The 1991 apparition of Uranus

Details The 1991 apparition of Uranus The 1991 apparition of Uranus

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jalpo..36...20s&link_type=abstract

Association of Lunar and Planetary Observers, Journal (ISSN 0039-2502), vol. 36, no. 1, March 1992, p. 20-22.

Astronomy and Astrophysics

Astronomy

5

Astronomical Photometry, Solar Orbits, Telescopes, Uranus (Planet), Photodiodes, Planetary Limb, Quantum Efficiency, Solid State Devices, Visual Observation

Scientific paper

Three individuals, all using SSP-3 solid-state photometers, measured the magnitude of Uranus during 1991. This photometer and some general photometric concepts are discussed. In all cases, the observers used filters closely matching the Johnson U, B, V, R and I system. The adopted magnitudes of Uranus in 1991, reduced to 1 AU distance from the earth and the sun, are: U(1,0) = -6.40, B(1,0) = -6.62 +/- 0.2, V(1,0) = -7.20 +/- 02, R(1,0) = -7.01 +/- 0.2, and I(1,0) = -6.22 +/- 0.5. Visual photometry and disk studies of Uranus were also carried out.

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