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Almanac - Daily ephemerids
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Date: 17-12-2018
Day in year: 351
Julian Day: 2458469.417 (at local midnight)
Local Sidereal Time at local midnight: 06:01:58

Sun   Sun   (at noon)
R.A. 17:40.0        Dec. -23:21       
Distance 0.984 au
Apparent solar long. 265.41°
Equation of Time: 3.9 min
Morning Evening
Rise/Set 06:34 16:38
Civil Twillight 06:07 17:05
Nautical Twillight 05:36 17:36
Astronomical Twillight 05:07 18:06
Moon
Illuminated fraction: 0.64 at local midnight
R.A. 0.80 hours     Dec. 0°     Dist 394 x103km.
Rise: 13:04       Set: 00:46

Albedo Topographic
Moon Phase

The planets

Equinox: J2000.0 date        Geocentric positions for 00 TDT time
Planet R.A. Dec. Delta Elong Mag Phase Diameter Const Rise Set Transit Additional
J2000.0date [au] [au] [deg] [mag] [frac] [arcsec] [HH:MM] [HH:MM] [HH:MM] Information
Mercury 16:08:05.316:09:08.9-18:50:25-18:53:121.0470.379-21.2-0.40.676Sco04:5315:2010:07
Venus 14:32:45.914:33:45.6-11:53:59-11:58:460.5220.719-45.2-4.60.3832Lib02:5914:0308:31
Mars 23:23:03.623:24:01.1-04:42:44-04:36:351.1371.43684.90.20.878Aqr11:2923:1217:20
Jupiter 16:26:35.516:27:40.3-21:03:22-21:05:426.2915.354-16.4-1.71.0031Oph05:1715:3010:24 Central meridian
Satellites curves
Satellites midnight
Saturn 18:40:35.918:41:42.0-22:36:20-22:35:1011.01010.06114.61.31.0015Sgr07:3517:3912:37 Saturn rings
Satellites midnight
Uranus 01:46:47.401:47:47.6+10:26:30+10:32:0519.30019.864123.85.71.004Psc13:1402:1419:42
Neptune 23:00:57.923:01:55.8-07:21:33-07:15:3230.11429.93978.97.91.002Aqr11:1322:4016:57

Sky maps

for 20:00 local time
for 22:00 local time
for 00:00 local time
for 02:00 local time
for 04:00 local time


Active Meteor showers: 3
Monocerotids
Geminids
Ursids




Help & how to use this page

Important comment: The data in this page (unless otherwise noted) is calculated for midnight of date. If for example, you are interested in data for the night of 2008 August 17/18, insert the date "18 08 2008". Note however, that in this example, the Moon/Sun rise/set will be calculated for the day of 2008 August 18!
Accuracy: The sky maps are plotted for the nearest whole local sidereal hour.
The rise/set times are accurate to about two minutes and are given relative to the local horizon. Note, that the actual rise/set times depends on the atmospheric conditions.