BRAS small web logoMonthly Observing Information

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This page provides charts, and text concerning what is visible in the night sky during the month noted. All information is for Baton Rouge, Louisiana, but they can still provide useful information for most other areas of the U.S.A. Sky charts, Saturn ring plane, and Venus phase images are for Midnight, on the 15th day of the month. Sky charts are 100 degree field of view, and show objects down to 12th magnitude. Times in the text information are in 24 hour format and have been adjusted for Daylight Savings Time. Subtract 12 hours from those over 12 to get the equivalent PM. RA and DEC given are for Epoch 2000.

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Baton Rouge Clear Sky Clock
Click on image for more info and details. This clock is for the Baton Rouge area only.

Baton Rouge Clear Sky Clock

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September

Moon Calendar

Moon Calendar image

Sky charts

View/download sky chart north image View/download sky chart south image

View/download sky chart east image View/download sky chart west image

North South East West

Saturn’s Ring Plane

Saturn ring plane image

Venus Phase

Venus phase image

Sun and Moon Rise and Set

  Date       Moonrise   Moonset   Sunrise   Sunset   Twilight  Twilight
------------ --------- --------- --------- --------- --------- ---------
9/1/2018         23:32     12:15     06:41     19:28     05:19     20:50
9/2/2018        ------     13:17     06:42     19:27     05:20     20:49
9/3/2018         00:16     14:18     06:42     19:25     05:20     20:47
9/4/2018         01:07     15:21     06:43     19:24     05:21     20:46
9/5/2018         02:05     16:20     06:43     19:23     05:22     20:44
9/6/2018         03:08     17:17     06:44     19:22     05:22     20:43
9/7/2018         04:14     18:08     06:45     19:20     05:23     20:42
9/8/2018         05:23     18:55     06:45     19:19     05:24     20:40
9/9/2018         06:31     19:38     06:46     19:18     05:25     20:39
9/10/2018        07:38     20:17     06:46     19:17     05:25     20:37
9/11/2018        08:42     20:55     06:47     19:15     05:26     20:36
9/12/2018        09:45     21:33     06:47     19:14     05:27     20:35
9/13/2018        10:45     22:11     06:48     19:13     05:27     20:33
9/14/2018        11:44     22:51     06:49     19:12     05:28     20:32
9/15/2018        12:41     23:33     06:49     19:10     05:29     20:31
9/16/2018        13:36    ------     06:50     19:09     05:29     20:29
9/17/2018        14:28     00:17     06:50     19:08     05:30     20:28
9/18/2018        15:17     01:04     06:51     19:06     05:31     20:26
9/19/2018        16:02     01:53     06:51     19:05     05:31     20:25
9/20/2018        16:44     02:45     06:52     19:04     05:32     20:24
9/21/2018        17:23     03:38     06:52     19:03     05:32     20:22
9/22/2018        17:59     04:31     06:53     19:01     05:33     20:21
9/23/2018        18:34     05:26     06:54     19:00     05:34     20:20
9/24/2018        19:08     06:20     06:54     18:59     05:34     20:18
9/25/2018        19:41     07:16     06:55     18:57     05:35     20:17
9/26/2018        20:15     08:13     06:55     18:56     05:36     20:16
9/27/2018        20:52     09:11     06:56     18:55     05:36     20:15
9/28/2018        21:31     10:10     06:56     18:54     05:37     20:13
9/29/2018        22:14     11:11     06:57     18:52     05:37     20:12
9/30/2018        23:03     12:13     06:58     18:51     05:38     20:11

Information and images in this section from The Sky6 Professional

Solar System Information

              Planet View Info Report for  9/ 1/2018 to  9/30/2018

                                    Mercury

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018  5:23 18:41    9h36m46s   14°58'46"   16°57'21"   0.648    1.05650
 9/ 8/2018  5:52 18:53   10h23m53s   11°45'26"   11°57'58"   0.876    1.22440
 9/15/2018  6:26 19:03   11h13m50s    6°53'51"    5°42'10"   0.979    1.33593
 9/22/2018  6:59 19:09   12h01m18s    1°25'07"    1°38'01"   0.999    1.39226
 9/29/2018  7:28 19:13   12h45m35s   -4°02'34"    6°18'12"   0.983    1.40725

                                     Venus

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 10:13 21:18   13h22m08s  -12°06'19"   45°03'54"   0.403    0.57225
 9/ 8/2018 10:12 21:03   13h41m47s  -14°55'56"   43°50'05"   0.357    0.51876
 9/15/2018 10:07 20:45   13h58m55s  -17°26'24"   41°51'58"   0.306    0.46707
 9/22/2018  9:58 20:26   14h12m33s  -19°32'00"   38°55'49"   0.251    0.41800
 9/29/2018  9:43 20:02   14h21m21s  -21°04'59"   34°44'12"   0.190    0.37281

                                      Mars

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 17:33  3:28   20h08m37s  -25°56'59"  139°52'43"   0.941    0.44886
 9/ 8/2018 17:07  3:05   20h11m26s  -25°23'45"  133°56'11"   0.926    0.47694
 9/15/2018 16:43  2:45   20h16m52s  -24°41'02"  128°33'40"   0.911    0.50872
 9/22/2018 16:21  2:28   20h24m38s  -23°49'49"  123°42'19"   0.898    0.54362
 9/29/2018 16:00  2:13   20h34m21s  -22°50'50"  119°17'37"   0.887    0.58122

                                    Jupiter

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 11:58 22:44   14h59m49s  -16°08'29"   68°38'48"   0.992    5.66742
 9/ 8/2018 11:35 22:19   15h03m49s  -16°26'40"   62°52'14"   0.993    5.76511
 9/15/2018 11:13 21:55   15h08m12s  -16°45'57"   57°09'38"   0.994    5.85775
 9/22/2018 10:51 21:32   15h12m56s  -17°06'06"   51°30'36"   0.995    5.94439
 9/29/2018 10:30 21:08   15h17m59s  -17°26'52"   45°54'28"   0.996    6.02428

                                     Saturn

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 15:26  1:40   18h10m50s  -22°41'20"  113°58'14"   0.998    9.63062
 9/ 8/2018 14:58  1:12   18h10m45s  -22°42'23"  107°10'02"   0.998    9.73928
 9/15/2018 14:31  0:45   18h11m01s  -22°43'21"  100°25'05"   0.998    9.85206
 9/22/2018 14:04  0:18   18h11m37s  -22°44'12"   93°43'34"   0.998    9.96727
 9/29/2018 13:38 23:48   18h12m33s  -22°44'55"   87°05'14"   0.998   10.08333

                                     Uranus

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 21:50 10:54    2h01m19s   11°45'19"  126°12'24"   1.000   19.26487
 9/ 8/2018 21:22 10:26    2h00m44s   11°42'06"  133°08'31"   1.000   19.17434
 9/15/2018 20:54  9:57    2h00m02s   11°38'13"  140°08'07"   1.000   19.09372
 9/22/2018 20:26  9:29    1h59m13s   11°33'44"  147°10'47"   1.000   19.02435
 9/29/2018 19:58  9:00    1h58m19s   11°28'45"  154°16'24"   1.000   18.96729

                                    Neptune

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 19:41  7:16   23h07m19s   -6°43'25"  173°11'08"   1.000   28.93849
 9/ 8/2018 19:13  6:48   23h06m36s   -6°47'57"  178°58'22"   1.000   28.93333
 9/15/2018 18:45  6:19   23h05m54s   -6°52'28"  172°41'41"   1.000   28.94279
 9/22/2018 18:17  5:51   23h05m12s   -6°56'51"  165°42'32"   1.000   28.96678
 9/29/2018 17:49  5:23   23h04m31s   -7°01'02"  158°41'00"   1.000   29.00493

                                     Pluto

Date       Rise  Set     RA         Dec         Elongation   Ill Fr  DIST(AU)

 9/ 1/2018 16:35  2:53   19h22m06s  -22°00'28"  130°26'27"   1.000   32.96957
 9/ 8/2018 16:07  2:25   19h21m44s  -22°01'51"  123°34'16"   1.000   33.06991
 9/15/2018 15:39  1:57   19h21m28s  -22°03'05"  116°41'50"   1.000   33.17824
 9/22/2018 15:12  1:29   19h21m18s  -22°04'06"  109°49'24"   1.000   33.29299
 9/29/2018 14:44  1:02   19h21m13s  -22°04'56"  102°56'53"   1.000   33.41255


                         Planet Apsides Report for 2018

Mercury
   9/ 2/2018  Perihelion   Distance from Sun:   0.31 AU

Venus
   9/ 5/2018  Aphelion     Distance from Sun:   0.73 AU

Mars
   9/16/2018  Perihelion   Distance from Sun:   1.38 AU


       Planet Conjunction/Opposition Report for  9/ 1/2018 to  9/30/2018

Mercury

  Date        Hour   Event

   9/20/2018  21     Superior Conjunction               

Neptune

  Date        Hour   Event

   9/ 7/2018  18     Opposition                         


                               Planet Data Report

Planet       Mean Dist   Period of          Inclination     Equatorial
             From Sun    Revolution                         Diameter
             (AU)                                           (km)

Mercury       0.39        88    days         7°               4880
Venus         0.72       224.7  days         3.4°            12100
Earth         1.00       365.24 days         0°              12756
Mars          1.52       687    days         1.9°             6794
Jupiter       5.20        11.86 years        1.3°           143200
Saturn        9.54        29.46 years        2.5°           120000
Uranus       19.18        84    years        0.8°            52290
Neptune      30.06       165    years        1.8°            50450
Pluto        39.44       248    years       17.2°             2200-2300


                Moon Apsides Report for  9/ 1/2018 to  9/30/2018

Date          Hour    Apsis      Distance (km)    Diameter

 9/ 7/2018    20      Perigee    361351           0.5511°
 9/19/2018    20      Apogee     404876           0.4919°

 
                 Moon Nodes Report for  9/ 1/2018 to  9/30/2018

Date          Time     Node          Illuminated Fraction

 9/ 6/2018    17:41    Ascending     0.13
 9/20/2018     4:29    Descending    0.79

 
               Meteor Showers Report for  9/ 1/2018 to  9/30/2018

Date        Meteor Shower       ZHR  RA      DEC   Illum. Frac.  Longitude

 9/ 8/2018  Piscids             10    0h36m    7°  0.01          166°
 9/20/2018  Piscids              5    0h24m    0°  0.83          178°

 
                  Twilight Report for  9/ 1/2018 to  9/30/2018

Date         Sun            Astronomical   Nautical       Civil
             Rise   Set     Begin  End     Begin  End     Begin  End

 9/ 1/2018    6:41  19:27    5:15  20:54    5:44  20:25    6:13  19:56
 9/ 8/2018    6:45  19:19    5:20  20:44    5:49  20:15    6:17  19:47
 9/15/2018    6:49  19:10    5:25  20:35    5:53  20:06    6:21  19:38
 9/22/2018    6:53  19:01    5:29  20:25    5:57  19:57    6:25  19:29
 9/29/2018    6:57  18:52    5:34  20:16    6:02  19:48    6:29  19:20

Information for this section is from Astronomy Lab 2.03

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Last updated on Monday, September 3, 2018, 03:09 PM.