Bibcode
Kidger, Mark R.
Referencia bibliográfica
Earth, Moon, and Planets, Volume 66, Issue 2, pp.231-238
Fecha de publicación:
1
1994
Número de citas
3
Número de citas referidas
3
Descripción
It is a typical lament of the astronomers of today that there has been a
dearth of bright comets in the 20th century and, particularly in its
latter half. Many go on to point out the large number of very bright
comets that were observed in the 18th and 19th century to reinforce the
unfavourable comparison with modern times. Analysis of bright naked eye
comet apparitions since 1750 demonstrates that there was a superavit of
very bright comets in the second half of the last century. The second
half of the twentieth century has shown exactly the average of one
bright naked eye comet per 2.5 years that has been seen over two and a
half centuries. The probable cause of theapparent lack of bright comets
is the great increase in light pollution and the shift of population to
the big cities. The observed statistics for the appearance of bright
comets show no obvious evidence of perturbations of the Kuiper Belt by
Planet X.