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SEPTEMBER 2016 SKY EVENTS CALENDAR

The ASO Monthly Calendar of Events and Astronomical Data
Calendar is based on the "Space Calendar" data presented by the
NASA Jet Propulsion Laboratory (JPL) http://www.jpl.nasa.gov/calendar/ and the Arkansas Sky Observatories  www.arksky.org Team.
If you would like for us to include your star parties or events, please send details via the CONTACT US button on the home page of ASO.


The Planets for Septemer:
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Mercury - Mercury is very close to the sun for most of the month and not easily visible  - in LEO

Venus - our brightest planet will be unobservable throughout this month, moving ever so closer to the sun from our planet Earth. - in VIRGO

Mars - Now just east of slightly dimmer SATURN and slowly moving eastward to increase that distance every successive night in September. Compare the ruddy red color of Mars with the yellow of Saturn - in SCORPIUS/Ophiuchus

Jupiter - Now setting only minutes after the sun, our largest planet is embedded in strong twilight and will not be visible for several months; you can cross Jupiter off of your observing lists until winter and Spring 2017 when it will reappear in early morning dawn skies - in VIRGO

Saturn - Now nearly overhead just as dusk approaches, look for the moon to be very close to this bright planet on the 8th; Mars is only a short distance to the EAST (left) and the distance between the two of them increases as the month progresses; setting around 9-10 p.m. this month and fairly unfavorable due to the low altitude. - in SCORPIUS

Uranus - distant planet Uranus rises about 9 p.m. local time and is south of overhead by dawn's fist light.  It shines at magnitude 5.9, bright enough to spot in good binoculars if one knows where to look; use a good planetarium sky program or GO TO telescope to locate this distant world; by sunrise it is high in dark skies and will show a faint, blue disk in large telescopes - in PISCES

Neptune - At OPPOSITION on Sept. 3 (see below) - look for faint Neptune in large telescopes at midmonth south of overhead about 2 a.m. local time.(mag. 7.6); it will be quite close to this 73 Lamba Aquarii (mag. 3.7) all month, thereby making it a bit easier to spot this distant world. - in AQUARIUS

Pluto - at magnitude 14.1, our most distant planet (yes....it is a planet) is very low in southern skies, southwest of overhead about 2:30 a.m. local time; note that at mid-month this distant planet will appear just a couple of degrees to the right (west) of bright 2.9 mag. Pi Sagittarii - only 12 inch and larger telescopes can spot this world visually.  - in SAGITTARIUS

NOTE:  for locating all of the faint planets I highly recommend a good computer planetarium program or a suitalbe Sky APP for your smart devices!

Comet Possiblities for September:
There are dozens of observable comets visible every month, in every part of the sky. 
For September 2016 there are NO bright comets, even for modest telescopes, visible.  However that can always change quickly, so check the "Alerts" section of ASO often. 

A moderate-sized telescope and CCD camera can easily record comets down to magnitude 18, of which there will be a good selection every night, provided that you know WHERE in the sky they are.  Thus a good PC planetarium program with your GO TO telescope or to plot visually is essential.  The comets can be updated in yor programs daily by downloading the current data into your database from the Minor Planet Center (MPC) via the link:
http://www.minorplanetcenter.net/iau/Ephemerides/SoftwareEls.html
This will allow access to all visible comets for any given date.

In addition, a listing of "Observable Comets" is availale from MPC from the link:  http://www.minorplanetcenter.net/iau/lists/LastCometObs.html
In the case of a new and exciting/bright comet that may unexpected enter our skies, ALWAYS refer to the ALERTS link on the ASO Home Page.

For the latest observations, magnitudes and physical characteristics of most of the best comets, always look to the ASO Comet Database for accurate information:
  http://arksky.org/comet-data

METEOR SHOWERS for September  2016:
 
Observe when the moon does not interfere and attempt to observe AFTER midnight for most meteors to be seen!  For August there is, of course, the famous PERSEID METEOR SHOWER, some of which provide for wonderful summer sky shows, provided that the light of the moon does not interfere.  However, as with a months and times during the year, observers should always be aware that new sporadic meteor showers can occur at anytime from seemingly unknown sources and radiants.  Unfortunately for 2016, the full moon occurs at midmonth, which means that pretty much at least some of these showers are going to be less than impressive in terms of faint meteors.

For a full description of how to observe meteors, how to contribute and what to look for, see the ASO GUIDE at:
http://arksky.org/aso/aso-guides/aso-observational-guides/713-all-about-meteors-the-perseid-meteor-shower

The advent of cripser skies and cooler temperatures lure many skywatchers outdoors during September to view the impending autumn splendors of the Heavens.  While the day of September, worldwide, can be hot and unbearable, the nights can cool remarkably, resulting in some long glances and time spent among the cosmos.  Most of the meteor showers for September are modest, minor streams with few meteors; however some are upredictable and thus the sky is worth monitoring during the times posted below!
 
September 1 - AURIGID meteors (??) - The moon will be absent from the sky all night.  The meteor stream "should be" highest in the sky; rising in the NE sky about end end of dusk.  Note however that meteors from the Aurigid shower have ONLY been seen one year!  That was 1935 when about 30-34 meteors per hour were seen, all very bright and quite rapid as they transited across the sky.  Observations of this curious "one-time" (?) meteor shower, centered at about RA 05h 38m / DEC +42 degrees (in Auriga) are obviously very desired.  Get out after midnight and confirm this meteor shower for us!  Most are calling for this to be a good shower this year, but do plan to observe throughout the night of August 31 and morning of September 1!!

September 6  - LYNCID meteors - from the constellation of LYNX, the meteor shower is about as small and sparce as the constellation from which the radiant of these meteors appears to originate.  This was once a magnificent sky show, literally raining meteors through the sky; in 1037 and 1063 it was logged as "the rain of stars" by Korean skywatchers.  However, little of this seems to be left.  High in the sky during morning hours, look for the meteors coming from RA 06h 40m / DEC +58 degrees; the moon will be absent from the sky when this shower should be at its bestt, so observers will likely have a good opportunity to see if any revival of this meteor shower can be seen; note that the radiant does not rise until well after midnight.  Please report any significant sightings of Lyncids at once to the ASO!

September 7 - EPSILON PERSEID meteors - This is usually a fairly dependable group of meteors producing perhaps 12-15 meteors per hour very low in the NE sky about 10 p.m. when the shower should be its best.....moon sets early, so plan to see what you can of this, and observe this shower pretty much before midnight since it is "circumpolar" and high in northern skies throughout the night for northern hemisphere observers....remember that there will still be some stray PERSEID meteors (see August calendar here on ASO) coming from near the same direction, so it is very easy to get these confused with the Epsilon Perseid shower unless one is very familiar with the sky.


September 14 - SEPT. TAURID METEORS - This is an "iffy" meteor shower, and most experts are calling for a good showing, particularly with the nearly full moon in the sky;   look for these meteors emanating from Taurus in the early morning hours of Sept. 14, which will be about midway from the eastern horizon to overhead after midnight.  About 13 members of this shower were confirmed in 2002, nearly three quarters of which were about 3rd magnitude; there are actually TWO radiants to this unusual meteor shower, both close together in Taurus;  a very poor year for these elusive meteors since the moon will be full and dominate the sky;  This shower rises in the east about midnight

September 21 - KAPPA AQUARID meteors - this meteor shower is also directly south of overhead (northern hemisphere) about 11 p.m. local time, and continues until the 22nd way past dawn. This is a poor year to observe this lesser meteor shower, since the third quarter moon will be in the sky until after midnight.

Setember 23 - ALPHA AURIGID meteors - moonlight will be a factor in late morning skies for this year's Alpha Aurigid meteors and hence even the faintest of these meteors are likely to be not seen in early morning hours; evening and around midnight are favored.  The radiant  rises in the NE sky about 8 p.m. local time and reaches nearly overhead about 5 a.m. very close to the position of this year's 3rd quarter moon and when the most meteors are usually seen.  These meteors are very fast and frequently leave fantastic trains of smoke in their wakes....Because the shower is in high northern skies, US observers can plan to view these high northern meteors all night long.

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IMPORTANT DAILY SKY AND SCIENCE EVENTS

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Wishing you clearest skies and brightest comets.....

Dr. Clay
Arkansas Sky Observatories
10 Observatory Hill Drive, Petit Jean Mt.
MPC/cbat Obs. H41 / Petit Jean Mountain
MPC/cbat Obs. H45 / Petit Jean Mountain South
MPC/cbat Obs. H43 / Conway
MPC/cbat Obs. H44 / Cascade Mountain
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