SkyWatch: September 2021

Dates and times are Universal Time
Positions are geocentric J2000
Pluto's position is astrometric, i.e., it accounts for the approx. 6 hour light-time
Elongations are in degrees
Calculations by Brian D. Warner

Location Information for Rise/Set times
Enter Longitude and Latitude in degrees (e.g., 39.1003).
Western/Southern Hemisphere = negative
Enter UTOffset in hours (e.g., 9.5)

Examples: Colo Spgs, CO: –105 +39 -7.0;    Adelaide, Australia =  +138 –34 +9.5)

Longitude   Latitude   UTOffset  

Sun Information

Currently (Wed, 2021 Sep 22 13:42 UT)
RA 11 57 49.2
Dec +00 14 10.6
X -1.003573
Y 0.008422
Z 0.003653
R 1.003615

Local time for sunrise/sunset/twilight
Civil Twilight (CT): Sun 6º below horizon
Nautical Twilight (NT): Sun 12º below horizon
Astronomical Twilight (AT): Sun 18º below horizon

Local
Date
AT
Start
NT
Start
CT
Start
Sun
Rise
Sun
Set
CT
End
NT
End
AT
End
2021 Sep 21   04:1704:4905:2005:4717:5518:2218:5319:25
2021 Sep 22   04:1804:5005:2105:4817:5418:2018:5119:23
2021 Sep 23   04:1904:5105:2205:4817:5218:1918:5019:21

 


Moon Information


Currently (Wed, 2021 Sep 22 13:42 UT)
RA          01 12 19.6
Dec +03 45 38.6
Phase -0.973  (+ = waxing; - = waning)
Parallax 0.924 degrees
Diameter 30.22 arcminutes
Elong (RA) 161W

Local time for moon rise/transit/set (for UT date)

UT DateRiseTransitSet
2021 Sep 2118:4100:5407:58
2021 Sep 2218:4100:5407:27
2021 Sep 2319:0501:3708:29

Phases for 2021

New First Full Last
---------------------------------------------------------------------------------------

Dec 14 2020 16:17 Dec 21 2020 23:42 Dec 30 2020 03:29 Jan 06 2021 09:38
Jan 13 2021 05:01 Jan 20 2021 21:02 Jan 28 2021 19:17 Feb 04 2021 17:38
Feb 11 2021 19:06 Feb 19 2021 18:48 Feb 27 2021 08:18 Mar 06 2021 01:31
Mar 13 2021 10:21 Mar 21 2021 14:41 Mar 28 2021 18:48 Apr 04 2021 10:03
Apr 12 2021 02:31 Apr 20 2021 07:00 Apr 27 2021 03:32 May 03 2021 19:51
May 11 2021 19:00 May 19 2021 19:13 May 26 2021 11:14 Jun 02 2021 07:25
Jun 10 2021 10:52 Jun 18 2021 03:55 Jun 24 2021 18:39 Jul 01 2021 21:11
Jul 10 2021 01:17 Jul 17 2021 10:12 Jul 24 2021 02:37 Jul 31 2021 13:17
Aug 08 2021 13:50 Aug 15 2021 15:20 Aug 22 2021 12:02 Aug 30 2021 07:14
Sep 07 2021 00:52 Sep 13 2021 20:40 Sep 20 2021 23:55 Sep 29 2021 01:58
Oct 06 2021 11:06 Oct 13 2021 03:26 Oct 20 2021 14:57 Oct 28 2021 20:06
Nov 04 2021 21:15 Nov 11 2021 12:47 Nov 19 2021 08:58 Nov 27 2021 12:28
Dec 04 2021 07:44 Dec 11 2021 01:36 Dec 19 2021 04:36 Dec 27 2021 02:24
Jan 02 2022 18:34 Jan 09 2022 18:12 Jan 17 2022 23:49 Jan 25 2022 13:42
Feb 01 2022 05:47 Feb 08 2022 13:51 Feb 16 2022 16:58 Feb 23 2022 22:33

Planet Information


Currently (Wed, 2021 Sep 22 13:42 UT)
Local Rise/Transit/Set times are given at the end of each line
Sun         11 57 49.2   +00 14 10.6       
Opposition 23 57 49.2 -00 14 10.6 180E 17:48 23:49 06:06
Mercury 13 23 42.7 -12 36 29.4 25E 08:01 13:15 18:28
Venus 14 40 10.8 -17 16 57.4 44E 09:34 14:33 19:28
Mars 12 17 58.0 -01 06 37.0 5E 06:17 12:10 18:01
Jupiter 21 43 24.3 -14 56 19.1 144E 16:14 21:24 02:25
Saturn 20 37 54.4 -19 20 47.1 127E 15:26 20:19 01:05
Uranus 02 46 51.8 +15 38 52.1 135W 19:51 02:39 09:28
Neptune 23 29 44.1 -04 32 30.1 172E 17:26 23:11 04:48
Pluto 19 45 02.4 -22 54 58.2 115E 14:47 19:27 23:59

 

Selected Positions for September 2021
                Sep 01 2021                       Sep 16 2021                       Sep 30 2021
-------------------------------------------------------------------------------------------------------------
Sun 10 40 29.2 +08 23 07.0 11 34 30.8 +02 45 15.9 13 23 25.8 -08 46 26.6
Opposition 22 40 29.2 -08 23 07.0 180E 23 34 30.8 -02 45 15.9 180E 01 23 25.8 +08 46 26.6 180E
Mercury 12 06 56.2 -01 33 52.3 24E 13 07 59.8 -10 18 26.8 27E 12 38 49.3 -03 57 02.0 12W
Venus 13 07 10.0 -07 19 31.2 40E 14 11 37.8 -14 29 33.9 43E 16 26 48.6 -24 50 39.7 46E
Mars 11 27 15.9 +04 31 12.6 12E 12 02 34.6 +00 36 15.8 7E 13 14 41.1 -07 15 46.3 3W
Jupiter 21 52 15.9 -14 11 13.1 167E 21 45 41.2 -14 45 05.7 151E 21 39 09.2 -15 15 05.4 119E
Saturn 20 41 51.7 -19 05 26.7 149E 20 38 50.1 -19 17 14.4 134E 20 36 49.3 -19 24 50.1 104E
Uranus 02 48 24.5 +15 46 00.5 114W 02 47 28.3 +15 41 39.3 129W 02 43 50.7 +15 25 07.1 159W
Neptune 23 31 53.9 -04 18 21.9 167W 23 30 23.5 -04 28 15.0 178E 23 27 32.5 -04 46 24.9 148E
Pluto 19 46 03.7 -22 51 19.4 136E 19 45 15.7 -22 54 06.6 121E 19 44 56.5 -22 56 12.3 91E