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Almanac - Daily ephemerids
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Date: 17-08-2017
Day in year: 229
Julian Day: 2457982.417 (at local midnight)
Local Sidereal Time at local midnight: 22:01:56

Sun   Sun   (at noon)
R.A. 09:48.0        Dec. +13:17       
Distance 1.012 au
Apparent solar long. 144.70°
Equation of Time: -4.1 min
Morning Evening
Rise/Set 05:05 18:23
Civil Twillight 04:39 18:49
Nautical Twillight 04:09 19:20
Astronomical Twillight 03:37 19:51
Moon
Illuminated fraction: -0.29 at local midnight
R.A. 5.23 hours     Dec. 18°     Dist 367 x103km.
Rise: 00:26       Set: 14:34

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 10:41:54.710:42:47.5+03:25:14+03:19:490.6470.43817.22.10.1410Sex06:2818:4712:38
Venus 07:21:17.107:22:18.0+21:23:39+21:21:321.2530.722-35.2-4.00.7913Gem02:2016:2009:20
Mars 09:20:51.409:21:48.1+16:42:27+16:37:592.6541.653-6.71.81.004Cnc04:3318:0411:18
Jupiter 13:12:25.013:13:18.8-06:26:44-06:32:095.9645.44955.1-1.80.9933Vir09:2320:5415:09 Central meridian
Satellites curves
Satellites midnight
Saturn 17:21:09.117:22:12.6-21:55:46-21:56:389.56210.061116.91.01.0017Oph14:1300:2019:17 Saturn rings
Satellites midnight
Uranus 01:45:38.901:46:35.0+10:16:59+10:22:1219.45519.917-115.85.81.004Psc21:1210:1103:44
Neptune 22:59:12.723:00:08.3-07:29:44-07:23:5728.98929.947-160.97.81.002Aqr19:1006:4100:54

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: 5
South delta Aquarids
North delta Aquarids
Perseids
kappa Cygnids
North iota Aquarids


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.