Pamacomet akati wandei akawanikwa muna 2021, kometi C/2021 A1, inonzi Comet Leonard mushure mekuiwana Gregory Leonard, inogona kuonekwa kune vasina kupfeka. ziso musi wa12 Zvita 2021 kana yasvika pedyo nePasi (pachinhambwe chemamiriyoni makumi matatu nemashanu emakiromita), pamwe kekupedzisira, isati yasvika paVenus zvakanyanya musi wa35 Zvita ichiuya pedyo neZuva musi wa18 Ndira 3.
Kometi zvitunha zvidiki zvekudenga, chando chasara kubva padanho rekutanga rekuumbwa kwekunze. mapuraneti, kuenderera kutenderera zuva mune elliptical orbits. Mune comet's Orbit, perihelion ndiyo poindi kana iri pedyo neZuva nepo aphelion iri kuresa. Kana iri mukati mezuva riri pedyo ne perihelion, comets emit particles uye magasi pakudziyirwa nemwaranzi yezuva inobudisa hunhu muswe.
Parizvino, anenge 3775 comets anozivikanwa mu Solar System.
Zvichienderana nenguva yakatorwa mukuzadzisa shanduko yakazara yeZuva, makometi angave ari Long-period comets kana Short-period comets. Nguva pfupi-pfupi comets inopedzisa shanduko yakazara yakatenderedza zuva mukati memakore mazana maviri (semuenzaniso, Comet Halley inotora makore makumi manomwe nematanhatu kuti ipedze kutenderera kumwe kuzere kwezuva) nekudaro inonziwo Near-Earth Comets (NECs). Makometi akadaro anotariswa zvakanyanya nekuda kwekugona kwawo kukonzera kukanganisa pasi.
Iyo comet C/2021 A1 (Leonard) inguva yakareba comet yakawanikwa naGregory Leonard musi wa 3 Ndira 2021. Orbital nguva ingangoita makore 80,000 zvichireva kuti inopedza kutenderera kumwe kutenderedza Zuva mumakore angangoita 80,000. Saka, nguva inotevera ichauya pedyo neZuva mushure memakore 80,000 kubva zvino izvo zvinoita uyu mukana wakasiyana.
Musi wa12 Zvita 2021, comet Leonard ichange iine 34.9 miriyoni km (0.233 AU; one astronomical unit AU ndiyo kureba pakati pePasi nezuva redu. An AU inoenderana ne93 miriyoni mamaira kana 150 miriyoni km kana 8 light-minutes) kubva. Nyika.
Zvadaro, ichaswedera pedyo neVenus iri pedyo zvikuru kusvika mukati memakiromita 4.2 mamiriyoni (0.029 AU) musi wa18 Zvita 2021. Pasina mazuva maviri gare gare, ichafura Venus nemuswe wayo weguruva. Chekupedzisira, ichave iri pairiheion kureva, padyo neZuva pa3 Ndira 2022.
Handina chokwadi kana ichadzoka asi kana ikadaro, ichava makore 80,000 XNUMX kubva zvino apo munhu angaiona zvakare.
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Sources:
- Zhang Q., et al 2021. Preview yeComet C/2021 A1 (Leonard) uye Kusangana Kwayo neVenus. The Astronomical Journal, Vhoriyamu 162, Nhamba 5. Rakabudiswa 2021 Gumiguru 13. DOI: https://doi.org/10.3847/1538-3881/ac19ba
- NASA Astronomy Mufananidzo weZuva https://apod.nasa.gov/apod/ap211203.html
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