Physics
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2330..327b&link_type=abstract
In its Uranus and Neptune p 327-347 (SEE N85-11927 02-91)
Physics
1
Neptune (Planet), Planetary Gravitation, Planetary Rotation, Uranus (Planet), Periodic Variations, Planetary Atmospheres, Planetary Cores, Polarity, Spin, Wind Velocity
Scientific paper
An assessment of recent research bearing on the rotational properties of Uranus and Neptune is given. It is concluded that these properties are best described by the following estimates; URANUS: Direction of pole = alpha (1950) = 256:72 delta (1950) = -15:04 with an absolute uncertainty of about 0:2, Period = 15 to 17 hours; Sense of spin = Retrograde; NEPTUNE: alpha (1950) = 297:8; delta (1950) = + 41:2, with an uncertainty of about 4 degrees towards the pole of Triton's orbit, Period = 18.2 + or - 0.4 hours, Sense of spin = Prograde. There is a clear signature of large scale, zonal, atmospheric flows in observations of the atmosphere of Neptune. Wind velocities are at least as great as 109 m.sec-1. There is no evidence pro or con for atmospheric motions in the Uranus case.
Belton Michael J. S.
Terrile Richard J.
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