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Observations of double stars and new pairs. XV
The study reports visual and photographic measures listed for 1150 pairsobtained in the time frame 1989.91-1992.15, including 221 new doublestars. Magnitudes were estimated for a part of the objects, especiallythe fainter ones. Plate orientations were calculated from field stars ofknown positions and were precessed to the epoch; numbers of nights andof measured exposures are given. Reobservation of faint, neglected pairsreveal many corrections to the data from the old discovery lists.
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sonraki gruplarýn üyesi:
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Avci |
| Sað Açýklýk: | 04h46m30.72s |
| Yükselim: | +03°58'09.0" |
| Görünürdeki Parlaklýk: | 9.652 |
| özdevim Sað Açýklýk: | -9.6 |
| özdevim Yükselim: | 9.1 |
| B-T magnitude: | 10.068 |
| V-T magnitude: | 9.687 |
Kataloglar ve belirtme:
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