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 Astronomy Lab 2 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.
January
Moon Calendar
Sky charts
Saturn’s Ring Plane
Venus Phase
Sun and Moon Rise and Set
Begin End Date Moonrise Moonset Sunrise Sunset Twilight Twilight ------------ --------- --------- --------- --------- --------- --------- 2/1/2019 04:34 15:07 06:56 17:41 05:34 19:04 2/2/2019 05:24 15:57 06:55 17:42 05:33 19:04 2/3/2019 06:10 16:49 06:55 17:43 05:33 19:05 2/4/2019 06:52 17:42 06:54 17:44 05:32 19:06 2/5/2019 07:30 18:35 06:53 17:45 05:32 19:07 2/6/2019 08:05 19:29 06:52 17:46 05:31 19:07 2/7/2019 08:38 20:21 06:52 17:47 05:30 19:08 2/8/2019 09:10 21:15 06:51 17:47 05:30 19:09 2/9/2019 09:41 22:08 06:50 17:48 05:29 19:09 2/10/2019 10:13 23:03 06:49 17:49 05:28 19:10 2/11/2019 10:46 24:00 06:49 17:50 05:28 19:11 2/12/2019 11:23 ------ 06:48 17:51 05:27 19:12 2/13/2019 12:04 00:59 06:47 17:51 05:26 19:12 2/14/2019 12:51 02:00 06:46 17:52 05:26 19:13 2/15/2019 13:45 03:03 06:45 17:53 05:25 19:14 2/16/2019 14:46 04:05 06:44 17:54 05:24 19:15 2/17/2019 15:53 05:05 06:43 17:55 05:23 19:15 2/18/2019 17:03 06:00 06:42 17:55 05:22 19:16 2/19/2019 18:13 06:50 06:41 17:56 05:21 19:17 2/20/2019 19:23 07:36 06:40 17:57 05:20 19:17 2/21/2019 20:30 08:17 06:39 17:58 05:20 19:18 2/22/2019 21:36 08:56 06:38 17:58 05:19 19:19 2/23/2019 22:39 09:34 06:37 17:59 05:18 19:19 2/24/2019 23:40 10:12 06:36 18:00 05:17 19:20 2/25/2019 ------ 10:51 06:35 18:01 05:16 19:21 2/26/2019 00:39 11:33 06:34 18:01 05:15 19:22 2/27/2019 01:37 12:17 06:33 18:02 05:14 19:22 2/28/2019 02:30 13:04 06:32 18:03 05:13 19:23 '------' means the event does not occur on this date. Object Right ascensio Declination Azimuth Altitude Earth distance Sun distance ------------ -------------- ------------- ------------- ------------- --------------- --------------- Sun 21h 53m 58.3s -12° 45' 54" 345° 07' 41" -71° 47' 07" 0 0 Mercury 22h 42m 31.5s -09° 14' 48" 319° 55' 28" -63° 36' 15" 183,271,814 50,309,174 Venus 18h 55m 55.9s -21° 04' 31" 84° 53' 38" -53° 09' 41" 145,552,630 108,098,692 Mars 01h 52m 59.6s +12° 07' 12" 294° 05' 32" -14° 52' 48" 246,767,726 226,022,484 Jupiter 17h 16m 55.5s -22° 26' 37" 98° 42' 20" -32° 24' 33" 846,403,459 798,313,665 Saturn 19h 11m 08.7s -21° 59' 09" 83° 58' 34" -56° 46' 34" 1,615,234,483 1,504,699,417 Uranus 01h 49m 33.0s +10° 44' 00" 293° 27' 11" -16° 22' 56" 3,034,691,880 2,970,546,289 Neptune 23h 07m 48.8s -06° 37' 53" 312° 53' 31" -57° 44' 52" 4,617,918,140 4,478,646,047 Pluto 19h 35m 27.8s -21° 47' 57" 79° 16' 04" -61° 53' 16" 5,169,231,871 5,047,699,658 Moon 05h 36m 36.8s +20° 19' 16" 274° 10' 27" +35° 47' 27" 371,170 0 Object Rise: Tran Set: Phase Constl Magnitud ------------ ----- ----- ----- ------- --------- -------- Sun 06:45 12:19 17:53 0.00% Cap unknown Mercury 07:27 13:09 18:52 88.76% Aqr -1.2 Venus 04:11 09:21 14:32 67.54% Sgr -4.2 Mars 09:45 16:17 22:49 90.41% Ari 1.0 Jupiter 02:35 07:41 12:46 99.28% Oph -2.0 Saturn 04:27 09:34 14:42 99.90% Sgr 0.6 Uranus 09:45 16:12 22:39 99.95% Ari 5.8 Neptune 07:44 13:30 19:17 100.00% Aqr 8.0 Pluto 04:50 09:58 15:05 99.99% Sgr 14.3 Moon 13:44 20:52 03:02 74.30% Tau unknown Moon Data --------- Distance (km): 371,169.8 Distance (miles): 230,634.8 True Equatorial: 05h 39m 45.1s +20° 38' 12" Angular diameter: 0° 32' 31" Total libration (l,b): 6° 50' 24" , 3° 31' 23" Optical libration: 6° 49' 02" , 3° 29' 12" Physical libration: 0° 01' 22" , 0° 02' 11" Position Angle: 0° 42' 03" Pos. angle (bright limb): 60° 54' 56" Phase angle: 0° 42' 03" Age: 10.37 Mars Data --------- Declination of earth: 21° 23' 39" Declination of Sun: 7° 49' 27" Longitude of the central Meridian: 14° 31' 48" Pos. Angle: 322° 25' 49" Jupiter Data ----------------- Declination of earth: 2° 47' 44" Declination of Sun: 2° 52' 47" Longitude of the central Meridian:348° 51' 48" Pos. Angle: 3° 48' 01" Saturn Data --------- Declination of earth: 24° 26' 08" Declination of Sun: 25° 11' 25" Longitude of the central Meridian: 0° 00' 00" Pos. Angle: 6° 26' 37" Name Month/Day RA Decl Hourly Rate ----------------------------- ------------ ---------- ---------- ----------- Alpha Centaurids 02/08 14.0 -59.0 10 Delta Leonids 02/26 10.6 19.0 24
Information and images in this section from TheSkyX Student Edition
Solar System Information
Planet View Info Report for 2/ 1/2019 to 2/28/2019
Mercury
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 7:11 17:47 21h05m01s -18°51'03" 2°28'29" 0.997 1.39729
2/ 8/2019 7:21 18:19 21h53m51s -14°40'39" 6°53'40" 0.975 1.33700
2/15/2019 7:27 18:52 22h40m56s -9°26'34" 12°14'29" 0.892 1.22987
2/22/2019 7:26 19:17 23h22m16s -3°44'52" 16°48'10" 0.697 1.06920
Venus
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 3:56 14:19 17h45m44s -20°48'56" 45°12'46" 0.621 0.86886
2/ 8/2019 4:04 14:25 18h19m57s -21°10'28" 44°18'32" 0.649 0.92042
2/15/2019 4:11 14:32 18h54m41s -21°05'09" 43°17'00" 0.675 0.97120
2/22/2019 4:16 14:41 19h29m39s -20°31'44" 42°09'10" 0.699 1.02117
Mars
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 10:14 23:00 1h16m47s 8°25'32" 69°04'37" 0.894 1.52662
2/ 8/2019 9:59 22:54 1h34m29s 10°16'37" 66°42'59" 0.899 1.58714
2/15/2019 9:45 22:49 1h52m22s 12°03'35" 64°22'11" 0.904 1.64745
2/22/2019 9:32 22:44 2h10m27s 13°45'42" 62°02'02" 0.909 1.70738
Jupiter
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 3:20 13:33 17h07m05s -22°15'20" 54°02'57" 0.994 5.85922
2/ 8/2019 2:57 13:10 17h12m07s -22°21'25" 59°58'55" 0.994 5.76326
2/15/2019 2:35 12:47 17h16m46s -22°26'27" 65°59'08" 0.993 5.66157
2/22/2019 2:12 12:23 17h21m01s -22°30'34" 72°03'55" 0.992 5.55524
Saturn
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 5:16 15:30 19h04m27s -22°09'00" 26°55'35" 1.000 10.94590
2/ 8/2019 4:52 15:06 19h07m41s -22°04'15" 33°16'29" 0.999 10.88706
2/15/2019 4:27 14:42 19h10m45s -21°59'29" 39°38'21" 0.999 10.81741
2/22/2019 4:02 14:17 19h13m40s -21°54'47" 46°01'20" 0.999 10.73784
Uranus
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 10:39 23:32 1h48m05s 10°35'18" 77°03'04" 0.999 20.05788
2/ 8/2019 10:12 23:06 1h48m44s 10°39'08" 70°07'14" 0.999 20.17324
2/15/2019 9:45 22:39 1h49m31s 10°43'45" 63°14'49" 1.000 20.28367
2/22/2019 9:18 22:13 1h50m26s 10°49'05" 56°25'49" 1.000 20.38767
Neptune
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 8:38 20:09 23h06m00s -6°49'18" 33°07'44" 1.000 30.75876
2/ 8/2019 8:11 19:43 23h06m53s -6°43'44" 26°16'08" 1.000 30.81968
2/15/2019 7:45 19:17 23h07m48s -6°37'56" 19°26'30" 1.000 30.86774
2/22/2019 7:18 18:50 23h08m46s -6°31'57" 12°39'07" 1.000 30.90239
Pluto
Date Rise Set RA Dec Elongation Ill Fr DIST(AU)
2/ 1/2019 5:44 16:00 19h33m35s -21°50'47" 20°11'19" 1.000 34.65551
2/ 8/2019 5:18 15:33 19h34m32s -21°49'19" 27°04'11" 1.000 34.61235
2/15/2019 4:51 15:06 19h35m26s -21°47'57" 33°56'34" 1.000 34.55639
2/22/2019 4:24 14:40 19h36m17s -21°46'42" 40°48'23" 1.000 34.48859
Planet Apsides Report for 2019
Mercury
2/25/2019 Perihelion Distance from Sun: 0.31 AU
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 2/ 1/2019 to 2/28/2019
Date Hour Apsis Distance (km) Diameter
2/ 5/2019 3 Apogee 406558 0.4899°
2/19/2019 3 Perigee 356771 0.5582°
Moon Nodes Report for 2/ 1/2019 to 2/28/2019
Date Time Node Illuminated Fraction
2/ 3/2019 0:34 Descending 0.03
2/17/2019 3:41 Ascending 0.91
Twilight Report for 2/ 1/2019 to 2/28/2019
Date Sun Astronomical Nautical Civil
Rise Set Begin End Begin End Begin End
2/ 1/2019 6:56 17:41 5:30 19:07 5:58 18:39 6:27 18:10
2/ 8/2019 6:51 17:47 5:26 19:12 5:54 18:44 6:22 18:16
2/15/2019 6:45 17:53 5:21 19:17 5:49 18:50 6:17 18:21
2/22/2019 6:39 17:58 5:15 19:22 5:42 18:54 6:10 18:26
Information for this section is from Astronomy Lab 2.03
Last updated on Friday, February 1, 2019, 01:16 PM.