MinorPlanet.info

SkyWatch: January 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)

Sun Information

Currently (Wed, 2021 Jan 20 13:32 UT)

RA    20 10 14.7
Dec   -20 04 13.6
X      0.498400
Y     -0.778467
Z     -0.337467
R      0.984022

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 Jan 19    05:40 06:12 06:44 07:13 17:07 17:36 18:08 18:40
2021 Jan 20    05:39 06:11 06:44 07:12 17:08 17:37 18:09 18:41
2021 Jan 21    05:39 06:11 06:43 07:12 17:09 17:38 18:10 18:42

Moon Information

Currently (Wed, 2021 Jan 20 13:32 UT)

RA          01 47 25.7
Dec         +06 43 38.5
Phase       0.474  (+ = waxing; - = waning)
Parallax    0.905 degrees
Diameter    29.60 arcminutes
Elong (RA)  84E

Local time for moon rise/transit/set (for UT date)
UT Date Rise Transit Set
2021 Jan 19 11:05 17:24 00:18
2021 Jan 20 11:05 17:24 23:55
2021 Jan 21 11:29 18:04 00:53

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 Jan 20  13:32 UT) 
Local Rise/Transit/Set times are given at the end of each line
Sun         20 10 14.7   -20 04 13.6       
Opposition  08 10 14.7   +20 04 13.6   180E   17:02   00:08   07:14
Mercury     21 24 04.7   -16 08 09.3    18E   08:19   13:23   18:29
Venus       19 03 21.5   -22 48 28.1    16W   06:25   11:02   15:40
Mars        02 14 12.3   +14 42 51.7    96E   11:28   18:13   00:59
Jupiter     20 38 19.8   -19 00 14.4     7E   07:35   12:30   17:21
Saturn      20 24 09.0   -19 44 18.2     3E   07:22   12:14   17:01
Uranus      02 17 05.3   +13 15 05.1    96E   11:37   18:17   00:57
Neptune     23 19 55.1   -05 28 50.9    48E   09:26   15:09   20:44
Pluto       19 46 48.0   -22 24 46.8     6W   06:55   11:36   16:11 
Selected Positions for January 2021                Jan 01 2021                       Jan 16 2021                       Jan 31 2021
-------------------------------------------------------------------------------------------------------------
Sun         18 45 39.8  -23 01 17.6           19 51 04.0  -20 59 10.0           21 57 47.2  -12 25 39.2      
Opposition  06 45 39.8  +23 01 17.6  180E     07 51 04.0  +20 59 10.0  180E     09 57 47.2  +12 25 39.2  180E
Mercury     19 16 47.1  -24 23 09.3    7E     20 58 44.7  -18 42 45.3   16E     20 55 19.8  -14 03 45.1   15W
Venus       17 17 16.3  -22 24 48.4   20W     18 38 52.3  -23 06 54.8   17W     21 22 15.8  -16 32 50.0   10W
Mars        01 39 12.7  +11 14 27.9  107E     02 05 32.9  +13 54 28.1   98E     03 10 38.6  +19 12 22.0   83E
Jupiter     20 19 34.7  -20 04 34.7   22E     20 33 58.2  -19 15 52.8   10E     21 03 48.6  -17 20 56.6   14W
Saturn      20 14 40.2  -20 14 12.9   21E     20 21 56.1  -19 51 27.6    7E     20 37 00.5  -19 00 50.5   21W
Uranus      02 17 20.1  +13 15 43.0  116E     02 17 01.9  +13 14 38.8  101E     02 18 47.7  +13 24 33.3   70E
Neptune     23 18 15.1  -05 39 54.5   68E     23 19 28.6  -05 31 45.1   53E     23 23 03.1  -05 08 31.9   22E
Pluto       19 44 01.7  -22 29 58.1   13E     19 46 09.4  -22 25 58.6    2W     19 50 23.4  -22 18 16.1   32W

Local Date	AT Start	NT Start	CT Start	Sun Rise	Sun Set	CT End	NT End	AT End
2021 Jan 19	05:40	06:12	06:44	07:13	17:07	17:36	18:08	18:40
2021 Jan 20	05:39	06:11	06:44	07:12	17:08	17:37	18:09	18:41
2021 Jan 21	05:39	06:11	06:43	07:12	17:09	17:38	18:10	18:42

UT Date	Rise	Transit	Set
2021 Jan 19	11:05	17:24	00:18
2021 Jan 20	11:05	17:24	23:55
2021 Jan 21	11:29	18:04	00:53