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HD 222798


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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.

A catalog of precise reference star positions for the astrometry network of the international comet P/Halley compaign
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987A&AS...71..525D&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Baliklar
Sað Açýklýk:23h43m38.62s
Yükselim:+06°28'27.8"
Görünürdeki Parlaklýk:9.076
özdevim Sað Açýklýk:-25.6
özdevim Yükselim:-45.3
B-T magnitude:9.789
V-T magnitude:9.135

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 222798
TYCHO-2 2000TYC 592-1296-1
USNO-A2.0USNO-A2 0900-20477119
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