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Astronomical
Phenomenon
Oktober 2010
Mira : Interesting Variable
Star
At night the sky and no moon light we can see many stars
are scattered to decorate the sky. At
first glance the stars seem almost like a bright point
of light there, and there are faint. Actually,
the stars are not the same, no different from its size,
is different from the brightness, there are pairs and
double. Therefore,
astronomers have been categorizing the stars in the sky
in several categories such as the star turn (variable
star). Stars
are stars that have changed the brightness of the
ever-changing from time to time. These brightness
changes may take several days, weeks, months or years. Changes
in the brightness of these stars can be observed by
comparison with the stars near the brightness of a
steady and unchanging.
At night the sky and no moon light we can see many stars
are scattered to decorate the sky. At
first glance the stars seem almost like a bright point
of light there, and there are faint. Actually,
the stars are not the same, no different from its size,
is different from the brightness, there are pairs and
double. Therefore,
astronomers have been categorizing the stars in the sky
in several categories such as the star turn (variable
star). Stars
are stars that have changed the brightness of the
ever-changing from time to time. These brightness
changes may take several days, weeks, months or years. Changes
in the brightness of these stars can be observed by
comparison with the stars near the brightness of a
steady and unchanging.
Any large red star of such brightness changes and the
changes in brightness than 100 days, categorized as a
star turn in conjunction with the Mira variable star
discovered first.This
month we have the opportunity to observe the star Mira
in the constellation CETUS. If
we look at this constellation using binoculars, Mira
looked red and brightness this time with a magnitude of
6.4. It
is a binary star located 420 light years far from Earth. Cetus
Constellation is a large constellation and described as
a whale. It
covers a vast area of the sky to the boundary of the
constellation of Pisces, Aries, and close to the line
Ikliptik the path of the Sun. The
planets are orbiting the Sun are also in this
constellation. Mira star is rising in the east at about
22:45 at night and early this month, and is high in the
sky after midnight. At
11.00 pm, 23 day, we can determine the position of Mira
in the constellation CETUS easier because at the time
the moon is in the constellation Aries. Mira
stars are in the right side of the Moon at an angle of
20 degrees of separation with Mira.
Figure: Illustration of changes in the size of Mira
stars in one round of expansion and contraction.
The position of the Moon in the constellation Aries, and
Mira in the constellation CETUS at 11:00 pm October 23,
2010
This month, Jupiter still dominate the sky, after the
month of September it had Istqbal and that is closest to
Earth in 12 years. It
can be seen throughout the night and in the middle of
the sky at midnight. This
makes Jupiter is the brightest object in the night sky
except the Moon. By
using binoculars or small telescopes we can see the
satellite and the satellite-lines in their atmospheres. The
beginning of the month, it rises in the east at 18:20
and at the end of the month, at 16:15. The
planet will be in the middle of the sky at 00:20 and
22:15 hours at the beginning and end of each month.
Venus
will end its control in the western sky late this month,
after which it will move to the east in the early
morning sky. On
October 1 Venus and Mars is at 6.5 degrees angle of
separation in the western sky. Located
at an altitude of Mars from an altitude of 29 degrees
west horizon at sunset. On
October 10 Mars and the crescent 3 Zulkaedah 1431 near
the western sky at an angle of 6 degrees of separation. Mars
is under the crescent moon at an altitude of 26 degrees
from the horizon when the sun goes down.
On October 8, Ijtimak Sun, Moon and Earth occurred at
02:45 hours. Ijtimak
is valid according to the system marks the end of the
Islamic calendar and is on 29 Shawwal 1431. In
the afternoon the sun is setting on the Moon will be at
19:01 and sunset at 19:26 hours at the Tanjung Bidara,
Melaka. When
the sun goes down the new moon at an altitude of 4.7
degrees and 16.3 hours of age. In the evening we had the
opportunity to observe the new moon, new moon, whether
visible or not depending on the weather in the western
horizon, whether cloudy or clear skies. At
the same time in the evening we had the opportunity to
see Mars and Venus. Both
are higher than the new moon, at an altitude of 27
degrees and 21 degrees respectively.
 
The position of the new moon, Venus and Mars when the
sun goes down on October 8, 2010. The
brightness is very dim because the new moon is the sun
light scattering (small picture)
On October 21, Earth will enter the path of comet
1P/Halley container. Meteor
shower occurs when Earth is expected to enter a password
that contains the remaining relics of comet Halley. Halley's
comet approached Earth in 1986, this comet has an orbit
period of 75-76 years. This
comet ever approached Earth in 1456, 1531, 1607 and
1682. This
comet was named after the people who predicted the
return of the comet is approaching Earth's orbit in 1758
that Edmund Halley. Unfortunately,
he himself did not have the opportunity to see the comet
during its lifetime. This
phenomenon is called a meteor was Orionids meteor as
meteors radians from the Orion constellation. Meteor
phenomenon has also happened before the meteors Perseids
in August (see Cosmic House, August 2010).This
phenomenon was quite challenging meteor enthusiasts and
members of amateur astronomy since the night there was
light from the moon is almost full. Light
of the Moon that could lead to a clear night sky and
makes it difficult for us to see the light of a meteor.
In this, the night sky was also adorned by
a constellation, constellations, planets and other
celestial objects. In the northern sky, the
constellation of Pegasus with the four stars that form a
square still dominate the sky. Cygnus constellation that
resembles a goose with a long neck Deneb as the stars
are still visible in the northern sky. The
bright star Vega in the constellation Lyra the magnitude
of 00:03 is also easily seen. Cassiopiea constellation
known for its attractive and easy to shape like the
letter "W" adorn the skies this time around. So is the
constellation Aries in the low eastern sky in the early
months of the primary star as the star Hamal the
brightness at magnitude 2.0. While
the constellation of stars that have changed CETUS
famous, Mira, is partly in the northern sky in the sky
south.
In the southern sky, the constellation of
Sagittarius
and
Capricorn still adorn the southern sky. Sagittarius
has moved into the western sky and the constellation
Scorpio has left the western sky. Constellation
Pisces Austrinus Capricon and is close to the middle of
the sky early in the month. Formalhaut
star bright star in the constellation of Piscis
Austrinus with easy to recognize the magnitude of
1:17.Similarly, the brightest star Achernar in the
southern sky this month with the magnitude of 0:45.
The beginning of this month before the
dawn in the eastern sky the constellation of Orion, or
hunter also has to be high in the sky. Constellations
are easily recognizable as a line of three stars in
which the star Mintaka, Al Nilam and Al-Nitak and a
guide for Muslims to mengganggarkan Qiblah. Similarly,
the star Sirius is the brightest star in the sky in the
constellation Canis Major can be seen easily.
Milky Way galaxy lines across the sky of the
Western forces to the north-east and is visible to the
naked eye if the sky is not cloudy and there is no
interference from lights or the Moon. They
look like thin clouds when viewed with binoculars and
we'll see scattered stars look very fine. To identify
sky objects this month we can use a star map in October
2010. This
star map shows the stars, planets, constellations and
the Milky Way galaxy. Phases
of the moon are shown referring to the date of which is
labeled. Size
indicates the brightness of stars, bright stars are
shown with large point size. Stars
are the stars shown bright with a magnitude of less than
4. This star
map can be used for the sky in Malaysia at 10.00 pm in
early October, at 9.00 pm and 8.00 pm mid-October at the
end of October. The
planet is shown to early October.
User night sky observations using the star map
Observations of the northern sky
-
Stand facing North.
-
Hold the star map right on the head. Hold
your right hand on the labels A and B label the left
hand on the star map. Make
sure the center of the star map on the right and
head north in the direction of the star map with the
true North.
If you observe the beginning of October, 10.00 pm,
you will find the bright star Vega in the western
sky. Try
to identify the constellation of Pegasus with a
shape like a large square in the middle of the sky. Begin
to recognize the star of stars that are bright and
easily recognizable, such as Vega and Deneb. Next
you can identify planets, stars and constellations
using star maps
Observations of the southern sky
-
Stand facing south.
-
Hold the star map right on the head. Hold
your right hand on the labels B and hold your left
hand on the labels A star map. Make sure that the
star center of the map just above the head and the
South in the direction of the star map with the real
South. If
the observations at the beginning of October, we can
see the constellations of Sagittarius and Capricon.
Observations of the night sky should be bright at
night, less cloudy or overcast. Avoid
the disturbance of light with the lights out or
close the page. When
we're in a dark environment that we will be able to
see the sky better. Wait
a few minutes until our eyes to adjust in the dark. The
longer we are in the dark stars that will be more to
be seen
Star map October 2010
Prepared by
Dr(H) Kassim bin Bahali
Head of Falak
Al-Khawarizmi Astronomy Complex
Malacca Mufti Department
Note : This article was
translate from its original language (Malay) using
Google Chrome. We apologize if this article contain any
spelling mistake.
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