buchhave |first8=L. A. |last9=Damasso |first9=M. |last10=Haywood |first10=R. D. |last11=Morbidelli |first11=A. |last12=Latham |first12=D. W. |last13=Molinari |first13=E. |last14=Pepe |first14=F. |last15=Poretti |first15=E. |date=September 2023 |title=Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities: No excess of cold Jupiters in small planet systems |journal=Astronomy & Astrophysics |volume=677 |pages=A33 |doi=10.1051/0004-6361/202346211 |issn=0004-6361|doi-access=free |arxiv=2304.05773 |bibcode=2023A&A...677A..33B }}

| physical_ref =

| mean_radius = 1.199 {{Earth radius|link=y}}

| mass = <6 {{Earth mass|link=y}}

| density = <{{val|19|u=g/cm3}}

| single_temperature = {{val|438|7|u=K}}

| eccentricity = <0.69

}}

Kepler-409b is a super-Earth orbiting Kepler-409, a G-type main-sequence star. Its orbital period around the star is 69 days. Kepler-409b has a radius 1.199 times that of Earth and a mass 6 times that of Earth. Its discovery in 2014 was made through the use of the transit detection method. The transit method was performed by the Kepler space telescope.{{cite encyclopedia |date=1995 |title=The Extrasolar Planet Encyclopaedia — Kepler-409b |url=https://exoplanet.eu/catalog/kepler_409_b--2542/ |access-date=11 September 2023 |encyclopedia=Extrasolar Planets Encyclopaedia}}