El Paso herald. (El Paso, Tex.) 1901-1931, 1912-07-03

that he excites the liveliest interest
even from those who give the heavens
but passing consideration.
No wonder then that Calico, in 1910
should have made Jupiter one of the
first objects in the heavens for in
vestigation with his newly invented
telescope which revealed to his de-
light and to the establishment of the
scientific world, that if had four sateI-
Ites revolving about ii. These sateI-
htes are never ending source of in
] terest to the beholder. They are desi--
mated by the Roman numerals L II III
/ and "; although named, their names
I are seldom used. No. i is $500 miles in
! diameter and 260, coo miles distant from
/ Jupiter, and its period of revolution
/ about the planet is less than two days
NO. II IS 2lQ0 miles in diameter and
/ as, 900 miles distant from its urinary
and has a period of about three and
one-half days. No III $500 miles in
diameter, 664,0 600 miles distant, and has
/ a period Of days and 4 hours No. "
Is 1000 miles in diameter. and $4,000
miles distant, and its period is Is DAYS.
Is hours and 80 minutes.
New Satellites.
Through the development Of the teIe-
scope and dry plate photography. four
other small satellites have been added
to this group The first of these. the
Fifth was discovered by Prof E E
barnard IN 1887 1t IS The innermost,
being 112, 900 miles distant from Jupi-
ter, and is 100 miles in diameter. It's
period is u hours. Nos. VI and VII
were discovered by Perrine, of the Lick
Observatory, in 19O4-5. Periods 251 and
$50 days -spectively.
BY means Of photography in Febru-
arys 1903, Prof ?. J. Melotte of the
Greenwich Observatory, discovered the
eighth satellite. The writer has an in
terestlng copy Of this photograph, and |
though enlarged three dian'eters. the |
object appears as a mere needle point. /
scarcely distinguishable to the naked |
eye It is of the 18th magnitude and 4
miles in diameter. It has a very re- (
J. rkable orbit much more distant 1
from its primary than any other known /
sateIlte, very eccentric and highly in |
cllneo' ana with retrograde motion /
or IN the opposite direction to that OF
all the other satellites OF Jupiter-thev
moving eastward and this little fellow
westward. Its nearest distance from
Jupiter is 100000 miles and its great.
est distance 10000, 600 miles and its
period of revolution is $50 DAYS.
Tt was for some time doubtful when (
FIRST discovered whether 1t was a satel-
lite or minor planet, and its true ma
ture was only determined after thee ]
months Of careful observation. The
object is so faint that it required an
exposure Of so minutes to produce it
on the plate
Jupiter in CIoudlike State.
Jupiter appears to be in a cloud like
state and shines by reflected light.
what II IS composed of is not known.
as IT simply reflects the suns ravs and
the spectroscope is therefore unable TO
snlighten US upon the subject Dusky I
belts mark the equatorial region. hut /
their cause is unknown. In 1878 a J
great red spot appeared south of its ,
equator, but il is not now visible.
Juplters mean distance from the
,a ar 1; Is ESQ, 600 600 miles and its aver J
-ge distance from the sun is $4,000
100 miles. 1t is flattened at the poles 2
nd ouIges at the equator, caused pre- I