Monthly Observing Information
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.
Kisatchie Clear Sky Clock
Click on image for more info and details. This clock is for the Kisatchie area only.
September
Moon Calendar
Sky charts
Saturn’s Ring Plane
Venus Phase
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
Last updated on Friday, September 1, 2017, 01:50 PM.