Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 113
... Average number of groups at one observation Average latitude of spots north of equator Average latitude of spots south of equator These figures show the expected trend toward minimum of the sun - spot cycle , in diminution in average ...
... Average number of groups at one observation Average latitude of spots north of equator Average latitude of spots south of equator These figures show the expected trend toward minimum of the sun - spot cycle , in diminution in average ...
Page 241
... average will not be seriously affected . The complete rejection of the value which depends on the secular parallax , and the increase of weight of the Sagittarius novae to unity , will only change the mean to -6.9 . Except for actual ...
... average will not be seriously affected . The complete rejection of the value which depends on the secular parallax , and the increase of weight of the Sagittarius novae to unity , will only change the mean to -6.9 . Except for actual ...
Page 242
... average magnitude 18.4 . The exclusion of these would revise the mean apparent magnitude of the remaining 43 objects ( mostly fast , but still including some probably slow novae which were insufficiently ob- served ) to 16.1 . Then , in ...
... average magnitude 18.4 . The exclusion of these would revise the mean apparent magnitude of the remaining 43 objects ( mostly fast , but still including some probably slow novae which were insufficiently ob- served ) to 16.1 . Then , in ...
Contents
Bolide observed A bright 451 | 114 |
STELLAR DISTANCES FREDERICK SLOCUM | 117 |
METEORITIC FOSSILS BEN HUR WILSON | 125 |
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absolute magnitude American American Astronomical Society American Meteor Society angle appeared Astronomical Society atmosphere average azimuth changes College comets constellation craters Cygni diameter direction distance earth eclipse end point ephemeris errors fireball galactic galaxies given height horizon indicated instruments July June Jupiter latitude Lick Observatory light curve longitude luminosity lunar Mare Imbrium Mars maxima maximum mean measured meridian meteor meteorite method miles minimum moon motion nebulae Notes novae object observations Observatory obtained OCCULTATIONS Ohio orbit paper parallax path perihelion phenomena photographs planet POPULAR ASTRONOMY position predicted present probably problem projectile radiation region reports rotation seen solar spectra spectral type spectrum SS Cygni stellar sunspot surface Table telescope tion train University Variable Star variation velocity Venus visible Yerkes Observatory zenith Zodiacal Light