... Seen in projection, the disc is concentrated within a rather narrow range of ecliptic latitude (halfwidth 1/2 3 5 ), but closer analysis of the inclination distribution provides evidence for a surprisingly high level of dynamical excitation ...
... Pedro has givenѓЉexcellent lectures to the IAA]ѓЉThe discovery that the spinning object is tilted at nearly 90 degrees to the ecliptic plane is surprising, and suggests that this type of object could be very common in the Kuiper Belt. ...
... determination is by Magnusson (1986), who finds an ellipsoidal shape with a=b = 1:18 and b=c = 1:41 and a pole direction with ecliptic longitude and latitude (–; fi) of either (15 \Sigma 5 ffi ; +25 \Sigma 15 ffi ) or (195 \Sigma 5 ffi ; +15 \Sigma 15 ffi ...
... Venus isТљstill nearТљmaximum elongation from the Sun, but it'sТљonly now becoming fairlyТљeasy to see from our latitudes, becauseТљthe ecliptic lies at a very shallow angle to the W horizon in autumn evenings.Тљ It's slowly getting higher in the evening ...
... with the Earth in 1998 during their descending nodal passage at heliocentric distance rD , it is necessary that they (i) cross the ecliptic at the same heliocentric distance as the Earth; (ii) have orbits such that the longitude Q of their ascending node ...
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Ссылки http://star.arm.ac.uk/~meb/bailey_etal_1999_leonids_MNRAS.pdf -- 202.2 Кб -- 06.10.2011 Похожие документы