B.R.A.S. 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

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

Kisatchie 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
------------ --------- --------- --------- --------- --------- ---------
9/1/2017         16:26     02:22     06:41     19:27     05:19     20:50
9/2/2017         17:12     03:13     06:42     19:26     05:20     20:48
9/3/2017         17:55     04:06     06:43     19:25     05:20     20:47
9/4/2017         18:35     05:02     06:43     19:24     05:21     20:45
9/5/2017         19:15     05:59     06:44     19:23     05:22     20:44
9/6/2017         19:53     06:58     06:44     19:21     05:23     20:43
9/7/2017         20:30     07:58     06:45     19:20     05:23     20:41
9/8/2017         21:09     08:58     06:45     19:19     05:24     20:40
9/9/2017         21:49     10:00     06:46     19:18     05:25     20:39
9/10/2017        22:31     11:03     06:46     19:16     05:25     20:37
9/11/2017        23:18     12:06     06:47     19:15     05:26     20:36
9/12/2017       ------     13:10     06:48     19:14     05:27     20:34
9/13/2017        00:08     14:11     06:48     19:12     05:27     20:33
9/14/2017        01:03     15:11     06:49     19:11     05:28     20:32
9/15/2017        02:02     16:06     06:49     19:10     05:29     20:30
9/16/2017        03:04     16:56     06:50     19:09     05:29     20:29
9/17/2017        04:07     17:42     06:50     19:07     05:30     20:27
9/18/2017        05:10     18:23     06:51     19:06     05:31     20:26
9/19/2017        06:11     19:02     06:51     19:05     05:31     20:25
9/20/2017        07:11     19:39     06:52     19:04     05:32     20:23
9/21/2017        08:08     20:15     06:53     19:02     05:33     20:22
9/22/2017        09:05     20:51     06:53     19:01     05:33     20:21
9/23/2017        10:01     21:27     06:54     19:00     05:34     20:19
9/24/2017        10:55     22:05     06:54     18:58     05:35     20:18
9/25/2017        11:48     22:45     06:55     18:57     05:35     20:17
9/26/2017        12:40     23:28     06:55     18:56     05:36     20:16
9/27/2017        13:31    ------     06:56     18:55     05:36     20:14
9/28/2017        14:19     00:14     06:57     18:53     05:37     20:13
9/29/2017        15:05     01:03     06:57     18:52     05:38     20:12
9/30/2017        15:49     01:55     06:58     18:51     05:38     20:10

Information and images in this section from The Sky6 Professional

Solar System Information

              Planet View Info Report for  9/ 1/2017 to  9/30/2017

                                    Mercury

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

 9/ 1/2017  6:00 18:46   10h03m17s    8°45'21"    9°27'23"   0.056    0.67535
 9/ 8/2017  5:28 18:26   10h02m58s   11°06'23"   16°40'21"   0.273    0.81789
 9/15/2017  5:29 18:25   10h28m02s   10°36'30"   17°33'26"   0.582    1.00955
 9/22/2017  5:52 18:31   11h09m36s    7°18'39"   13°43'47"   0.834    1.18918
 9/29/2017  6:23 18:38   11h56m02s    2°23'51"    8°06'47"   0.959    1.31699

                                     Venus

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

 9/ 1/2017  4:13 17:50    8h37m29s   18°36'25"   31°48'26"   0.837    1.34333
 9/ 8/2017  4:25 17:51    9h11m52s   16°37'32"   30°10'15"   0.855    1.38231
 9/15/2017  4:37 17:51    9h45m41s   14°15'24"   28°30'18"   0.872    1.41919
 9/22/2017  4:50 17:50   10h18m54s   11°33'14"   26°49'01"   0.888    1.45385
 9/29/2017  5:02 17:47   10h51m36s    8°34'43"   25°06'39"   0.903    1.48626

                                      Mars

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

 9/ 1/2017  5:47 18:56    9h59m18s   13°31'51"   11°36'29"   0.996    2.63543
 9/ 8/2017  5:40 18:41   10h16m23s   11°58'30"   13°55'56"   0.995    2.62168
 9/15/2017  5:34 18:27   10h33m15s   10°21'42"   16°17'23"   0.993    2.60470
 9/22/2017  5:27 18:12   10h49m57s    8°42'00"   18°40'52"   0.991    2.58439
 9/29/2017  5:20 17:57   11h06m29s    6°59'59"   21°06'15"   0.988    2.56075

                                    Jupiter

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

 9/ 1/2017 10:00 21:27   13h22m59s   -7°32'58"   43°14'41"   0.996    6.13706
 9/ 8/2017  9:38 21:04   13h27m54s   -8°03'06"   37°46'53"   0.997    6.20649
 9/15/2017  9:17 20:40   13h33m01s   -8°34'02"   32°20'43"   0.998    6.26763
 9/22/2017  8:56 20:16   13h38m20s   -9°05'33"   26°55'34"   0.998    6.31989
 9/29/2017  8:35 19:53   13h43m48s   -9°37'27"   21°31'13"   0.999    6.36272

                                     Saturn

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

 9/ 1/2017 14:34  0:52   17h21m49s  -21°58'39"  102°22'51"   0.998    9.81637
 9/ 8/2017 14:07  0:25   17h22m18s  -22°00'24"   95°42'56"   0.998    9.93100
 9/15/2017 13:40 23:55   17h23m07s  -22°02'25"   89°06'09"   0.998   10.04701
 9/22/2017 13:14 23:28   17h24m16s  -22°04'41"   82°32'14"   0.998   10.16288
 9/29/2017 12:48 23:02   17h25m44s  -22°07'08"   76°01'12"   0.998   10.27701

                                     Uranus

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

 9/ 1/2017 21:37 10:34    1h45m38s   10°16'27"  130°34'15"   1.000   19.24627
 9/ 8/2017 21:09 10:05    1h44m59s   10°12'41"  137°31'27"   1.000   19.16197
 9/15/2017 20:41  9:37    1h44m13s   10°08'16"  144°31'58"   1.000   19.08831
 9/22/2017 20:13  9:08    1h43m21s   10°03'17"  151°35'47"   1.000   19.02653
 9/29/2017 19:45  8:39    1h42m24s    9°57'51"  158°42'24"   1.000   18.97775

                                    Neptune

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

 9/ 1/2017 19:33  7:05   22h58m41s   -7°33'14"  175°41'33"   1.000   28.94064
 9/ 8/2017 19:05  6:36   22h57m58s   -7°37'43"  177°04'28"   1.000   28.94077
 9/15/2017 18:37  6:08   22h57m15s   -7°42'09"  170°11'12"   1.000   28.95539
 9/22/2017 18:09  5:40   22h56m34s   -7°46'26"  163°11'02"   1.000   28.98446
 9/29/2017 17:41  5:11   22h55m54s   -7°50'30"  156°09'11"   1.000   29.02761

                                     Pluto

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

 9/ 1/2017 16:24  2:44   19h13m31s  -21°40'53"  128°16'02"   1.000   32.76348
 9/ 8/2017 15:57  2:16   19h13m11s  -21°42'16"  121°24'24"   1.000   32.86632
 9/15/2017 15:29  1:49   19h12m57s  -21°43'30"  114°32'31"   1.000   32.97662
 9/22/2017 15:01  1:21   19h12m48s  -21°44'34"  107°40'19"   1.000   33.09295
 9/29/2017 14:34  0:53   19h12m45s  -21°45'27"  100°47'59"   1.000   33.21364


                         Planet Apsides Report for 2017

Mercury
   9/15/2017  Perihelion   Distance from Sun:   0.31 AU


       Planet Conjunction/Opposition Report for  9/ 1/2017 to  9/30/2017

Neptune

  Date        Hour   Event

   9/ 5/2017   0     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/ 1/2017 to  9/30/2017

Date          Hour    Apsis      Distance (km)    Diameter

 9/13/2017    11      Perigee    369858           0.5385°
 9/27/2017     2      Apogee     404350           0.4925°


                 Moon Nodes Report for  9/ 1/2017 to  9/30/2017

Date          Time     Node          Illuminated Fraction

 9/ 4/2017    13:40    Descending    0.97
 9/17/2017    13:27    Ascending     0.08


               Meteor Showers Report for  9/ 1/2017 to  9/30/2017

Date        Meteor Shower       ZHR  RA      DEC   Illum. Frac.  Longitude

 9/ 8/2017  Piscids             10    0h36m    7°  0.93          166°
 9/20/2017  Piscids              5    0h24m    0°  0.00          178°


                  Twilight Report for  9/ 1/2017 to  9/30/2017

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

 9/ 1/2017    6:42  19:27    5:15  20:54    5:44  20:24    6:13  19:55
 9/ 8/2017    6:45  19:19    5:20  20:44    5:49  20:15    6:17  19:47
 9/15/2017    6:49  19:10    5:25  20:34    5:53  20:06    6:21  19:38
 9/22/2017    6:53  19:01    5:29  20:25    5:58  19:57    6:25  19:29
 9/29/2017    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 Friday, September 1, 2017, 01:50 PM.