Misplaced Pages

55 Cancri f: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editContent deleted Content addedVisualWikitext
Revision as of 17:36, 13 December 2016 editBender the Bot (talk | contribs)Bots1,008,858 editsm →Discovery: clean up; http→https for The Guardian using AWB← Previous edit Latest revision as of 03:02, 15 November 2024 edit undoCitation bot (talk | contribs)Bots5,441,890 edits Altered template type. Added encyclopedia. Removed parameters. Some additions/deletions were parameter name changes. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | Category:55 Cancri | #UCB_Category 2/6 
(49 intermediate revisions by 32 users not shown)
Line 1: Line 1:
{{Short description|Extrasolar planet in the constellation Cancer}}
{{Use dmy dates|date=July 2013}}
{{Use dmy dates|date=May 2021}}
{{good article}}
{{Infobox planet

| name = 55 Cancri f / Harriot
{{Planetbox begin
| name = 55 Cancri f | symbol =
}}
{{Planetbox image
| image = Artist's concept shows four of the five planets that orbit 55 Cancri, a star much like our own.jpg | image = Artist's concept shows four of the five planets that orbit 55 Cancri, a star much like our own.jpg
| image_size =
| image_alt =
| caption = An artist's impression of 55 Cancri f.<br>The three bright dots near its star are the three innermost planets. | caption = An artist's impression of 55 Cancri f.<br>The three bright dots near its star are the three innermost planets.
| background =
}}
| bgcolour =
{{Planetbox star
| label_width = <!-- DISCOVERY -->
| star = ]
| discoverer = announced by J. Wisdom<br />published by D. Fischer
| constell = ]
| discovery_site = United States
| RA = {{RA|08|52|35.8}}
| discovered = 11 April 2005 (announced)<br />6 November 2007 (published)
| DEC = {{DEC|+28|19|51}}
| discovery_method = ]
| app_mag = 5.95
| discovery_ref = <!-- DESIGNATIONS -->
| dist_ly = 40.3 ± 0.4
| exosolar planets =
| dist_pc = 12.3 ± 0.1
| class = G8V | minorplanet = no
| extrasolarplanet =
| mass = 0.95 ± 0.10
| mpc_name =
| radius = 1.152 ± 0.035
| pronounced =
| temperature = 5373 ± 9.7
| metallicity = 0.29 | named_after =
| age = 7.4–8.7 | alt_names =
| mp_category =
}}
| adjectives = <!-- ORBITAL -->
{{Planetbox orbit
| orbit_ref =
| semimajor = 0.781 ± 0.007<ref name="fischer08">{{cite journal|arxiv=0712.3917 |journal= Astrophysical Journal |title=Five Planets Orbiting 55 Cancri| display-authors=6| author=Debra A. Fischer| author2=Geoffrey W. Marcy| author3=R. Paul Butler| author4=Steven S. Vogt| author5=Greg Laughlin| author6=Gregory W. Henry| author7=David Abouav| author8=Kathryn M. G. Peek| author9=Jason T. Wright| author10=John A. Johnson| author11=Chris McCarthy| author12=Howard Isaacson| date=23 December 2007|bibcode = 2008ApJ...675..790F |doi = 10.1086/525512|volume=675|pages=790–801 }}</ref>
| semimajor_gm = 116.9 | orbit_diagram =
| semimajor_mas = 62.5 | epoch =
| periastron = 0.730 | uncertainty =
| observation_arc =
| periastron_gm = 109.1
| earliest_precovery_date =
| apastron = 0.833
| apastron_gm = 124.6 | apsis = astron
| aphelion = {{convert|0.833|AU|km|abbr=on}}
| perihelion = {{convert|0.730|AU|km|abbr=on}}
| semimajor = {{convert|0.781|±|0.007|AU|km|abbr=on}}<ref name="fischer08">{{cite journal|arxiv=0712.3917 |journal= Astrophysical Journal |title=Five Planets Orbiting 55 Cancri| display-authors=6| author=Debra A. Fischer| author2=Geoffrey W. Marcy| author3=R. Paul Butler| author4=Steven S. Vogt| author5=Greg Laughlin| author6=Gregory W. Henry| author7=David Abouav| author8=Kathryn M. G. Peek| author9=Jason T. Wright| author10=John A. Johnson| author11=Chris McCarthy| author12=Howard Isaacson| date=23 December 2007|bibcode = 2008ApJ...675..790F |doi = 10.1086/525512|volume=675|issue= 1 |pages=790–801 |s2cid= 17083836 }}</ref>
| mean_orbit_radius =
| eccentricity = 0.2 ± 0.2<ref name="fischer08" /> | eccentricity = 0.2 ± 0.2<ref name="fischer08" />
| period = 260.00 ± 1.1<ref name="fischer08" /> | period = 260.00 ± 1.1<ref name="fischer08" /> ]<br>0.7118 ]
| synodic_period =
| period_year = 0.7118
| avg_speed =
| mean_anomaly =
| mean_motion =
| inclination =
| angular_dist =
| asc_node =
| long_periastron =
| time_periastron = 2,450,080.9108 ± 1.1<ref name="fischer08" />
| arg_peri = 181.1 ± 60<ref name="fischer08" /> | arg_peri = 181.1 ± 60<ref name="fischer08" />
| t_peri = 2,450,080.9108 ± 1.1<ref name="fischer08" /> | semi-amplitude = 4.879 ± 0.6<ref name="fischer08" />
| satellite_of =
| semi-amp = 4.879 ± 0.6<ref name="fischer08" />
| satellites =
}}
| star = ]
{{Planetbox character
| allsatellites =
| minimum_mass = 0.144 ± 0.04<ref name="fischer08" />
| tisserand = <!-- PHYS CHARS -->
| minimum_mass_earth = 45.7 ± 12.7<ref name="fischer08" />
| stellar_flux = ~1 | physical_ref =
| dimensions =
| temperature = {{convert|200–300|K|C F}}
| mean_diameter =
}}
| mean_radius =
{{Planetbox discovery
| equatorial_radius =
| discovery_date = 11 April 2005 (announced)<br />6 November 2007 (published)
| polar_radius =
| discoverers = announced by J. Wisdom<br />published by D. Fischer
| flattening =
| discovery_method = ]
| circumference =
| discovery_site = {{flag|United States}}
| surface_area =
| discovery_status = Published
| volume =
}}
| mass =
{{Planetbox catalog
| density =
| names = Harriot, 55 Cancri Af, Rho<sup>1</sup>&nbsp;Cancri&nbsp;f, HD&nbsp;75732&nbsp;f
| surface_grav =
}}
| moment_of_inertia_factor =
{{Planetbox reference
| escape_velocity =
| star = 55+Cnc
| planet = f | rotation =
| sidereal_day =
| rot_velocity =
| axial_tilt =
| right_asc_north_pole =
| declination =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo =
| single_temperature = {{convert|200–300|K|C F}}
| spectral_type =
| magnitude =
| abs_magnitude =
| angular_size =
| family = <!-- ATMOSPHERE -->
| atmosphere_ref =
| atmosphere =
| scale_height =
| surface_pressure =
| atmosphere_composition = <!-- NOTES -->
| note =
}} }}
'''55 Cancri f''' (abbreviated '''55 Cnc f'''), also designated '''Rho<sup>1</sup> Cancri f''' and formally named '''Harriot''' {{IPAc-en|'|h|ær|i|ə|t}},<ref>{{Cite web |url=http://ceadserv1.nku.edu/longa/classes/2009fall/mat305/resources/pronunciation.html |title=Mathematics Pronunciation Guide |access-date=27 April 2019 |archive-date=4 September 2019 |archive-url=https://web.archive.org/web/20190904062001/http://ceadserv1.nku.edu/longa/classes/2009fall/mat305/resources/pronunciation.html |url-status=dead }}</ref> is an ] approximately 41 ]s away from Earth in the ] of ] (the ]). 55 Cancri f is the fourth known planet (in order of distance) from the star ] and the first planet to have been given the designation of "f".<ref name="astrobiology">{{cite web |url=http://astrobiology.nasa.gov/articles/researchers-identify-first-five-planet-extrasolar-system/ |title=Researchers Identify First Five-Planet Extrasolar System |publisher=NASA Astrobiology |date=12 November 2007 |author=Shige Abe |access-date=17 September 2008 |archive-url=https://web.archive.org/web/20080916211923/http://astrobiology.nasa.gov/articles/researchers-identify-first-five-planet-extrasolar-system/ |archive-date=16 September 2008 |url-status=dead }}</ref>
{{Planetbox end}}


==Name==
'''55 Cancri f''' (abbreviated '''55 Cnc f'''), also designated '''Rho<sup>1</sup> Cancri f''' and named '''Harriot''', is an ] approximately 41 ]s away from Earth in the ] of ] (the ]). 55 Cancri f is the fourth known planet (in order of distance) from the star ] and the first planet to have been given the designation of "f".<ref name="astrobiology">{{cite web|url=http://astrobiology.nasa.gov/articles/researchers-identify-first-five-planet-extrasolar-system/ |title=Researchers Identify First Five-Planet Extrasolar System |publisher= NASA Astrobiology |date=12 November 2007|author=Shige Abe |accessdate=17 September 2008| archiveurl= https://web.archive.org/web/20080916211923/http://astrobiology.nasa.gov/articles/researchers-identify-first-five-planet-extrasolar-system/| archivedate= 16 September 2008 <!--DASHBot-->| deadurl= no}}</ref>
In July 2014 the ] launched ], a process for giving proper names to certain exoplanets and their host stars.<ref>. IAU.org. 9 July 2014</ref> The process involved public nomination and voting for the new names.<ref>{{Cite web |url=http://nameexoworlds.iau.org/process |title=NameExoWorlds The Process |access-date=5 September 2015 |archive-date=15 August 2015 |archive-url=https://web.archive.org/web/20150815025117/http://www.nameexoworlds.iau.org/process |url-status=dead }}</ref> In December 2015, the IAU announced the winning name was Harriot for this planet.<ref>, International Astronomical Union, 15 December 2015.</ref> The winning name was submitted by the Royal Netherlands Association for Meteorology and Astronomy of the ]. It honors the astronomer ].<ref>{{Cite web |url=http://nameexoworlds.iau.org/names |title=NameExoWorlds The Approved Names |access-date=27 December 2015 |archive-date=1 February 2018 |archive-url=https://web.archive.org/web/20180201043609/http://nameexoworlds.iau.org/names |url-status=dead }}</ref>

In July 2014 the ] launched a process for giving proper names to certain exoplanets and their host stars.<ref>. IAU.org. 9 July 2014</ref> The process involved public nomination and voting for the new names.<ref></ref> In December 2015, the IAU announced the winning name was Harriot for this planet.<ref>, International Astronomical Union, 15 December 2015.</ref> The winning name was submitted by the Royal Netherlands Association for Meteorology and Astronomy of the ]. It honors the astronomer ].<ref></ref>


== Discovery == == Discovery ==
] ]


The initial presentation of this planet occurred at a meeting of the ] in April 2005,<ref>{{cite journal |author=J. Wisdom |url=http://www.aas.org/publications/baas/v37n2/dda05/29.htm |archiveurl=https://web.archive.org/web/20061216012023/http://www.aas.org/publications/baas/v37n2/dda05/29.htm |archivedate=16 December 2006 |title=A Neptune-sized Planet in the rho<sup>1</sup> Cancri System |accessdate=17 September 2008 |publisher=The American Astronomical Society |date=11 April 2005| journal=DDA 36th Meeting, 10–14 April 2005—Session 5 Posters}}</ref> however it was another two and a half years before the planet was to be published in a peer-reviewed journal.<ref name="fischer08" /> <!-- Unlike the majority of known extrasolar planets, 55 Cancri f was detected by a third party, by reviewing already-published data on the star and analyzing observed changes in its ] (obtained by measuring of the ] of the star's ]). --> It is the first known planet outside our solar system to spend its entire orbit within what astronomers call the "]".<ref name="guardian">{{cite news|url=https://www.theguardian.com/science/2007/nov/07/spaceexploration |title=Could this be Earth's near twin? Introducing planet 55 Cancri f |publisher='']'' |author=Ian Sample, science correspondent |date= 7 November 2007|accessdate=17 October 2008 | location=London| archiveurl= https://web.archive.org/web/20081002080911/http://www.guardian.co.uk/science/2007/nov/07/spaceexploration| archivedate= 2 October 2008 <!--DASHBot-->| deadurl= no}}</ref> <!-- This is just not true and should be amended - The gas giant HD 28185 b was discovered in 2001 and found to reside entirely in the habitable zone of its parent star in 2006 making 55 Cnc f the second planet found to orbit entirely in the habitable zone - The Guardian is incorrect. --> Furthermore, its discovery made ] the first star other than the ] known to have at least five planets. The initial presentation of this planet occurred at a meeting of the ] in April 2005,<ref>{{cite journal |author=J. Wisdom |url=http://www.aas.org/publications/baas/v37n2/dda05/29.htm |archive-url=https://web.archive.org/web/20061216012023/http://www.aas.org/publications/baas/v37n2/dda05/29.htm |archive-date=16 December 2006 |title=A Neptune-sized Planet in the rho<sup>1</sup> Cancri System |access-date=17 September 2008 |publisher=The American Astronomical Society |date=11 April 2005| journal=DDA 36th Meeting, 10–14 April 2005—Session 5 Posters}}</ref> however it was another two and a half years before the planet was to be published in a peer-reviewed journal.<ref name="fischer08" /> <!-- Unlike the majority of known extrasolar planets, 55 Cancri f was detected by a third party, by reviewing already-published data on the star and analyzing observed changes in its ] (obtained by measuring of the ] of the star's ]). --> It is the first known planet outside the Solar System to spend its entire orbit within what astronomers call the "]".<ref name="guardian">{{cite news|url=https://www.theguardian.com/science/2007/nov/07/spaceexploration |title=Could this be Earth's near twin? Introducing planet 55 Cancri f |newspaper=] |first=Ian|last= Sample|date= 7 November 2007|access-date=17 October 2008 | location=London| archive-url= https://web.archive.org/web/20081002080911/http://www.guardian.co.uk/science/2007/nov/07/spaceexploration| archive-date= 2 October 2008 | url-status= live}}</ref> <!-- This is just not true and should be amended - The gas giant HD 28185 b was discovered in 2001 and found to reside entirely in the habitable zone of its parent star in 2006 making 55 Cnc f the second planet found to orbit entirely in the habitable zone - The Guardian is incorrect. --> Furthermore, its discovery made ] the first star other than the ] known to have at least five planets.


==Orbit and mass== ==Orbit and mass==
] (0.72AU).]] ] (0.72AU).]]
55 Cancri f is located about 0.781 ] away from the star and takes 260 days to complete a full orbit.<ref name=exopl>{{cite web |url=http://exoplanet.eu/planet.php?p1=55+Cnc&p2=f |title=Notes for Planet 55 Cnc f |author=Jean Schneider |date=2011 |publisher=] |accessdate=8 October 2011}}</ref> A limitation of the radial velocity method used to detect 55 Cancri f is that only a ] can be obtained, in this case around 0.144 times that of Jupiter, or half the mass of ].<ref name=exopl/> A ] fit to the radial velocity data of 55 Cancri A indicates that the orbit is consistent with being circular, however changing the value in a range between 0 and 0.4 does not significantly alter the ] of the fit, thus a representative eccentricity of 0.2±0.2 was assumed.<ref name="fischer08" /> In a ] model which takes interactions between the planets into account, the eccentricity comes out as 0.0002, almost perfectly circular.<ref name="fischer08" /> 55 Cancri f is located about 0.781 ] away from the star and takes 262 days to complete a full orbit.<ref name=exopl>{{cite encyclopedia |url=https://exoplanet.eu/catalog/55_cnc_f--436/ |title=Notes for Planet 55 Cnc f |author=Jean Schneider |date=2011 |encyclopedia=] |access-date=8 October 2011}}</ref> A limitation of the radial velocity method used to detect 55 Cancri f is that only a ] can be obtained, in this case around 0.144 times that of Jupiter, or half the mass of ].<ref name=exopl/> A ] fit to the radial velocity data of 55 Cancri A indicates that the orbit is consistent with being circular, however changing the value in a range between 0 and 0.4 does not significantly alter the ] of the fit, thus a representative eccentricity of 0.2±0.2 was assumed.<ref name="fischer08" /> In a ] model which takes interactions between the planets into account, the eccentricity comes out as 0.0002, almost perfectly circular.<ref name="fischer08" />


] observations made with the ] suggest that the outer planet ] is inclined at 53° with respect to the plane of the sky.<ref>{{cite journal | author=Han | title=Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions | journal=The ] Letters | volume=548 | issue=1 | pages=L57–L60 | date=2001 | doi=10.1086/318927 | last2=Black | first2=David C. | last3=Gatewood | first3=George|bibcode = 2001ApJ...548L..57H | display-authors=1 }}</ref> The inner planets b and e are inclined at 85°. The inclination of f is unknown. ] observations made with the ] suggest that the outer planet ] is inclined at 53° with respect to the plane of the sky.<ref>{{cite journal | author=Han | title=Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions | journal=The Astrophysical Journal Letters | volume=548 | issue=1 | pages=L57–L60 | date=2001 | doi=10.1086/318927 | last2=Black | first2=David C. | last3=Gatewood | first3=George|bibcode = 2001ApJ...548L..57H | display-authors=1 | doi-access= }}</ref> The inner planets b and e are inclined at 85°. The inclination of f is unknown.


== Characteristics == == Characteristics ==
Since the planet was detected indirectly through observations of its star, properties such as its ], composition and ] are unknown. With a mass half that of ],<ref name=exopl/> 55 Cancri f is likely to be a ] with no solid surface. It orbits in the so-called "]," which means that ] could exist on the surface of a possible moon.<ref name="guardian" /> Since the planet was detected indirectly through observations of its star, properties such as its ], composition and ] are unknown. With a mass half that of ],<ref name=exopl/> 55 Cancri f is likely to be a ] with no solid surface. It orbits in the so-called "]," which means that ] and ] could exist on the surface of a possible moon.<ref name="guardian" />


It is also possible that 55 Cancri f is a "temperate ice giant" or ] due to its orbit and possible hydrogen-rich composition.
It is not known if the composition and appearance is more like Saturn or Neptune.<ref name="astrobiology"/> Based on its temperature, it should be a ] planet, covered in water clouds.{{citation needed|date=May 2012}}


It is not known if the composition and appearance is more like that of Saturn or Neptune.<ref name="astrobiology"/>
== References ==
{{Reflist}}


==External links== ==See also==
* ]
{{Misplaced Pages books|55 Cancri}}
* ]
{{Commons category|55 Cancri f}}
* ]
* ]

==References==
{{Reflist|refs=

}}


==External links==
* {{cite web |url=http://starrymirror.com/5thplanetorbitingstar.htm |title=Astronomers Find Fifth Planet Around 55 Cancri |accessdate=17 September 2008 |author=Ward Glen |date=8 November 2007 |work=The Starry Mirror}}
{{Commonscatinline}}
* {{cite web |url=http://starrymirror.com/5thplanetorbitingstar.htm |title=Astronomers Find Fifth Planet Around 55 Cancri |access-date=17 September 2008 |author=Ward Glen |date=8 November 2007 |work=The Starry Mirror |url-status=dead |archive-url=https://web.archive.org/web/20071110000646/http://starrymirror.com/5thplanetorbitingstar.htm |archive-date=10 November 2007 }}


{{55 Cancri}} {{55 Cancri}}
{{Stars of Cancer}}
{{Portal bar|Astronomy|Stars|Spaceflight|Outer space|Solar System}}
{{Sky|08|52|35.8|+|28|19|51|40900}} {{Sky|08|52|35.8|+|28|19|51|40900}}

{{good article}}


{{DEFAULTSORT:55 Cancri F}} {{DEFAULTSORT:55 Cancri F}}

Latest revision as of 03:02, 15 November 2024

Extrasolar planet in the constellation Cancer

55 Cancri f / Harriot
An artist's impression of 55 Cancri f.
The three bright dots near its star are the three innermost planets.
Discovery
Discovered byannounced by J. Wisdom
published by D. Fischer
Discovery siteUnited States
Discovery date11 April 2005 (announced)
6 November 2007 (published)
Detection methodDoppler spectroscopy
Orbital characteristics
Apastron0.833 AU (124,600,000 km)
Periastron0.730 AU (109,200,000 km)
Semi-major axis0.781 ± 0.007 AU (116,800,000 ± 1,000,000 km)
Eccentricity0.2 ± 0.2
Orbital period (sidereal)260.00 ± 1.1 d
0.7118 y
Time of periastron2,450,080.9108 ± 1.1
Argument of periastron181.1 ± 60
Semi-amplitude4.879 ± 0.6
Star55 Cancri A
Physical characteristics
Temperature200–300 K (−73–27 °C; −100–80 °F)

55 Cancri f (abbreviated 55 Cnc f), also designated Rho Cancri f and formally named Harriot /ˈhæriət/, is an exoplanet approximately 41 light-years away from Earth in the constellation of Cancer (the Crab). 55 Cancri f is the fourth known planet (in order of distance) from the star 55 Cancri and the first planet to have been given the designation of "f".

Name

In July 2014 the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Harriot for this planet. The winning name was submitted by the Royal Netherlands Association for Meteorology and Astronomy of the Netherlands. It honors the astronomer Thomas Harriot.

Discovery

Radial velocity changes over time of 55 Cancri caused by the orbit of 55 Cancri f.

The initial presentation of this planet occurred at a meeting of the American Astronomical Society in April 2005, however it was another two and a half years before the planet was to be published in a peer-reviewed journal. It is the first known planet outside the Solar System to spend its entire orbit within what astronomers call the "habitable zone". Furthermore, its discovery made 55 Cancri the first star other than the Sun known to have at least five planets.

Orbit and mass

55 Cnc f's orbit compared to the orbit of Venus (0.72AU).

55 Cancri f is located about 0.781 AU away from the star and takes 262 days to complete a full orbit. A limitation of the radial velocity method used to detect 55 Cancri f is that only a minimum mass can be obtained, in this case around 0.144 times that of Jupiter, or half the mass of Saturn. A Keplerian fit to the radial velocity data of 55 Cancri A indicates that the orbit is consistent with being circular, however changing the value in a range between 0 and 0.4 does not significantly alter the chi-squared statistic of the fit, thus a representative eccentricity of 0.2±0.2 was assumed. In a Newtonian model which takes interactions between the planets into account, the eccentricity comes out as 0.0002, almost perfectly circular.

Astrometric observations made with the Hubble Space Telescope suggest that the outer planet 55 Cancri d is inclined at 53° with respect to the plane of the sky. The inner planets b and e are inclined at 85°. The inclination of f is unknown.

Characteristics

Since the planet was detected indirectly through observations of its star, properties such as its radius, composition and temperature are unknown. With a mass half that of Saturn, 55 Cancri f is likely to be a gas giant with no solid surface. It orbits in the so-called "habitable zone," which means that liquid water and life could exist on the surface of a possible moon.

It is also possible that 55 Cancri f is a "temperate ice giant" or hycean planet due to its orbit and possible hydrogen-rich composition.

It is not known if the composition and appearance is more like that of Saturn or Neptune.

See also

References

  1. ^ Debra A. Fischer; Geoffrey W. Marcy; R. Paul Butler; Steven S. Vogt; Greg Laughlin; Gregory W. Henry; et al. (23 December 2007). "Five Planets Orbiting 55 Cancri". Astrophysical Journal. 675 (1): 790–801. arXiv:0712.3917. Bibcode:2008ApJ...675..790F. doi:10.1086/525512. S2CID 17083836.
  2. "Mathematics Pronunciation Guide". Archived from the original on 4 September 2019. Retrieved 27 April 2019.
  3. ^ Shige Abe (12 November 2007). "Researchers Identify First Five-Planet Extrasolar System". NASA Astrobiology. Archived from the original on 16 September 2008. Retrieved 17 September 2008.
  4. NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
  5. "NameExoWorlds The Process". Archived from the original on 15 August 2015. Retrieved 5 September 2015.
  6. Final Results of NameExoWorlds Public Vote Released, International Astronomical Union, 15 December 2015.
  7. "NameExoWorlds The Approved Names". Archived from the original on 1 February 2018. Retrieved 27 December 2015.
  8. J. Wisdom (11 April 2005). "A Neptune-sized Planet in the rho Cancri System". DDA 36th Meeting, 10–14 April 2005—Session 5 Posters. The American Astronomical Society. Archived from the original on 16 December 2006. Retrieved 17 September 2008.
  9. ^ Sample, Ian (7 November 2007). "Could this be Earth's near twin? Introducing planet 55 Cancri f". The Guardian. London. Archived from the original on 2 October 2008. Retrieved 17 October 2008.
  10. ^ Jean Schneider (2011). "Notes for Planet 55 Cnc f". Extrasolar Planets Encyclopaedia. Retrieved 8 October 2011.
  11. Han; et al. (2001). "Preliminary Astrometric Masses for Proposed Extrasolar Planetary Companions". The Astrophysical Journal Letters. 548 (1): L57 – L60. Bibcode:2001ApJ...548L..57H. doi:10.1086/318927.

External links

Media related to 55 Cancri f at Wikimedia Commons

The 55 Cancri system
55 Cancri A55 Cancri e55 Cancri b55 Cancri c55 Cancri f55 Cancri d55 Cancri B
See also
binary stars
extrasolar planets
Constellation of Cancer
Stars
Bayer
Flamsteed
Variable
HD
Other
Exoplanets
Star clusters
Nebulae
Galaxies
NGC
Other
Galaxy clusters
Category
Portals:


Categories: