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Re: Siren' - Desyataya planeta Solnechnoi sistemy ?
1.08.2005 17:10 | Gost'
E.Griv , ispol'zuya teoriyu volnovyh dvizhenii, vyvodit zakon Ticiusa-Bode (Blegga- Richardsona) v vide a=r0*A**n, gde r0=0.21 a.e, A=1.73, n=1,2,... (Pluton ignoriruetsya)i obosnovyvaet sushestvovanie planet na KRUGOVYH orbitah s radiusami 87 a.e., 151 a.e., 251, a.e. 462 a.e. i 783 a.e. (sm. materialy 197 simpoziuma IAU "Dynamics of Populations of Planetary Systems". Eds Knesevich , A. Milani. 2005. ) V Trudah VIII s'ezda Astronomicheskogo obshestva N.I.Perov (GAISh MGU, iyun', 2005), rassmatrivaya model' proishozhdeniya Sedny, obosnovyvaet sushestvovanie planety s a=87 a.e. s dolgotoi 209 gradusov (na iyul' 2005 g.), s sootnosheniem R/M bol'she, chem dlya Zemli v 6 raz. Krome Sireni v oblasti 40-100 a.e. , veroyatno, budut obnaruzheny i drugie MALYE tela Solnechnoi sistemy.
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- Lila - desyataya planeta Solnechnoi sistemy?
(O. S. Bartunov/GAISh, Moskva,
30.07.2005 11:53, 6.8 KBait, otvetov: 18)
Obnovlenie ot 2 oktyabrya 2005g.
10 sentyabrya na observatorii Keka (Mauna Kea) byl otkryt sputnik Kseny (Xena), tak teper' nazyvayut (neoficial'no) desyatuyu planetu! Oficial'noe nazvanie luny - S/2005 (2003 UB313) 1, no otkryvateli predpochitayut nazvanie Gabriela (Gabrielle) v chest' podrugi Kseny (Xena) - geroini populyarnogo seriala "Zena - koroleva voinov".
Planeta, kotoraya poka nazvana kak 2003UB313, byla otkryta astronomami Maikom Braunom (Mike Brown, Kalteh), Chadom Truhil'o (Chad Trujillo, observatoriya Gemini) i Devidom Rabinovichem (David Rabinowitz, 'el') vo vremya obzora, kotoryi provoditsya na avtomaticheskom 48" (122 sm) teleskope Samuelya Oschina (Samuel Oschin) observatorii Palomar. Kstati, na etom zhe teleskope byli otkryty takie ob'ekty Solnechnoi sistemy iz poyasa Koipera, kak Sedna (2003 god) i Kvavar (2002 god). Otkryvatelyami planety bylo predlozheno romanticheskoe imya Lila (imya docheri Maika Brauna) i v nastoyashee vremya ozhidaetsya ego utverzhdenie Mezhdunarodnym Astronomicheskim Soyuzom (IAU, sm. novosti ob etom).
Planeta byla otkryta na snimke, poluchennym 21 oktyabrya 2003, odnako, tol'ko 5 yanvarya 2005 goda bylo dokazano, chto etot ob'ekt yavlyaetsya planetoi i poslednie 7 mesyacev astronomy izuchali razmery i parametry orbity planety.
Na posledovatel'nyh fotografiyah, poluchennyh cherez 90 minut, kruzhochkom vydeleno polozhenie planety, tak chto mozhno zametit' ee smeshenie otnositel'no zvezd fona, kotoroe, na samom dele, yavlyaetsya ne ee sobstvennym dvizheniem, a rezul'tatom parallaksa - dvizheniya Zemli vokrug Solnca. Nablyudaemyi effekt ukazyvaet na to, chto ob'ekt nahoditsya znachitel'no blizhe, chem zvezdy fona.
Razmer planety mozhno naiti po ee yarkosti, no dlya tochnogo opredeleniya neobhodimo tochno znat' al'bedo planety, kotoroe poka neizvestno. Sledovatel'no, mozhno govorit' tol'ko pro nizhnyuyu ocenku razmera planety, kotoraya okazyvaetsya poryadka razmera Plutona (diametr okolo 2300 km). Maik Braun dazhe govorit, chto novaya planeta mozhet byt' i v 1.5 raza bol'she Plutona. S drugoi storony, tak kak infrakrasnyi kosmicheskii teleskop Spitcera (Spitzer Space Telescope) ne vidit ego, mozhno zaklyuchit', chto novaya planeta ne mozhet byt' bolee chem v 2 raza bol'she Plutona. Takim obrazom, novyi ob'ekt, kotoryi yavlyaetsya tret'im po yarkosti v poyase Koipera i nahoditsya na rasstoyanii ot Solnca v 97 raz dal'she chem Zemlya i v 3 raza dal'she chem Pluton, deistvitel'no pretenduet na zvanie desyatoi planety Solnechnoi sistemy. Dlya sravneniya, diametr Kvavara sostavlyaet okolo 1250 km, a Sedny - 1600 km (sm risunok nizhe).
Otkrytaya planeta seichas nahoditsya na samoi dal'nei tochke svoei orbity i cherez 240 let blizhe vsego podoidet k Solncu - na rasstoyanie v 36AU. Takoe bol'shoe razlichie v rasstoyaniyah yavlyaetsya sledstviem bol'shogo ekscentrisiteta orbity (sm. risunok orbity).
Prim.Red.: Obratite vnimanie, na risunke pokazany orbity planet-gigantov Yupitera, Saturna, Urana i Neptuna, a takzhe orbity Plutona i 2003 UB313. Orbity pervyh chetyreh planet prakticheski krugovye. A u ellipticheskih orbit samaya blizkaya k Solncu tochka (perigelii) i samaya udalennaya (afelii) dolzhny lezhat' na odnoi pryamoi s Solncem po raznye storony ot nego. U Plutona eto tak, a u 2003 UB313 - net. V chem delo? Okazyvaetsya na risunke izobrazheny proekcii orbit na ploskost' (ekliptiki) vblizi kotoroi dvizhutsya vse planety Solnechnoi sistemy. A orbita Lily imeet bol'shoi naklon i=44.177o i proekciya sil'no iskazhaet formu orbity. Poyasnit' etu situaciyu mozhet chertezh iz stat'i v Vikipedii.
Utverzhdaetsya, chto planetu mozhno nablyudat' dazhe v ochen' prodvinutyi lyubitel'skii teleskop. Koordinaty planety mozhno poluchit' s pomosh'yu sluzhby efemerid JPL. Dlya etogo nado vybrat' "Select target" i vvesti "2003 UB313" v pole "Small bodies".
Informaciya ob otkrytoi planete vse vremya obnovlyaetsya i dostupna na stranice Maika Brauna.
Kstati, sovsem nedavno, byl anonsirovan novyi ob'ekt 2003EL61 iz poyasa Koipera, takzhe otkrytyi vo vremya etogo obzora, no eto uzhe sovsem drugaya istoriya.
Obnovlenie:
Mezhdunarodnyi astronomicheskii soyuz sozdal (sm. anons) special'nuyu rabochuyu gruppu, kotoraya dolzhna vyrabotat' opredelenie, chto takoe planeta. Do teh por poka ne budet ponyatno, yavlyaetsya li 2003 UB313 planetoi ili net, vopros ob oficial'nom nazvanii ne budet rassmatrivat'sya.Obnovlenie: Nauchnaya stat'ya pro otkrytie 10-i planety dostupna na saite avtora otkrytiya.
- Re: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
30.07.2005 23:16, 442 Bait, otvetov: 1)
Dopushena oshibka iliv opredelenii rasstoyaniya planety ot Solnca, ili v periode ee obrasheniya vokrug Solnca.
Esli schitat', chto rasstoyanie do desyatoi planety 14,5 mlrd. km, to period obrasheniya dolzhen sostavlyat' 954,244 goda.
Esli schitat', chto period sostavlyaet 560 let, to rasstoyanie mezhdu Solncem i planetoi dolzhno sostavlyat' 10169907502 km (10,169 mlrd. km)
S uvazheniem V.D. Krasnov
E-mail: apeyron@kolomna.ru
- Re[2]: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 31.07.2005 16:06, 37 Bait) Ona zhe ne po krugovoi orbite krutitsya
- Re: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 1.08.2005 11:41, 105 Bait, otvetov: 10) Esli ee deistvitel'no nazovut Siren' - na moi vzglyad eto budet uzhasno. Neptun, Pluton, Siren'. :( Zhut'.
- Re[2]: Siren' - Desyataya planeta Solnechnoi sistemy ?
(M. E. Prohorov,
11.08.2005 22:30, 373 Bait)
Pochemu Siren'? Po latyni siren' - Syringa, po angliiski - Lilac, a ne Lila.Citata: Esli ee deistvitel'no nazovut Siren' - na moi vzglyad eto budet uzhasno. Neptun, Pluton, Siren'. :( Zhut'. - Re[2]: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
16.08.2005 21:05, 47 Bait, otvetov: 5)
Po mne to narmalno luchshe Siren' chem Lila
- Re[3]: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 19.08.2005 12:10, 150 Bait, otvetov: 4) Lila - imya devushki-gumanoida iz mul'tika Futurama! Narod! Bud'te poproshe! Ya smotryu Vy tut vse prosvetlennye niibacca, no ne vse zhe eto mogut ponyat'!
- Re[4]: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 19.08.2005 14:29, 10 Bait) Vtoroi nah
- Re[4]: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 19.08.2005 21:38, 93 Bait) soglasna,no "Siren'" zvuchit ne ochen',a vot "Lila"-krasivo (moya lyubimaya geroinya iz "futuramy")
- Re[4]: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
24.08.2005 22:25, 120 Bait, otvetov: 1)
Chto-to tut pryam narostayut nezdy.
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- Re[5]: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
24.08.2005 22:27, 94 Bait)
Chto-to tut pryam narostayut nezdy.
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- Re[2]: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 15.09.2005 20:11, 98 Bait, otvetov: 2) O-O da eto budet uzhastno.I voobshe mne kazhetsya,chto ni LILO ne SIREN' ne podhodyashee imya dlya planety.
- Re[3]: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
17.01.2006 18:20, 302 Bait, otvetov: 1)
< tbody>
Citata: O-O da eto budet uzhastno.I voobshe mne kazhetsya,chto ni LILO ne SIREN' ne podhodyashee imya dlya planety. < /tr> - Re[4]: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
17.01.2006 18:21, 58 Bait)
Po-moemu - krasivoe imya! kak Lilu iz 5-go elementa!
- Re: Siren' - Desyataya planeta Solnechnoi sistemy ?
( Gost',
1.08.2005 13:53, 414 Bait)
Deistvitel'no, po gruboi prikidke period obrasheniya raven 97*SQR(97) = 955 let. S popravkoi na ekscentrisitet zemnoi orbity sovpadaet s vychisleniyami (1). Tak chto yavnaya oshibka.
(2): Tak i ponyatno, esli perigelii 36 AU, a afelii97AU, orbita yavno ne krugovaya. S bol'shim ekscintrisitetom 0.928. Tak natretii zakon Keplera priduman. Sravnivayutsya odinakovye elementy orbit, tradicionno - bol'shie poluosi.
- >> Re: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 1.08.2005 17:10, 779 Bait) E.Griv , ispol'zuya teoriyu volnovyh dvizhenii, vyvodit zakon Ticiusa-Bode (Blegga- Richardsona) v vide a=r0*A**n, gde r0=0.21 a.e, A=1.73, n=1,2,... (Pluton ignoriruetsya)i obosnovyvaet sushestvovanie planet na KRUGOVYH orbitah s radiusami 87 a.e., 151 a.e., 251, a.e. 462 a.e. i 783 a.e. (sm. materialy 197 simpoziuma IAU "Dynamics of Populations of Planetary Systems". Eds Knesevich , A. Milani. 2005. ) V Trudah VIII s'ezda Astronomicheskogo obshestva N.I.Perov (GAISh MGU, iyun', 2005), rassmatrivaya model' proishozhdeniya Sedny, obosnovyvaet sushestvovanie planety s a=87 a.e. s dolgotoi 209 gradusov (na iyul' 2005 g.), s sootnosheniem R/M bol'she, chem dlya Zemli v 6 raz. Krome Sireni v oblasti 40-100 a.e. , veroyatno, budut obnaruzheny i drugie MALYE tela Solnechnoi sistemy.
- Re: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 2.08.2005 0:36, 122 Bait) Da puskai nazyvayut ee Siren'yu- ne zhalko. Poka imena ne konchatsya. Nekotorye do sih por sporyat,schitat' li Pluton planetoi...
- Re: Siren' - Desyataya planeta Solnechnoi sistemy ? ( Gost', 2.08.2005 0:58, 30 Bait) A kakova ee zvezdnaya velichina?
- Re: Lila - desyataya planeta Solnechnoi sistemy?
( Gost',
28.08.2005 6:15, 141 Bait)
Po-moemu oba etih nazvaniya ne ochen'-to zvuchat dlya planety, luchshe nazvat' ee imenem kakogo-nibud' boga ili voobshe ne nazyvat' planetoi.
