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Perseus (cytser) Gweler hefyd | Ffynonellau | LlywioStar-Names and Their Meanings"Cronfa Ddata SIMBAD""Cronfa Ddata SIMBAD"goychwanegu ato

Egin seryddiaethCytserau


Cytser seryddolLlwybr LlaethogCassiopeiaPleiadesMirfakAlgolcymeriad chwedlonolPerseusZeusDanaemytholeg Roegglystyrau sêrCysawd yr Haulblwyddyn golauCysawd yr Haul












Perseus (cytser)




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Cytser Perseus


Cytser seryddol yn hemisffer gogleddol y wybren yw Perseus. Mae'n ymhell i'r gogledd yn yr awyr yn y Llwybr Llaethog rhwng Cassiopeia a'r Pleiades. Ei sêr disgleiriaf yw Mirfak ac Algol.


Fe'i enwir ar ôl y cymeriad chwedlonol Perseus a oedd yn fab i Zeus a Danae ym mytholeg Roeg.[1]


Mae Algol, neu Beta Persei, yn seren newidiol enwog. Mae'r seren yn disgleirio gyda maintioli gwelady o 2.3, ond yn edwino bob 2.867 diwrnod i faintioli 3.5. Achosir hyn gan seren llai disglair symud rhwng y seren ddisgleiriaf a'r Cysawd yr Haul oherwydd bod y ddwy seren yn cylchroi o'i amgylch.[2]


O ganlyniad i'w lleoliad yn y Llwybr Llaethog, mae nifer o glystyrau sêr yn Perseus. Mae'r seren Mirfak, neu Alffa Persei, a nifer o sêr llai disglair cyfagos yn ffurfio Clwstwr Alffa Persei, clwstwr agored sydd un o'r clystyrau sêr agosaf i'r Cysawd yr Haul.[3]




NGC 869 a NGC 884, y Clwstwr Dwbl yn Perseus


Mae dau glwstwr sêr, NGC 869 a NGC 884, cyfagos i'w gilydd, yn hawdd i'w weld trwy binocular. Adnabyddir fel y Clwstwr Dwbl. Adnabyddir hefyd fel h a χ Persei ar ôl eu enwau mewn hen gatalogau sêr.[3]


Lleolir y clwstwr sêr Messier 34 yn Perseus, sydd hefyd yn hawdd i'w weld trwy binocular.[3]


Lleolir Clwstwr Perseus neu Abell 426, sydd yn glwstwr galaethau tua 75 milliwn parsec (240 milliwn blwyddyn golau) o'r Cysawd yr Haul, yn y cytser.[4]
Yr alaeth ddisgleiriaf yn y clwstwr yw NGC 1275, ffynhonnell radio a phelydr X pwerus a adnabyddir hefyd fel Perseus A.[3]



Gweler hefyd |


  • Sêr gwib Perseid


Ffynonellau |




  1. ↑ Allen, Richard Hinckley (1899). Star-Names and Their Meanings. Efrog Newydd: G. E. Stechert..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em Tud. 329–355. (Yn Saesneg.)


  2. ↑ "Cronfa Ddata SIMBAD". Centre de Données Astronomiques de Strasbourg. Cyrchwyd 24 Mawrth 2017. Ymchwiliad am Algol yn adnodd Simbad.


  3. ↑ 3.03.13.23.3 Burnham, Robert (1978). Burnham's Celestial Handbook. 3. Efrog Newydd: Dover Publications, Inc. ISBN 0-486-23673-0. Tudalennau 1394–1452. (Yn Saesneg.)


  4. ↑ "Cronfa Ddata SIMBAD". Centre de Données Astronomiques de Strasbourg. Cyrchwyd 24 Mawrth 2017. Ymchwiliad am Abell 426 yn adnodd Simbad.




gw • sg • go

Yr 88 Cytser modern

  • Andromeda

  • Antlia

  • Apus

  • Aquarius

  • Aquila

  • Ara

  • Aries

  • Auriga

  • Boötes

  • Caelum

  • Camelopardalis

  • Cancer

  • Canes Venatici

  • Canis Major

  • Canis Minor

  • Capricornus

  • Carina

  • Cassiopeia

  • Centaurus

  • Cepheus

  • Cetus

  • Chamaeleon

  • Circinus

  • Columba

  • Coma Berenices

  • Corona Australis

  • Corona Borealis

  • Corvus

  • Crater

  • Crux

  • Cygnus

  • Delphinus

  • Dorado

  • Draco

  • Equuleus

  • Eridanus

  • Fornax

  • Gemini

  • Grus

  • Hercules

  • Horologium

  • Hydra

  • Hydrus

  • Indus

  • Lacerta

  • Leo

  • Leo Minor

  • Lepus

  • Libra

  • Lupus

  • Lynx

  • Lyra

  • Mensa

  • Microscopium

  • Monoceros

  • Musca

  • Norma

  • Octans

  • Ophiuchus

  • Orion

  • Pavo

  • Pegasus

  • Perseus

  • Phoenix

  • Pictor

  • Pisces

  • Piscis Austrinus

  • Puppis

  • Pyxis

  • Reticulum

  • Sagitta

  • Sagittarius

  • Scorpius

  • Sculptor

  • Scutum

  • Serpens

  • Sextans

  • Taurus

  • Telescopium

  • Triangulum

  • Triangulum Australe

  • Tucana

  • Ursa Major

  • Ursa Minor

  • Vela

  • Virgo

  • Volans

  • Vulpecula


Saturn template.svgEginyn erthygl sydd uchod am seryddiaeth. Gallwch helpu Wicipedia drwy ychwanegu ato.








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