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Binary star system in the constellation Centaurus
Rho Centauri is a binary star system in the southern constellation of Centaurus. Its name is a Bayer designation that is Latinized from ρ Centauri, and
Rho_Centauri
Nearest star to the Solar System
Proxima Centauri is the nearest star to Earth after the Sun, located 4.25 light-years (1.3 parsecs) away in the southern constellation of Centaurus. Discovered
Proxima_Centauri
Nearest OB association to Earth
central group, Acrux, Mimosa, Delta, Epsilon and Rho Centauri. Other easily observed stars include Gamma Centauri, Alpha and Beta Muscae. However, some of these
Scorpius–Centaurus association
Scorpius–Centaurus_association
Observation in physical cosmology
{\begin{aligned}\rho _{c}&={\frac {3H_{0}^{2}}{8\pi G}};\\\Omega _{m}&\equiv {\frac {\rho _{m_{0}}}{\rho _{c}}}={\frac {8\pi G}{3H_{0}^{2}}}\rho _{m_{0}};\end{aligned}}}
Hubble's_law
Pattern of stars recognized on Earth's night sky
objects), and with the first-magnitude stars Alpha Centauri (the closest star to the Sun) and Beta Centauri pointing at the cross, distinguishing the cross
Asterism_(astronomy)
Star in the constellation Centaurus
V766 Centauri, based on Corben's 1966 catalogue. At the time, it was considered a "cool S Doradus variable", a class including stars such as Rho Cassiopeiae
HR_5171
Script used to write the Greek language
the brightest star in the constellation of Centaurus is known as Alpha Centauri. For historical reasons, the Greek designations of some constellations
Greek_alphabet
How large a sphere or circle appears
angular diameter of the Sun is also about 250,000 times that of Alpha Centauri A (it has about the same diameter and the distance is 250,000 times as
Angular_diameter
Virginis Binary star system Slightly variable 3.386 3.38 Nu Centauri Binary star system 3.39 3.30 Rho Persei Star 3.39 Meissa Double star 3.408 Beta Pavonis
List of brightest natural objects in the sky
List_of_brightest_natural_objects_in_the_sky
Constellation straddling the celestial equator
Solar System (the only stars closer are the Alpha Centauri binary star system and Proxima Centauri), lies in Ophiuchus. It is located to the left of β
Ophiuchus
Class of massive star with a spectral type of A to K
pseudo-photospheres. Rho Cassiopeiae V509 Cassiopeiae Omicron1 Centauri R Puppis IRC+10420 (V1302 Aql) IRAS 18357-0604 V766 Centauri (= HR 5171A) HD 179821
Yellow_hypergiant
Planetary system consisting of the Sun and objects orbiting it
called the Local Cloud. The closest star to the Solar System, Proxima Centauri, is 269,000 AU (4.25 ly) away. Both are within the Local Bubble, a relatively
Solar_System
Situation in which an astronomical object's orbital period matches its rotational period
with Earth is unknown. The exoplanet Proxima Centauri b discovered in 2016 which orbits around Proxima Centauri, is almost certainly tidally locked, expressing
Tidal_locking
Star naming system
in southern constellations have uppercase letter designations, like B Centauri and G Scorpii. These letters were assigned by later astronomers, notably
Bayer_designation
Cosmological phenomenon
{\displaystyle \rho _{c}={\frac {3H^{2}}{8{\pi }G}}} and the density parameter Ω = ρ ρ c {\displaystyle \Omega ={\frac {\rho }{\rho _{c}}}} The Hubble
Accelerating expansion of the universe
Accelerating_expansion_of_the_universe
Centauri 450.8 ± 0.9 Centaurus K5 IVe Li 12.2–15.6 HD 100655 (Formosa) 451 ± 2 G9 III 6.45 Rho Ophiuchi A 451±12 Ophiuchus B2/3V 4.63 Member of Rho Ophiuchi
List of star systems within 450–500 light-years
List_of_star_systems_within_450–500_light-years
Group of stars on the celestial sphere
the Llama are Alpha and Beta Centauri. Great Rift (astronomy) Cygnus Rift Serpens–Aquila Rift Dark Horse (astronomy) Rho Ophiuchi cloud complex Emu in
Constellation
Multiple star system in the constellation Puppis
This is comparable to the ~15000 AU separation between Alpha Centauri AB and Proxima Centauri; such wide separations between components are relatively rare
HD_41742_and_HD_41700
± 6 Antlia K4III 4.25 PDS 70 (V1032 Centauri) 366.6 ± 0.8 K7 12 Has one confirmed exoplanet (PDS 70b). J Centauri 367 ± 5 Centaurus B3V 4.505 Kappa Gruis
List of star systems within 350–400 light-years
List_of_star_systems_within_350–400_light-years
Star at the centre of the Solar System
triple star system Alpha Centauri, which is about 4.4 light-years away and may be in the Local Bubble's G-Cloud. Alpha Centauri A and B are a closely tied
Sun
Detecting planets located outside the Solar System
elements". Alpha Centauri Bb: On 16 October 2012, the discovery was announced of an Earth-mass planet in orbit around Alpha Centauri B. The discovery
Discoveries_of_exoplanets
Shock wave caused by blowing stellar wind
c_{s}^{2}=\gamma p/\rho } where γ {\displaystyle \gamma } is the ratio of specific heats, p {\displaystyle p} is the pressure, and ρ {\displaystyle \rho } is the
Bow_shock
Comparison of a wide range of lengths
J318.5–22 – a rogue planetary-mass object 215 Mm – diameter of Proxima Centauri, the nearest star to the Solar System 257 Mm – diameter of TrES-4b, one
Orders_of_magnitude_(length)
Rare star with tremendous luminosity and high rates of mass loss by stellar winds
18357-0604 IRC+10420 (V1302 Aql) Omicron1 Centauri Rho Cassiopeiae V382 Carinae V509 Cassiopeiae Phi Cassiopeiae V810 Centauri A V1427 Aquilae R Puppis RSGC1-F15
Hypergiant
Measure of observed changes in the apparent locations of stars
Barnard's Star, about 6 light-years away. After the Sun and the Alpha Centauri system, it is the nearest known star. Being a red dwarf with an apparent
Proper_motion
Time an astronomical object takes to complete one orbit around another object
3 π G ρ {\displaystyle T={\sqrt {{\frac {a^{3}}{r^{3}}}{\frac {3\pi }{G\rho }}}}} where: r is the sphere's radius a is the orbit's semi-major axis, G
Orbital_period
All of space observable from the Earth at the present
the value for ρ c {\displaystyle \rho _{\text{c}}} critical density, is: ρ c = 3 H 2 8 π G , {\displaystyle \rho _{\text{c}}={\frac {3H^{2}}{8\pi G}}
Observable_universe
Proposed lightweight radiator
a^{2})\sigma FT^{4}=-c\rho {\frac {4\pi a^{3}}{3}}{\frac {dT}{dt}}} where c {\displaystyle c} is the specific heat capacity, ρ {\displaystyle \rho } is the density
Liquid_droplet_radiator
Proposed spacecraft propulsion method
Alpha Centauri is a proton number density n i {\displaystyle n_{i}} of 0.1 protons per cm3 corresponding to ρ i m ≈ 10 − 22 {\displaystyle \rho _{im}\approx
Magnetic_sail
List of systems with multiple planets
are listed below according to the star's distance from Earth. Proxima Centauri, the closest star to the Solar System, has at least two planets (the confirmed
List of multiplanetary systems
List_of_multiplanetary_systems
Group of stars
brightest globular clusters are visible to the naked eye; the brightest, Omega Centauri, was observed in antiquity and catalogued as a star, before the telescopic
Star_cluster
F8V Eta Centauri 306 ± 6 Centaurus B1.5 Vne +2.35 YSES 1 (TYC 8998-760-1) 307.3 ± 0.3 K3IV 11.19 Has two confirmed exoplanet (YSES-1b & c). Rho Persei
List of star systems within 300–350 light-years
List_of_star_systems_within_300–350_light-years
Kervella, P.; Thévenin, F.; Lovis, C. (2017-02-01). "Proxima's orbit around α Centauri". Astronomy and Astrophysics. 598: L7. arXiv:1611.03495. Bibcode:2017A&A
List of nearest stars by spectral type
List_of_nearest_stars_by_spectral_type
Constellation in the northern celestial hemisphere
and the fifth-brightest star in all, surpassed only by Arcturus, Alpha Centauri, Canopus, and Sirius. Vega was the pole star in the year 12,000 BCE, and
Lyra
Meaning Arabic name Scientific star name Hadar Ḥaḍār Settlement حضار Beta Centauri Hamal Rā's al-Ḥamal (head of) the Ram رأس الحمل Alpha Arietis Heka al-Haqʿah
List_of_Arabic_star_names
Astrophysical phenomenon
of the Regor or Gamma Velorum system. Mimosa, Acrux and Hadar or Beta Centauri, three bright star systems in the southern constellation of Crux and Centaurus
Supernova
Bibcode:2008MNRAS.384..173F. doi:10.1111/j.1365-2966.2007.12671.x. ISSN 0035-8711. "Rho Pup". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved December
List_of_nearest_giant_stars
Classification of stars based on spectral properties
giants and supergiants, such as Arcturus, whereas orange dwarfs, like Alpha Centauri B, are main-sequence stars. They have extremely weak hydrogen lines, if
Stellar_classification
Constellation in the southern celestial hemisphere
and 26 times more luminous. A line drawn between Alpha Hydri and Beta Centauri is bisected by the south celestial pole. In the southeastern corner of
Hydrus
Main sequence II Beta Centauri Aa (Hadar) 14h 03m 49.40535s −60° 22′ 22.9266″ Centaurus 361 ± 2 B1 III Blue giant II Beta Centauri Ab (Hadar) 14h 03m 49
List_of_supernova_candidates
Substance providing scientific evidence of past or present life
Criterion-system of exobiology," by Joshua Lederberg (1965). In 1973, Joon H. Rho used the term "biomarker" in his paper, "A search for porphyrin biomarkers
Biosignature
Constellation in the southern celestial hemisphere
explorer and astronomer Nicolas Louis de Lacaille labelled them Alpha to Rho in 1756, but omitted Omicron and Xi, and labelled a pair of stars close together
Tucana
Coupé Canguro 1964 Coupé Carabo 1968 Coupé Castagna Vittoria 1995 Coupé Centauri Roadster Coupé Dardo 1998 Roadster Disco Volante 2013-2017 Coupé, Spyder
List_of_sports_cars
Planet not gravitationally bound to a star
about Earth being artificially moved from the Solar System to the Alpha Centauri system Gemini Home Entertainment (2019–present) – horror anthology web
Rogue_planet
60.7 ± 2.2 KV WISE 2301+0216 60.7 T6.5 Gliese 254 60.8 ± 2.0 KV Theta Centauri (Menkent)$ 60.9 ± 0.9 Centaurus 14h 06m 40.94752s −36° 22′ 11.8371″ K0III
List of star systems within 60–65 light-years
List_of_star_systems_within_60–65_light-years
G5 III 3.38 + 7.5 B F0 V C F5 HD 166348 130 Corona Australis* K6V Gamma Centauri (Muhlifain) A 130 ± 1 Centaurus 12h 41m 31.04008s −48° 57′ 35.5375″ A1IV
List of star systems within 100–150 light-years
List_of_star_systems_within_100–150_light-years
Type of star
Herculis 3.90 B5IV 1.25 94 Nu Eridani 3.92 B2III 207 Mu Eridani 4.00 B5IV 160 Rho Lupi 4.05 B5V 0.45 97 HD 105382 4.47 B6IIIe 1.30 134 Tau8 Eridani 4.63 B5V
Slowly_pulsating_B-type_star
NASA satellite of the Explorer program
massive star Puppis A, which is a supernova remnant The Rho Ophiuchi cloud complex Lambda Centauri nebula, a star-forming region in the Milky Way The Helix
Wide-field Infrared Survey Explorer
Wide-field_Infrared_Survey_Explorer
Substellar object
the Sun. Luhman 16 is the third closest system to the Sun after Alpha Centauri and Barnard's Star. In the 1960s Shiv Kumar theorized the existence of
Brown_dwarf
Star whose brightness fluctuates, as seen from Earth
or less. Several nearby red dwarfs are flare stars, including Proxima Centauri and Wolf 359. A superflare is a class of energetic, short duration flare
Variable_star
Branch of astronomy
{g}}}={3L_{\odot }Q_{\rm {PR}} \over {16\pi GMc\rho s}}=5.7\times 10^{-4}{Q_{\rm {PR}} \over {\rho s}}} where ρ {\displaystyle \rho } is the density and s {\displaystyle
Dust_astronomy
American gay collegiate fraternity
Arizona Active Alpha Centauri Alumni Association Washington, D.C. Active Alpha Psi Alumni Association Kent, Ohio Active Alpha Rho Alumni Association State
Delta_Lambda_Phi
1079 58.5 ± 0.8 KV Gliese 787 58.5 ± 1.4 KV Gliese 418 58.5 ± 1.4 KV Iota Centauri (Alhakim/Kulou)$ 58.6 ± 0.8 Centaurus 13h 20m 35.81737s −36° 42′ 44.2447″
List of star systems within 55–60 light-years
List_of_star_systems_within_55–60_light-years
0.007 14.66 DZ10.0 521 Canis Venatici 43.605 ± 0.009 10.26 M1V 525.1 1 Centauri Centaurus 63.3 ± 0.2 4.23 F2 V 536 Virgo 33.990 ± 0.009 9.707 M0V b c 527
List of Gliese and GJ objects (1-1000)
List_of_Gliese_and_GJ_objects_(1-1000)
Branch of astronomy that uses X-ray observation
confinement unless it was a free-flowing coronal wind. In 1977 Proxima Centauri is discovered to be emitting high-energy radiation in the XUV. In 1978
X-ray_astronomy
(2016). "A terrestrial planet candidate in a temperate orbit around Proxima Centauri" (PDF). Nature. 536 (7617): 437–440. arXiv:1609.03449. Bibcode:2016Natur
List of exoplanets discovered in 2016
List_of_exoplanets_discovered_in_2016
American comic strip
in the Aqua-Mole (04/30/1962 – 09/15/1962) 120 strips D061 The Proxima Centauri Run (09/17/1962 – 02/16/1963) 132 strips D062 Lady Loot (02/18/1963 – 05/18/1963)
Brick_Bradford
made between 2019 and 2020 that did not originate from around Proxima Centauri – and hence are likely results of forms of local radiofrequency interference
2021_in_science
RHO CENTAURI
RHO CENTAURI
Girl/Female
Gujarati, Hindu, Indian
Soul
Boy/Male
Korean
Deep lake.
Surname or Lastname
English (Devon)
English (Devon) : variant spelling of Roe.Korean : variant of No.
Girl/Female
Spanish
River.
Male
Portuguese
Portuguese form of Latin Marius, MÃRIO means "male, virile."
Boy/Male
Australian, Indian, Indonesian, Japanese, Portuguese, Spanish, Tamil
Rival; Laborious; Eager; River; Brook; Stream; Happy
Boy/Male
Spanish
River. Abbreviation of names ending with '-rio.
Boy/Male
Australian, Chinese, Vietnamese
Longevity; Long Living
Male
Finnish
Finnish name URHO means "brave."
Boy/Male
Arabic, Hindu, Indian, Marathi, Muslim
Victorious
Boy/Male
Anglo Saxon
Red haired.
Female
Japanese
Variant spelling of Japanese Chou, CHO means "butterfly."
Boy/Male
Anglo, Australian, Danish
Good; Red Haired
Female
Japanese
(1-亮, 2-é¼, 3-è«’, 4-涼) Japanese unisex name RYO means 1) "brightness," 2) "distant," 3) "reality," 4) "refreshing."
Female/Male/Unisex
Korean
(豪金) Korean name JIN-HO means "golden hero/leader."
Male
Portuguese
Portuguese form of Latin Desiderius, DESIDÉRIO means "longing."Â
Boy/Male
African, Chinese, Hindu, Indian, Kannada, Korean, Tamil, Telugu
Diamond
Boy/Male
Korean
Righteous.
Boy/Male
Hindu, Indian
Spirit
Male
Japanese
(ç¿”) Japanese name SHO means "to fly, to soar" or "wind instrument."
RHO CENTAURI
RHO CENTAURI
Girl/Female
Tamil
Kanakalatha | காநாகலதா
Golden creeper
Surname or Lastname
English (Welsh borders)
English (Welsh borders) : unexplained.
Boy/Male
Biblical
The work of God.
Boy/Male
Hindu
Wealth
Girl/Female
Indian
Friend
Surname or Lastname
English (Essex and Cambridgeshire)
English (Essex and Cambridgeshire) : probably a habitational name from a place in Kent named Birling, from an Old English personal name Bǣrla + the suffix -ingas denoting ‘family or followers’. There is also a Birling (of the same derivation) in Northumberland, but this appears not to have contributed significantly to the modern surname.
Boy/Male
Hindu
Dignity, Majesty
Boy/Male
Arabic, Hindu, Indian, Islamic, Muslim, Urdu
Happiness; Fragrance; Ascending; Increasing; Progressive
Boy/Male
African, Australian, Nigerian
Born in Honor; Born During the New Year
Girl/Female
British, Christian, English, Greek
Pure
RHO CENTAURI
RHO CENTAURI
RHO CENTAURI
RHO CENTAURI
RHO CENTAURI
interj.
Alt. of Hoa
pron.
Who.
object.
Originally, an interrogative pronoun, later, a relative pronoun also; -- used always substantively, and either as singular or plural. See the Note under What, pron., 1. As interrogative pronouns, who and whom ask the question: What or which person or persons? Who and whom, as relative pronouns (in the sense of that), are properly used of persons (corresponding to which, as applied to things), but are sometimes, less properly and now rarely, used of animals, plants, etc. Who and whom, as compound relatives, are also used especially of persons, meaning the person that; the persons that; the one that; whosoever.
adv.
Then.
n.
One who hungers; one who longs.
a.
Pertaining to, or of the same horizon as, certain Mesozoic strata of the Rhetian Alps. These strata are regarded as closing the Triassic period. See the Chart of Geology.
interj.
Alt. of Hoa
n.
One who extols; one who praises.
pron. pl.
Those.
interj.
An exclamation of surprise, etc.
n.
One who delays; one who lingers.
a & n.
Rhetain.
interj.
An exclamation of surprise, joy, dejection, uneasiness, weariness, etc.
conj.
Though.
n.
One who accumulates; one who collects.
def. art.
The.
n.
See 1st Rob.
n.
A variety of the mineral cyanite.
n.
One who flings; one who jeers.
pron.
One; any; one.