MinorPlanet.info

SkyWatch: December 2018

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, 2018 Dec 19 08:42 UT)

RA    17 46 59.0
Dec   -23 24 11.2
X     -0.049275
Y     -0.901565
Z     -0.390831
R      0.983868

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
2018 Dec 18    05:37 06:10 06:43 07:13 16:39 17:09 17:42 18:15
2018 Dec 19    05:38 06:10 06:44 07:14 16:39 17:09 17:43 18:15
2018 Dec 20    05:38 06:11 06:44 07:14 16:40 17:10 17:43 18:16

Moon Information

Currently (Wed, 2018 Dec 19 08:42 UT)

RA          02 47 44.0
Dec         +10 53 41.6
Phase       0.858  (+ = waxing; - = waning)
Parallax    0.964 degrees
Diameter    31.51 arcminutes
Elong (RA)  135E

Local time for moon rise/transit/set (for UT date)
UT Date Rise Transit Set
2018 Dec 18 13:33 19:57 02:35
2018 Dec 19 14:04 20:45 03:40
2018 Dec 20 14:38 21:36 04:48

Phases for 2018
       New                    First                  Full                   Last
---------------------------------------------------------------------------------------
Dec 18 2017  06:31     Dec 26 2017  09:21     Jan 02 2018  02:25     Jan 08 2018  22:26     
Jan 17 2018  02:18     Jan 24 2018  22:21     Jan 31 2018  13:27     Feb 07 2018  15:55     
Feb 15 2018  21:06     Feb 23 2018  08:10     Mar 02 2018  00:52     Mar 09 2018  11:21     
Mar 17 2018  13:13     Mar 24 2018  15:36     Mar 31 2018  12:38     Apr 08 2018  07:18     
Apr 16 2018  01:58     Apr 22 2018  21:46     Apr 30 2018  00:59     May 08 2018  02:09     
May 15 2018  11:49     May 22 2018  03:50     May 29 2018  14:21     Jun 06 2018  18:32     
Jun 13 2018  19:44     Jun 20 2018  10:51     Jun 28 2018  04:54     Jul 06 2018  07:52     
Jul 13 2018  02:49     Jul 19 2018  19:53     Jul 27 2018  20:21     Aug 04 2018  18:19     
Aug 11 2018  09:58     Aug 18 2018  07:49     Aug 26 2018  11:57     Sep 03 2018  02:38     
Sep 09 2018  18:02     Sep 16 2018  23:16     Sep 25 2018  02:53     Oct 02 2018  09:46     
Oct 09 2018  03:48     Oct 16 2018  18:03     Oct 24 2018  16:46     Oct 31 2018  16:41     
Nov 07 2018  16:03     Nov 15 2018  14:55     Nov 23 2018  05:40     Nov 30 2018  00:20     
Dec 07 2018  07:21     Dec 15 2018  11:50     Dec 22 2018  17:49     Dec 29 2018  09:35     
Jan 06 2019  01:29     Jan 14 2019  06:46     Jan 21 2019  05:17     Jan 27 2019  21:11     
Feb 04 2019  21:04     Feb 12 2019  22:27     Feb 19 2019  15:54     Feb 26 2019  11:28     
Planet Information
Currently  (Wed, 2018 Dec 19  08:42 UT) 
Local Rise/Transit/Set times are given at the end of each line
Sun         17 46 59.0   -23 24 11.2       
Opposition  05 46 59.0   +23 24 11.2   180E   16:36   23:54   07:13
Mercury     16 18 42.2   -19 34 29.4    21W   05:37   10:27   15:15
Venus       14 40 11.8   -12 21 24.0    46W   03:31   08:47   14:02
Mars        23 28 28.9   -04 04 06.2    84E   11:43   17:32   23:28
Jupiter     16 28 41.0   -21 08 06.0    18W   05:51   10:35   15:17
Saturn      18 41 44.1   -22 35 24.2    13E   07:59   12:40   17:14
Uranus      01 46 39.1   +10 25 47.7   121E   13:24   19:54   02:25
Neptune     23 01 04.7   -07 20 47.4    77E   11:22   16:58   22:26
Pluto       19 26 16.2   -22 02 33.9    23E   08:40   13:24   17:59 
Selected Positions for December 2018                Dec 01 2018                       Dec 16 2018                       Dec 31 2018
-------------------------------------------------------------------------------------------------------------
Sun         16 26 55.8  -21 42 51.8           17 32 35.1  -23 17 14.1           19 48 59.3  -21 04 36.6      
Opposition  04 26 55.8  +21 42 51.8  180E     05 32 35.1  +23 17 14.1  180E     07 48 59.3  +21 04 36.6  180E
Mercury     15 53 55.4  -18 17 12.9    8W     16 03 45.2  -18 31 34.1   21W     19 12 03.3  -23 52 24.3    9W
Venus       13 49 13.4  -09 47 32.1   40W     14 29 32.7  -11 42 18.5   45W     16 30 05.8  -18 31 55.4   47W
Mars        22 44 57.6  -09 10 48.1   91E     23 20 40.5  -04 59 44.2   85E     00 36 00.0  +03 53 45.0   75E
Jupiter     16 11 39.4  -20 26 26.5    4W     16 25 40.5  -21 01 15.9   16W     16 53 17.8  -21 55 29.7   41W
Saturn      18 32 49.8  -22 41 46.6   29E     18 40 06.5  -22 36 44.2   16E     18 55 48.9  -22 20 53.9   12W
Uranus      01 48 13.3  +10 34 01.5  140E     01 46 51.7  +10 26 52.4  125E     01 46 12.5  +10 24 18.0   93E
Neptune     23 00 30.0  -07 24 51.7   95E     23 00 55.4  -07 21 49.9   80E     23 03 13.5  -07 06 51.1   49E
Pluto       19 23 56.7  -22 05 36.2   41E     19 25 49.8  -22 03 09.6   26E     19 30 13.4  -21 56 47.0    4W

Local Date	AT Start	NT Start	CT Start	Sun Rise	Sun Set	CT End	NT End	AT End
2018 Dec 18	05:37	06:10	06:43	07:13	16:39	17:09	17:42	18:15
2018 Dec 19	05:38	06:10	06:44	07:14	16:39	17:09	17:43	18:15
2018 Dec 20	05:38	06:11	06:44	07:14	16:40	17:10	17:43	18:16

UT Date	Rise	Transit	Set
2018 Dec 18	13:33	19:57	02:35
2018 Dec 19	14:04	20:45	03:40
2018 Dec 20	14:38	21:36	04:48