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Òrùn

Àtúnṣe àjápọ̀
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
(Àtúnjúwe láti Sun)
Ooru nwo

Kini Oorun?

[àtúnṣe | àtúnṣe àmìọ̀rọ̀]
orun
Òrùn ☉
Observation data
Mean distance
from Earth 		1.496×108 km
8 min 19 s at light speed
Visual brightness (V) −26.74 [1]
Absolute magnitude 4.83 [1]
Spectral classification G2V
Metallicity Z = 0.0122[2]
Angular size 31.6′ – 32.7′ [3]
Adjectives solar
Orbital characteristics
Mean distance
from Milky Way core 		~2.5×1017 km
26,000 light-years
Galactic period (2.25–2.50) × 108 a
Velocity ~220 km/s (orbit around the center of the Galaxy)
~20 km/s (relative to average velocity of other stars in stellar neighborhood)
~370 km/s[4] (relative to the cosmic microwave background)
Physical characteristics
Mean diameter 1.392×106 km [1]
109 × Earth
Equatorial radius 6.955×105 km [5]
109 × Earth[5]
Equatorial circumference 4.379×106 km [5]
109 × Earth[5]
Flattening 9×10−6
Surface area 6.0877×1012 km2 [5]
11,990 × Earth[5]
Volume 1.412×1018 km3 [5]
1,300,000 × Earth
Mass 1.9891×1030 kg[1]
333,000 × Earth[1]
Average density 1.408×103 kg/m3 [1][5][6]
Density Center (model): 1.622×105 kg/m3 [1]
Lower photosphere: 2×10−4 kg/m3
Lower chromosphere: 5×10−6 kg/m3
Corona (avg.): 1×10−12 kg/m3 [7]
Equatorial surface gravity 274.0 m/s2 [1]
27.94 g
28 × Earth[5]
Escape velocity
(from the surface) 		617.7 km/s [5]
55 × Earth[5]
Temperature Center (modeled): ~1.57×107 K [1]
Photosphere (effective): 5,778 K [1]
Corona: ~5×106 K
Luminosity (Lsol) 3.846×1026 W [1]
~3.75×1028 lm
~98 lm/W efficacy
Mean Intensity (Isol) 2.009×107 W·m−2·sr−1
Rotation characteristics
Obliquity 7.25° [1]
(to the ecliptic)
67.23°
(to the galactic plane)
Right ascension
of North pole[8] 		286.13°
19h 4min 30s
Declination
of North pole 		+63.87°
63°52' North
Sidereal rotation period
(at equator) 		25.05 days [1]
(at 16° latitude) 25.38 days [1]
25d 9h 7min 12s [8]
(at poles) 34.4 days [1]
Rotation velocity
(at equator) 		7.189×103 km/h [5]
Photospheric composition (by mass)
Hydrogen 73.46%[9]
Helium 24.85%
Oxygen 0.77%
Carbon 0.29%
Iron 0.16%
Neon 0.12%
Nitrogen 0.09%
Silicon 0.07%
Magnesium 0.05%
Sulfur 0.04%
This box:
Òòrùn

Òòrùn ni ìràwọ̀ tó wà láàárín ètò òòrùn. Ilẹ̀-ayé àti àwọn ohun mìíràn (àwọn pílánẹ́ẹ̀tì yoku, oníràwọ̀, olókùúta, òkúta iná àti eruku) wọ́n ń yípo òòrùn, tó ṣe fúnra rẹ̀ nìkan ni ìtóbi 99.8% gbogbo Ètò Òòrùn. Okun láti inú òòrùn gẹ́gẹ́ bíi ooruntitan ń pèsè fún àwọn ohun ẹlẹ́mìí lọ́nà tí a mọ̀ sí ikommolejo (photosynthesis), bẹ́ẹ̀ ni òòrùn ló ń sọ bí ìgbà àti ojú-ọjọ́ ṣe ń rí.

ẹyẹ fo ni orun

Pelu wale, oorun gbe gbogbo aye, awon iràwo, ati awon planeti lati lo ni ayika oorun. Laisi wale, ko si kankan ki o le ye tabi je laaye ni agbayé tabi aàjoorawò wa!


Orun pèlú je nibo awon ẹyẹ won ma fo.

Oorun fẹẹrẹ ni igba ọgọrun ju aiye lọ ati ni iwọn igba mẹwa fifẹ ju Jupiter aye ti o tobi julọ lọ[10]

Lati aaye aye wa lori Earth, Oorun le han bi orisun ina ati ooru ti ko yipada ni ọrun. Ṣugbọn Oorun jẹ irawọ ti o ni agbara, iyipada nigbagbogbo ati fifiranṣẹ agbara si aaye. Imọ ti ikẹkọ Oorun ati ipa rẹ jakejado eto oorun ni a pe ni heliophysics.[10]

Oorun jẹ ohun ti o tobi julọ ninu eto oorun wa. Iwọn ila opin rẹ jẹ nipa 865,000 maili (1.4 milionu kilomita). Walẹ rẹ di eto oorun papọ, fifi ohun gbogbo pamọ lati awọn aye aye ti o tobi julọ si awọn ege idoti ti o kere julọ ni yipo ni ayika rẹ.[10]

Paapaa botilẹjẹpe Oorun jẹ aarin ti eto oorun wa ati pataki si iwalaaye wa, irawọ aropin nikan ni awọn ofin ti iwọn rẹ. Awọn irawọ ti o to awọn akoko 100 tobi ni a ti rii. Ati ọpọlọpọ awọn eto oorun ni diẹ ẹ sii ju ọkan star. Nipa kikọ ẹkọ Oorun wa, awọn onimo ijinlẹ sayensi le ni oye diẹ si awọn iṣẹ ti awọn irawọ ti o jinna.[10]

Apakan ti o gbona julọ ti Oorun ni ipilẹ rẹ, nibiti awọn iwọn otutu ti ga ju egbélégbè metadinlogbon °F ( egbélégbè meedogun °C). Apakan Oorun ti a pe ni oju rẹ - fọtoyiya - jẹ itura ti o jo egberun mewaa °F (egberun marun-ó-lé-eedegbeta °C). Ninu ọkan ninu awọn ohun ijinlẹ ti o tobi julọ ti Oorun, oju-aye oorun ti oorun, corona, n gbona diẹ sii ti o na lati oke. Korona de egbélégbè meta ati ilaji °F (egbélégbè meji °C) - pupọ, gbona pupọ ju fọtoyiya lọ.[10]

Oorun ti walẹ di eto oorun papọ, fifi ohun gbogbo pamọ - lati awọn aye aye ti o tobi julọ si awọn patikulu ti o kere julọ ti idoti – ni yipo rẹ. Asopọmọra ati awọn ibaraenisepo laarin Oorun ati Earth ṣe awakọ awọn akoko, awọn ṣiṣan omi okun, oju ojo, oju-ọjọ, awọn beliti itankalẹ ati awọn auroras. Bó tilẹ̀ jẹ́ pé ó ṣe pàtàkì gan-an fún wa, ọ̀pọ̀ bílíọ̀nù ìràwọ̀ ló wà bí oòrùn wa tí wọ́n fọ́n ká káàkiri ìṣùpọ̀ ìràwọ̀ Milky Way.[10]

Oorun ni ọpọlọpọ awọn orukọ ni ọpọlọpọ awọn aṣa. Ọrọ Latin fun Sun jẹ “sol,” eyiti o jẹ ajẹtífù akọkọ fun ohun gbogbo ti o jọmọ Oorun: oorun.[10]

Àyọkà yìí tàbí apá rẹ̀ únfẹ́ àtúnṣe sí.

Ẹ le fẹ̀ jù báyìí lọ tàbí kí ẹ ṣàtúnṣe rẹ̀ lọ́nà tí yíò mu kúnrẹ́rẹ́. Ẹ ran Wikipedia lọ́wọ́ láti fẹ̀ẹ́ jù báyìí lọ.

Itokasi

[àtúnṣe | àtúnṣe àmìọ̀rọ̀]
  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 Williams, D. R. (2004). "Sun Fact Sheet". NASA. Retrieved 2010-09-27. 
  2. ↑ Asplund, M.; N. Grevesse and A. J. Sauval (2006). "The new solar abundances - Part I: the observations". Communications in Asteroseismology 147: 76–79. Bibcode 2006CoAst.147...76A. doi:10.1553/cia147s76. 
  3. ↑ "Eclipse 99: Frequently Asked Questions". NASA. Retrieved 2010-10-24. 
  4. ↑ Hinshaw, G.; et al. (2009). "Five-year Wilkinson Microwave Anisotropy Probe observations: data processing, sky maps, and basic results". The Astrophysical Journal Supplement Series 118: 225–245. Bibcode 2009ApJS..180..225H. doi:10.1088/0067-0049/180/2/225. 
  5. ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 "Solar System Exploration: Planets: Sun: Facts & Figures". NASA. Archived from the original on 2008-01-02. 
  6. ↑ Ko, M. (1999). Elert, G., ed. "Density of the Sun". The Physics Factbook. 
  7. ↑ "Principles of Spectroscopy". University of Michigan, Astronomy Department. 30 August 2007. 
  8. ↑ 8.0 8.1 Seidelmann, P. K. (2000). "Report Of The IAU/IAG Working Group On Cartographic Coordinates And Rotational Elements Of The Planets And Satellites: 2000". Retrieved 2006-03-22.  Unknown parameter |coauthors= ignored (|author= suggested) (help)
  9. ↑ "The Sun's Vital Statistics". Stanford Solar Center. Retrieved 2008-07-29. , citing Eddy, J. (1979). A New Sun: The Solar Results From Skylab. NASA. p. 37. NASA SP-402. http://history.nasa.gov/SP-402/contents.htm. 
  10. ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 https://science.nasa.gov/sun/facts/
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