Telaah Awal Keubahan Setengah Sumbu Panjang Akibat Efek Yarkovsky Pada Asteroid 3362 Khufu (1984 QA)  

Oleh:

Soegiartini, E. ; Siregar, S.

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Jurnal Sains Dirgantara vol. 5 no. 2 (Jun. 2008), page 169-181.
Topik: Efek Yarkovsky; Asteroid; Orbit

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS49.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Yarkovsky effect is a non-gravitational force that works on the object because of anisotropic photon thermal emission, which brings the momentum to this object. Usually, this effect works in a small meteoroids or asteorids (the diameter about 10 cm to 10 km). In this paper, we try to address the Yarkovsky effect that works on 3362 Khufu (1984 QA) asteroid. Diameter of 3362 Khufu (1984 QA) is 0.7 km, with Bond-albedo is 0.17. Yarkovsky effect will changes the semi major axis of the orbits and then changes the eccentricity. The changing of asteroid's orbital element will bring asteroid into the Earth's orbit. This study shows the changes of the amplitude of semi major axis which is caused by diurnal and seasonal components. The maximum amplitude of each components are 1.3x10-5 m/s and -3.7x10-9 m/s.

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