Pepa Globe

Avhareji yedaro pakati pekutenderera kwepasi kutenderedza zuva nezuva anenge makiromita mamirioni zana nemakumi mashanu (makiromita mazana mapfumbamwe nemazana mapfumbamwe), uye zvinoita shanduko imwechete 365.2564 yega inoreva zuva rezuva, iro rinodaidzwa kunzi gore rekupedzisira. Muna 1990, Voyager 1 yakatora mufananidzo wePasi (matema madema bhuruu) kubva pamabhirioni 6.4 emakiromita (mabhiriyoni mana mamaira). Shanduko inoita kuti zuva riite kufamba kuri kuita 1 ° kumabvazuva kuenzaniswa nenyeredzi mazuva ese, uye kufamba kwemaawa gumi nemaviri kwakaenzana nehupamhi hwezuva kana mwedzi. Nekuda kwerudzi urwu rwekufamba, nyika inotora avhareji yemaawa makumi maviri nemana, rinova zuva rezuva, kupedzisa kutenderera kwakazara kutenderedza axis yayo uye kubvumira zuva kuti ripfuure nepakati-kati zvakare. Ivhareji yekumhanyisa kwekuchinja kwepasi ingangoita 29.8 km / s (107000 km / h), uye inogona kufamba makiromita 12,742 (7,918 mi) mukati memaminetsi manomwe, zvinoenzana nehupamhi hwepasi; inogona kufamba makiromita angangosvika mazana matatu nemakumi mana nemakumi mana nemaawa anenge matatu. Daro pakati penyika nemwedzi. [2] Munguva dzazvino uno, iyo nguva iyo nyika perihelion uye aphelion inoonekwa muna Ndira 3 naJuly 4, zvichiteerana. Nekuda kwemhedzisiro yeshanduko mune precession uye orbital parameter, aya maviri mazuva anozochinja nekufamba kwenguva. Shanduko iyi ine cyclical ficha, inova iyo Milankovitch hypothesis. Iko kushandurwa kwedaro pakati penyika nezuva kunokonzera simba rezuva rinowanikwa nepasi kubva paaphelion kusvika perihelion kuwedzera ne6,9%. Nekuti iyo yekumaodzanyemba hemisphere inogara yakatarisana nezuva panguva imwechete gore rega rega kana iri padyo neperihelion, iyo yekumaodzanyemba hemisphere inogamuchira zvishoma zvishoma simba rezuva kupfuura iro kuchamhembe hemisphere mukati megore. Zvisinei, kurudziro iyi idiki zvakanyanya pane pesvedzero yekutenderera ekisero yekuchinja kwesimba rese. Simba rakawanda rinogashirwa rinosanganiswa nemvura yemugungwa, iyo inoverengera chikamu chakakwirira chezasi kwemaodzanyemba.