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Post Info TOPIC: September 2010


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RE: September 2010
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Harvest moon: Not since 1991 has a full moon occurred on the same night as the fall equinox, and it won't happen again until 2029, wrote astronomer Tony Phillips in a NASA announcement.
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A harvest moon is the full moon closest to the autumnal equinox, which is when the sun sets due west and rises due east. And for the first time since 1991, these two events coincided in the small hours of Thursday, in the northern hemisphere.
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Tonight is the night of the Super Harvest Moon.
It's the last day of summer in the Northern Hemisphere, the beginning of the autumn season and it perfectly coincides with a full moon tonight. And it's the first time in almost 20 years that the stars have aligned for an event like this.

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According to NASA, on Tuesday planet Jupiter will come closer to the world at a distance of 368 million miles.
This was said to be the closest distance of Jupiter from the Earth since 1963.
The said phenomenon will repeat in 2022 or every 12 years.
However, it's strange this year because planet Uranus will also come closer to the world during this day.

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Object
Name
Close
Approach
Date
Miss
Distance
(AU)
Miss
Distance
(LD)
Estimated
Diameter*
H
(mag)
Relative
Velocity
(km/s)
(2010 RJ4) 2010-Sep-15 0.0614 23.9 44 m - 98 m 23.9 4.33
(2010 RB130) 2010-Sep-15 0.0353 13.7 42 m - 94 m 24.0 7.35
(2010 SX3) 2010-Sep-16 0.0698 27.2 27 m - 61 m 24.9 5.64
(2010 SF) 2010-Sep-16 0.0214 8.3 25 m - 55 m 25.2 5.80
(2010 RW30) 2010-Sep-17 0.1635 63.6 52 m - 120 m 23.5 8.75
(2010 RU30) 2010-Sep-17 0.1042 40.6 56 m - 130 m 23.4 9.07
(2010 SE) 2010-Sep-18 0.0145 5.7 35 m - 79 m 24.4 13.45
(2010 RA) 2010-Sep-19 0.0833 32.4 72 m - 160 m 22.9 9.82
(2010 RV3) 2010-Sep-19 0.0957 37.3 62 m - 140 m 23.2 28.73
(1997 GL3) 2010-Sep-20 0.0418 16.3 390 m - 870 m 19.2 24.87

Object
Name
Close
Approach
Date
Miss
Distance
(AU)
Miss
Distance
(LD)
Estimated
Diameter*
H
(mag)
Relative
Velocity
(km/s)
(2010 SD) 2010-Sep-23 0.0258 10.0 31 m - 69 m 24.7 10.27
(2010 SC) 2010-Sep-24 0.0285 11.1 16 m - 37 m 26.0 5.08
(2010 RK135) 2010-Sep-26 0.0696 27.1 20 m - 44 m 25.7 7.86
(2010 EX11) 2010-Sep-26 0.1286 50.1 39 m - 88 m 24.2 6.37
(2010 RJ64) 2010-Sep-26 0.1384 53.9 42 m - 94 m 24.0 4.93
(2010 SH) 2010-Sep-28 0.1501 58.4 60 m - 130 m 23.2 12.75
(2010 RD130) 2010-Sep-29 0.0384 14.9 21 m - 48 m 25.5 11.30
(2010 RT30) 2010-Sep-29 0.1482 57.7 60 m - 130 m 23.2 6.39


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Been outside at midnight lately? There's something you really need to see. Jupiter is approaching Earth for the closest encounter between the two planets in more than a decade--and it is dazzling.
The night of closest approach is Sept. 20-21st. This is also called "the night of opposition" because Jupiter will be opposite the sun, rising at sunset and soaring overhead at midnight. Among all denizens of the midnight sky, only the Moon itself will be brighter.

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Highlights

Autumnal Equinox
On this day, the Sun rises directly in the East, and sets directly in the West. At the South Pole, the Sun will begin to rise after six months of darkness.

Watch out for the zodiacal lights, also known as the false dawn, which maybe visible about two hours before sunrise from dark sites during the latter part of September.



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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 Aquarids 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 showerA new meteor shower,called the September Taurids, might peak this month on the evening of September 13 - 14, 2004. 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.

Shower Activity Period Maximum Radiant Velocity ZHR
Date R.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
Sextanids Sept-Oct 25 September
Andromedids 26 September 58.1 59.3km/s
Gamma Piscids 23 - 28 28 September 23.4h 11.0 19.2km/s 4
Pi Virginids
29 September
12.6h
-16.0
8.6km/s
3


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