"ഡെസ്പിന" എന്ന താളിന്റെ പതിപ്പുകൾ തമ്മിലുള്ള വ്യത്യാസം
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No edit summary റ്റാഗുകൾ: മൊബൈൽ സൈറ്റ് മൊബൈൽ വെബിലെ തിരുത്ത് |
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വരി 1:
{{Infobox planet
| name = Despina
| image = Despina.jpg
| caption = Despina as seen by ''[[Voyager 2]]'' (smeared horizontally)
| discoverer = [[Stephen P. Synnott]]<ref name="Willman-Neptune" /> and Voyager Imaging Team
| discovered = July 1989
| pronounced = {{IPAc-en|d|ᵻ|ˈ|s|p|aɪ|n|ə|,_|d|ᵻ|ˈ|s|p|iː|n|ə|,_|d|ɛ|-}}
| adjective = Despinian
| mpc_name = Neptune V
| named_after = [[Despoena|Δέσποινα]] ''Despœna''
| orbit_ref = <ref name="Jacobson2004" /><ref name="Showalter2019" />
| epoch = 18 August 1989
| semimajor = 52 525.95 km
| eccentricity = 0.00038 ± 0.00016
| period = 0.33465551 ± 0.00000001 d
| avg_speed =
| inclination = {{ubl | 0.216 ± 0.014° (to Neptune equator) | 0.06° (to local [[Laplace plane]]) }}
| satellite_of = [[Neptune]]
| dimensions = 180×148×128 km<ref name="Karkoschka2003" /><ref name="Williams2008-nssdc" />
| mean_radius = 78.0 ± 4.7 km<ref name="Showalter2019" />
| volume = ~1.8{{e|6}} km³
| mass = ~2.2{{e|18}} kg <br /> (based on assumed density)
| density = ~1.2 g/cm³ (estimate)<ref name="jplssd" />
| surface_grav = ~{{Gr|0.0022|75|3}} [[Acceleration|m/s<sup>2</sup>]]<ref name="Surface gravity" group="lower-alpha" />
| escape_velocity = ~{{V2|0.0022|75|3}} km/s<ref name="Escape velocity" group="lower-alpha" />
| rotation = [[synchronous rotation|synchronous]]
| axial_tilt = zero
| albedo = 0.09<ref name="Karkoschka2003" /><ref name="jplssd" />
| magnitude = 22.0<ref name="jplssd" />
| single_temperature = ~51 [[Kelvin|K]] mean (estimate)
| note = no
}}
[[നെപ്ട്യൂൺ|നെപ്ട്യൂണിന്റെ]] ഒരു ഉപഗ്രഹമാണ് '''ഡെസ്പിന'''. നെപ്റ്റ്യൂണിൽ നിന്നുള്ള അകലം കൊണ്ട് മൂന്നാമതാണിത്. 52,500 കിലോമീറ്റർ ദൂരെ കൂടി എട്ടു മണിക്കൂർ സമയംകൊണ്ട് മാതൃഗ്രഹത്തിന്റെ മധ്യരേഖയ്ക്ക് സമാന്തരമായി വൃത്താകൃതി സഞ്ചാരപഥത്തിലൂടെ ഇതൊരു പ്രദക്ഷിണം വയ്ക്കുന്നു.
== അവലംബം==
{{reflist
| refs =
<ref name="Willman-Neptune">
''Planet Neptune Data'' http://www.princeton.edu/~willman/planetary_systems/Sol/Neptune/
</ref>
<ref name="Jacobson2004">
{{cite journal| doi = 10.1086/423037| last1 = Jacobson | first1 = R. A.| last2 = Owen | first2 = W. M., Jr.| year = 2004| pages = 1412–1417| title = The orbits of the inner Neptunian satellites from Voyager, Earthbased, and Hubble Space Telescope observations| journal = Astronomical Journal| volume = 128| issue = 3| bibcode = 2004AJ....128.1412J| doi-access = free}}
</ref>
<ref name="Karkoschka2003">
{{cite journal| doi = 10.1016/S0019-1035(03)00002-2| last = Karkoschka| first = Erich| year = 2003| title = Sizes, shapes, and albedos of the inner satellites of Neptune| journal = Icarus| volume = 162| issue = 2| pages = 400–407| bibcode = 2003Icar..162..400K}}
</ref>
<ref name="Williams2008-nssdc">
{{cite web
| last = Williams
| first = Dr. David R.
| date = 2008-01-22
| title = Neptunian Satellite Fact Sheet
| publisher = [[NASA]] (National Space Science Data Center)
| url = http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptuniansatfact.html
| access-date = 2008-12-13
}}
</ref>
<ref name="jplssd">
{{cite web
| publisher = [[JPL]] (Solar System Dynamics)
| title = Planetary Satellite Physical Parameters
| date = 2008-10-24
| url = http://ssd.jpl.nasa.gov/?sat_phys_par
| access-date = 2008-12-13
}}
</ref>
<ref name="IAUC 4824">
{{cite journal
| last = Marsden
| first = Brian G.
| title = Satellites of Neptune
| date = August 2, 1989
| journal = IAU Circular
| volume = 4824
| url = http://www.cbat.eps.harvard.edu/iauc/04800/04824.html
| access-date = 2011-10-26
}}
</ref>
<ref name="IAUC 5347">
{{cite journal
| last = Marsden
| first = Brian G.
| title = Satellites of Saturn and Neptune
| date = September 16, 1991
| journal = IAU Circular
| volume = 5347
| url = http://www.cbat.eps.harvard.edu/iauc/05300/05347.html
| access-date = 2011-10-26
}}
</ref>
<ref name="BanfieldMurray1992">
{{cite journal| doi = 10.1016/0019-1035(92)90155-Z| last1 = Banfield| first1 = Don| last2 = Murray| first2 = Norm| date=October 1992 | title = A dynamical history of the inner Neptunian satellites| journal = Icarus| volume = 99| issue = 2| pages = 390–401| bibcode = 1992Icar...99..390B}}
</ref>
<ref name="Showalter2019">{{cite journal|last1= Showalter|first1=M. R.|last2=de Pater|first2= I.|last3= Lissauer|first3=J. J.|last4= French|first4=R. S.|url=https://www.spacetelescope.org/static/archives/releases/science_papers/heic1904/heic1904a.pdf|title= The seventh inner moon of Neptune|journal= Nature|volume= 566|issue= 7744|year= 2019|pages= 350–353|doi= 10.1038/s41586-019-0909-9|pmid= 30787452|pmc= 6424524|bibcode= 2019Natur.566..350S}}</ref>
}}
== പുറത്തേക്കുള്ള കണ്ണികൾ==
* [https://web.archive.org/web/20070801204420/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Nep_Despina Despina Profile] by [http://solarsystem.nasa.gov NASA's Solar System Exploration]
* [https://web.archive.org/web/20081221181025/http://www.dtm.ciw.edu/sheppard/satellites/nepsatdata.html Neptune's Known Satellites] (by [[Scott S. Sheppard]])
* {{APOD |date=3 September 2009 |title=Despina and its shadow transiting Neptune}}
{{Moons of Neptune}}
{{Solar System moons (compact)}}
{{Neptune}}
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