55 Cancri e
55 Cancri e (abbreviated 55 Cnc e, formally named Janssen /ˈdʒænsən/) is an exoplanet in the orbit of its Sun-like host star 55 Cancri A. The mass of the exoplanet is about 8.63 Earth masses and its diameter is about twice that of the Earth, thus classifying it as the first super-Earth discovered around a main sequence star, predating Gliese 876 d by a year. It takes less than 18 hours to complete an orbit and is the innermost-known planet in its planetary system. 55 Cancri e was discovered on 30 August 2004. However, until the 2010 observations and recalculations, this planet had been thought to take about 2.8 days to orbit the star. In October 2012, it was announced that 55 Cancri e could be a carbon planet.
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2016 in science55 Cancri55 Cancri Ae55 Cancri b55 Cancri c55 Cancrie55 Cnc eCHEOPSCarbon planetDidier QuelozDiscoveries of exoplanetsDoraemon: Nobita's Space HeroesExoplanetExoplanet naming conventionExoplanetologyExtraterrestrial atmosphereExtraterrestrial diamondsExtraterrestrial liquid waterGeoffrey MarcyGliese 436 bHD 219134 bHydrogen cyanideJanssenJanssen (exoplanet)Janssen (planet)Kepler-10cList of exoplanets discovered between 2000–2009List of nearest terrestrial exoplanet candidatesList of proper names of exoplanetsList of stars in CancerList of transiting exoplanetsMOST (spacecraft)Michaël GillonMu Arae cNikku MadhusudhanSuper-EarthTRAPPIST-1bTRAPPIST-1cThe Diamond PlanetUltra-short period planet
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exoplanet
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55 Cancri e
55 Cancri e (abbreviated 55 Cnc e, formally named Janssen /ˈdʒænsən/) is an exoplanet in the orbit of its Sun-like host star 55 Cancri A. The mass of the exoplanet is about 8.63 Earth masses and its diameter is about twice that of the Earth, thus classifying it as the first super-Earth discovered around a main sequence star, predating Gliese 876 d by a year. It takes less than 18 hours to complete an orbit and is the innermost-known planet in its planetary system. 55 Cancri e was discovered on 30 August 2004. However, until the 2010 observations and recalculations, this planet had been thought to take about 2.8 days to orbit the star. In October 2012, it was announced that 55 Cancri e could be a carbon planet.
apoapsis (km)
2418997.569219
orbital period (μ)
0.7365416666666667
0.7365474
periapsis (km)
2190112.827048
temperature (K)
has abstract
55 Cancri e (abbreviated 55 Cn ...... net was analyzed successfully.
@en
55 Cancri e (abreviadamente 55 ...... telescópio Zacharias Janssen.
@pt
55 Cancri e (disingkat 55 Cnc ...... uper-Bumi berhasil dianalisis.
@in
55 Cancri e estas ekstersunsis ...... ita la 30-an de aŭgusto, 2004.
@eo
55 Cancri e je exoplaneta v so ...... °C (maximum na denní straně).
@cs
55 Cancri e of Janssen is een ...... se opticien Zacharias Janssen.
@nl
55 Cancri e, abreviat 55 Cnc, ...... punten que és un gegant gasós.
@ca
55 Cancri e, chiamato anche Ja ...... evate tracce di vapor d'acqua.
@it
55 Cancri e, eller Janssen, är ...... på massiv vulkanisk aktivitet.
@sv
55 Рака e (або 55 Cancri e) — ...... дного африканського узбережжя.
@uk
apoapsis (μ)
2.418997569219e+9
Method of discovery
Radial velocity
discovery date
2004-08-30
discoverer
orbital period (s)
6.36372e+4
6.363769536e+4
periapsis (μ)
2.190112827048e+9
temperature (K)
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Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
1,026,136,359
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apsis
astron
@en
arg peri
caption
Artist's impression of 55 Cancri e near its host star
@en
density
discovered
2004-08-30
discoverer
McArthur et al.
@en
discovery method
Radial velocity
@en
discovery site
Texas, United States
@en
eccentricity
inclination
mass
Mean radius
period
63637.69536
semi-amplitude
single temperature
~
@en
surface grav
time periastron
2.44999983643e+6
wikiPageUsesTemplate
subject
hypernym
comment
55 Cancri e (abbreviated 55 Cn ...... ri e could be a carbon planet.
@en
55 Cancri e (abreviadamente 55 ...... hipótese de o 55 Cancri e se
@pt
55 Cancri e (disingkat 55 Cnc ...... anet ini adalah planet karbon.
@in
55 Cancri e estas ekstersunsis ...... ita la 30-an de aŭgusto, 2004.
@eo
55 Cancri e je exoplaneta v so ...... °C (maximum na denní straně).
@cs
55 Cancri e of Janssen is een ...... t bijna de dichtheid van lood.
@nl
55 Cancri e, abreviat 55 Cnc, ...... punten que és un gegant gasós.
@ca
55 Cancri e, chiamato anche Ja ...... nte studiati dagli scienziati.
@it
55 Cancri e, eller Janssen, är ...... mare sin stjärna än Merkurius.
@sv
55 Рака e (або 55 Cancri e) — ...... дного африканського узбережжя.
@uk
label
55 Cancri e
@ca
55 Cancri e
@cs
55 Cancri e
@en
55 Cancri e
@eo
55 Cancri e
@es
55 Cancri e
@fr
55 Cancri e
@in
55 Cancri e
@it
55 Cancri e
@nl
55 Cancri e
@pt
sameAs
wasDerivedFrom
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name
55 Cancri e
@en