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Almanac - Daily ephemerids
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Date: 04-08-2021
Day in year: 216
Julian Day: 2459430.417 (at local midnight)
Local Sidereal Time at local midnight: 21:10:48

Sun   Sun   (at noon)
R.A. 08:58.9        Dec. +17:07       
Distance 1.015 au
Apparent solar long. 132.26°
Equation of Time: -6.1 min
Morning Evening
Rise/Set 04:57 18:36
Civil Twillight 04:30 19:02
Nautical Twillight 03:58 19:34
Astronomical Twillight 03:25 20:08
Moon
Illuminated fraction: -0.20 at local midnight
R.A. 5.15 hours     Dec. 24°     Dist 403 x103km.
Rise: 00:57       Set: 15:35

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 09:08:55.309:10:05.8+18:14:40+18:09:351.3490.3413.2-1.80.995Cnc05:0918:5012:00
Venus 11:07:31.211:08:36.4+06:56:40+06:49:511.2980.72333.7-4.00.8113Leo07:3820:1613:57
Mars 10:21:07.610:22:14.3+11:25:36+11:19:162.5661.66421.41.80.994Leo06:3919:4113:10
Jupiter 22:06:01.322:07:11.2-12:54:27-12:48:064.0525.029-162.6-2.81.0049Aqr19:2206:2500:51 Central meridian
Satellites curves
Satellites midnight
Saturn 20:49:39.320:50:53.2-18:33:31-18:28:398.9369.950178.00.91.0019Cap18:2204:5323:35 Saturn rings
Satellites midnight
Uranus 02:48:13.202:49:24.0+15:45:34+15:50:5219.76819.743-87.25.81.004Ari22:5112:2005:37
Neptune 23:34:17.823:35:24.5-04:02:07-03:54:5729.14929.923-139.07.81.002Aqr20:2808:1602:24

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: 7
Piscis Austrinids
South delta Aquarids
alpha Capricornids
South iota Aquarids
North delta 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.