Ditemukan 10 Planet
Backyard astronomers with large telescopes can see the new planet. But don't expect to be impressed: It looks like a dim speck of light, visual magnitude 19, moving very slowly against the starry background. Backyard astronom dengan teleskop besar dapat melihat planet baru terkesan. Tapi jangan berharap menjadi: Sepertinya setitik cahaya redup, magnitudo visual 19, bergerak sangat perlahan dengan latar belakang yang berbintang. "It is currently almost directly overhead in the early-morning eastern sky in the constellation Cetus," notes Brown. "Saat ini hampir tepat di atas kepala pada awal pagi timur-langit di konstelasi Cetus," catatan Brown.
The planet was discovered by, in addition to Brown, Chad Trujillo, of the Gemini Observatory in Mauna Kea, Hawaii, and David Rabinowitz, of Yale University, New Haven, Connecticut. Planet tersebut ditemukan oleh, selain Brown, Chad Trujillo, dari Observatorium Gemini di Mauna Kea, Hawaii, dan David Rabinowitz dari Yale University, New Haven, Connecticut. They first photographed the new planet with the 48-inch Samuel Oschin Telescope on October 31, 2003. Mereka pertama kali memotret planet baru dengan inci Samuel Oschin-48 Telescope pada tanggal 31 Oktober 2003. The object was so far away, however, that its motion was not detected until they reanalyzed the data in January of this year. Benda itu begitu jauh, Namun, yang geraknya tidak terdeteksi sampai mereka reanalyzed data pada bulan Januari tahun ini. In the last seven months, the scientists have been studying the planet to better estimate its size and its motions. Dalam tujuh bulan terakhir, para ilmuwan telah mempelajari planet ini untuk lebih perkiraan ukuran dan gerakan nya.
"We are 100 percent confident that this is the first object bigger than Pluto ever found in the outer solar system," Brown adds. "Kami 100 persen yakin bahwa ini adalah obyek pertama lebih besar dari Pluto yang pernah ditemukan di luar tata surya," tambah Brown.
Right: The new planet, circled in white, moves across a field of stars on Oct. 21, 2003. Kanan: Planet baru, dilingkari putih, bergerak di bidang bintang pada 21 Oktober 2003. The three photos were taken about 90 minutes apart. Ketiga foto diambil sekitar 90 menit sekali. Image credit: Samuel Oschin Telescope, Palomar Observatory. Gambar kredit: Samuel Oschin Telescope, Palomar Observatory. [ More ] [ More ]
Telescopes have not yet revealed the planet's disk. Teleskop belum mengungkapkan planet disk. To estimate how big it is, the astronomers must rely on measurements of the planet's brightness. Untuk memperkirakan seberapa besar itu, para astronom harus mengandalkan pengukuran kecerahan planet. Like all planets, this new one presumably shines by reflecting sunlight. Seperti semua planet, yang satu ini mungkin baru bersinar dengan merefleksikan sinar matahari. The bigger the planet, generally speaking, the bigger the reflection. Semakin besar planet ini, secara umum, semakin besar refleksi. The reflectance, the fraction of light that bounces off the planet, is not yet known. reflektansi itu, fraksi cahaya yang terpantul dari planet ini, belum diketahui. Nevertheless, it is possible to set limits on the planet's diameter: Namun demikian, adalah mungkin untuk menetapkan batas diameter planet:
"Even if it reflected 100 percent of the light reaching it, it would still be as big as Pluto," says Brown. "Bahkan jika mencerminkan 100 persen cahaya mencapai itu, masih akan sebesar Pluto," kata Brown. Pluto is 1400 miles (2300 km) wide. Pluto adalah 1400 mil (2300 km) lebar. "I'd say it's probably [about] one and a half times the size of Pluto, but we're not sure." "Aku akan mengatakan itu mungkin [sekitar] satu setengah kali ukuran Pluto, tapi kami tidak yakin."
The planet's temporary name is 2003 UB313. itu sementara nama planet 2003 UB313 ini. A permanent name has been proposed by the discoverers to the International Astronomical Union, and they are awaiting the decision of this body before announcing the name. Nama permanen telah diusulkan oleh penemu untuk Persatuan Astronomi Internasional, dan mereka sedang menunggu keputusan dari badan ini sebelum mengumumkan nama. Stay tuned! Menantikan!
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