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Home -> Astronomy News -> Events -> September 2015
Post Info TOPIC: September 2015
Blobrana


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RE: September 2015
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Meteor Showers

There are no major meteor showers this month...
September is a month with the best sporadic rates and a few mysterious minor showers.
The Alpha Aurigids are active from Aug. 25 to Sept. 5, normally with a ZHR of 10. this year it may be quite active 

The Delta Aquarids are active September 5 thru October 10, with a ZHR of 6. It is on view until dawn. Faint, swift meteors are likely and the brighter ones may leave persistent trains.
These two form part of what is known as the Auriga-Cassiopiea-Perseus-Aries-Triangulum radiants, active from late August until mid-October.

The Piscids, active September 1 - 30, have a ZHR of 3.

The Sextanids are active September 9 through October 9. Though, this one is more of a radio/radar shower.

A new meteor shower, called the September Taurids, might peak this month on the evening of September 13 - 14.  The exact date and time of maximum activity, however, are uncertain. The radiant, which lies between the Pleiades and Hyades star clusters, produces only 7 meteors per hour, with an average brightness of magnitude 2.7.

ShowerActivity PeriodMaximumRadiantVelocityZHR
  DateR.A.Dec.km/s 
Aug 25 - Sept. 5
1 September
5.5h
41°
66.0km/s
10
October Arietids
Sept-Oct
8 September
    
Piscids
Sept 1 - 30
19 September
0.7h
9.2°
30.0km/s
5
SextanidsSept-Oct25 September    
Andromedids 26 September 58.1°59.3km/s 
Gamma Piscids23 - 2828 September23.4h11.0°19.2km/s4
 
29 September
12.6h
-16.0°
8.6km/s
3

 



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Blobrana


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Mercury: at magnitude 0.1, starts the month in the constellation of Virgo. Mercury is at its Greatest Elongation (27° East) on the 4th. Mercury is at Dichotomy (Half phase) on the 7th. The planet is close (separation 8.3°) to Spica on the 17th. Mercury is at inferior Conjunction on the 30th September 2015.   
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Venus: is at magnitude -4.5. The planet is in the morning skies in the constellation Cancer at the start of the month. The planet is near (separation 8.7°) to Mars on the 2nd. The Moon is close (separation 2°) to Venus on the 10th September 2015.

(On September 1st, RA= 8h59m29s  Dec= +9°09.7' (J2000) Distance=0.326AU  Phase k=9%  Diameter=51.2")

 phase.gif
 

Earth: Maximum Northerly heliographic latitude of the Earth at 22:47 UT, 8th September: Look towards the solar North Pole. A partial Solar Eclipse is at 06:54 UT 13th. The September Equinox is at 08:20.6 UT, 23rd September. There is a Total Lunar Eclipse at 02:10 UT, 28th September 2015.

The Moon: Last Quarter Moon is at 09:54.0 UT, 5th September, 2015.  New Moon is at 06:41.3 UT, 13th September. Lunar apogee is at 11:42.0 UT, 14th September. First Quarter Moon is at 08:59.1 UT, 21st September. Lunar perigee is at 01:51.9 UT, 28th September. Full moon at 02:50.5 UT, 28th September. 

Mars: at magnitude 1.8 starts the month in the constellation Cancer. The Moon is close (separation 6.5°) to Mars on the 11th. The planet is close (separation 47.1') to Regulus on the 25th.

(On September 2nd, RA= 9h12m23s  Dec=+17°20.7' (J2000) Distance=2.506AU  Phase k=98%  Diameter=3.7")

Jupiter: is in the constellation Leo. At magnitude -1.8, the planet is observable in the morning sky later this month. The Moon is close (separation 4°) to Jupiter on the 12th.

Transit times of Jupiter's satellites and the Great Red Spot are posted in separate threads.
(On September 1st, RA=10h26m46s  Dec=+10°40.6' (J2000) Distance=6.395AU  Diameter=30.8")

Saturn: at magnitude 0.6 sits in the constellation Libra. The Moon is close (separation 4.5°) to Saturn on the 18th. Saturn's rings are tilted ~23 degrees to our line of sight.
(On September 1st, RA=15h48m03s  Dec=-18°05.0' (J2000) Distance=10.120AU  Diameter=16.3")

Uranus: is in the constellation Pisces. Uranus at magnitude 5.7, has a bluish-green hue and appears 3.6 arcseconds wide.  
(On September 1st, RA= 1h13m54s  Dec= +7°06.2' (J2000) Distance=19.212AU  Diameter=3.6")

Neptune: is at magnitude 7.8 in the constellation Aquarius. Neptune is at Opposition on the 1st.  The planet is best seen from 21:00 - 03:20 UT. 
(On September 1st, RA=22h40m29s  Dec= -9°15.9' (J2000) Distance=28.954AU  Diameter=2.3")

Pluto: is in the constellation Sagittarius (mag 14.1). Normally, a finder chart is necessary to help in identifying the 0.13" diameter dwarf planet. The dwarf planet is Stationary (resuming Prograde motion) on the 25th.
(On September 1st, RA=18h55m14s  Dec=-20°57.6' (J2000) Distance=32.364AU  Diameter=0.1")

The Sun enters the zodiac sign of Libra at 08:21 UT on the 23rd September 2015.



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