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The angular diameter of Regulus from the 28 March 1980 CTIO occultation
On 28 March 1980 an occultation of Regulus (= alpha Leo) was observed intwo colors from Cerro Tololo Inter-American Observatory. The best-fituniform disk angular diameters (in milliarcseconds) derived from thesedata are 1.32 + or - 0.2 (yellow channel, lambda = 5768 A) and 1.37 + or- 0.11 (blue channel, lambda = 4356 A), in excellent agreement with themeasurement obtained through intensity interferometry and in reasonableagreement with a daytime occultation observed at Kitt Peak NationalObservatory.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Aslan |
| Sað Açýklýk: | 10h10m41.46s |
| Yükselim: | +11°49'29.6" |
| Görünürdeki Parlaklýk: | 8.324 |
| özdevim Sað Açýklýk: | 31.1 |
| özdevim Yükselim: | -29.9 |
| B-T magnitude: | 9.277 |
| V-T magnitude: | 8.403 |
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