Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 473
On the Brightness of Comets By N. T. BOBROVNIKOFF INTRODUCTION The problem of the brightness of comets has two aspects . We may try to determine the law of the variation in the brightness of comets depending on their heliocentric and ...
On the Brightness of Comets By N. T. BOBROVNIKOFF INTRODUCTION The problem of the brightness of comets has two aspects . We may try to determine the law of the variation in the brightness of comets depending on their heliocentric and ...
Page 477
... comets in the statistical sense , although some individual comets may greatly depart from it . The variation in the visual magnitude of comets considered here was from -1.1 ( comet 1861 II ) to 14.0 ( comet 1910 II ) , a range of 15 ...
... comets in the statistical sense , although some individual comets may greatly depart from it . The variation in the visual magnitude of comets considered here was from -1.1 ( comet 1861 II ) to 14.0 ( comet 1910 II ) , a range of 15 ...
Page 488
... comet 1861 II . The observational material is obviously insufficient to establish any correlation between the various periodic phenomena in comets . The existence of periods of different length even in the same comet ( as in 1910 II ) ...
... comet 1861 II . The observational material is obviously insufficient to establish any correlation between the various periodic phenomena in comets . The existence of periods of different length even in the same comet ( as in 1910 II ) ...
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