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11 Struve 61 Cygni 70 Ophiuchi 9th magnitude angle of position Bessel binary star Bishop blue brighter Cancri change of angle Chronometer colour comet Comet-s R.A. components Dawes Decl declination detected by Sir difference discovered by Sir discovered by Struve Dist Dorpat double star discovered elements elongated Epoch equatoreal Excentricity faint h m s heliometer Herschel and South Hind Histoire Celeste indifferent Lalande-s Catalogue Madler Mean Annual Motion Mean N.P.D. Mean Right Ascension meridian micrometer Name of Star nebulosity night No.ofObs Node nucleus observations observatory Ophiuchi orbit Perihelion Passage Piscium planet position and distance Power pretty Professor proper motion refractor Remarks retrograde motion Rumker seen Semi-axis Major series of measures Serpentis Sidereal Clock Sir John Herschel Sir William Herschel small star South Villa star is Lalande Star of reference Stars white Stars yellow telescope tolerable unsatisfactory unsteady W. R. Dawes Weight White stars yellowish Yvon Villarceau