The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Lunar occultation of Saturn

Dominic Ford, Editor
From the Lunar Occultations feed

Objects: Saturn

The Moon will pass in front of Saturn, creating a lunar occultation visible from Russia, Europe, Asia and Africa. Although the occultation will only be visible across part of the world – because the Moon is so close to the Earth that its position in the sky varies by as much as two degrees across the world – a close conjunction between the pair will be more widely visible.

Unfortunately the occultation will not be visible from Jacksonville.

The map below shows the visibility of the occultation across the world. Separate contours show where the disappearance of Saturn is visible (shown in red), and where its reappearance is visible (shown in blue). Solid contours show where each event is likely to be visible through binoculars at a reasonable altitude in the sky. Dotted contours indicate where each event occurs above the horizon, but may not be visible due to the sky being too bright or the Moon being very close to the horizon.

Map showing where the occultation is visible

Outside the contours, the Moon will not pass in front of Saturn at any time, or is below the horizon at the time of the occultation. However, a close conjunction between the pair will be visible across much of the world.

The map can be downloaded in PNG , PDF or SVG format. A KMZ file , is also available, which can be opened in Google Earth to provide a higher resolution map.

The animation below shows the path of the occultation across the Earth's globe. The red circle shows where the Moon appears in front of Saturn.

You can download this video in MP4 or OGG format.

A complete list of the countries and territories where the occultation will be visible is as follows:

Country Time span
(UTC)
Russia 21:16–00:08
Kazakhstan 21:42–23:39
China 22:53–00:08
Algeria 20:25–21:43
Mongolia 22:53–00:05
Libya 20:34–21:36
Mali 20:23–21:17
Mauritania 20:23–21:21
Sweden 21:15–22:40
Ukraine 21:07–22:38
Turkey 21:01–22:16
Norway 21:19–22:47
France 20:48–22:04
Finland 21:27–22:45
Spain 20:38–21:50
Germany 20:58–22:18
Poland 21:06–22:27
Morocco 20:28–21:35
Greenland 21:54–22:29
Italy 20:44–22:05
Great Britain 21:01–22:09
Svalbard 21:56–22:48
Belarus 21:14–22:37
Romania 21:02–22:21
Western Sahara 20:24–21:22
Iceland 21:36–22:10
Greece 20:53–22:06
Tunisia 20:36–21:45
North Korea 23:21–00:08
Niger 20:33–21:04
Bulgaria 20:59–22:13
Hungary 21:00–22:16
Serbia 20:57–22:10
Ireland 21:06–22:02
South Korea 23:32–00:07
Latvia 21:20–22:35
Czechia 21:02–22:15
Portugal 20:39–21:44
Lithuania 21:18–22:32
Austria 20:58–22:12
Georgia 21:29–22:23
Estonia 21:24–22:38
Denmark 21:13–22:20
Croatia 20:54–22:08
Slovakia 21:03–22:18
Bosnia and Herzegovina 20:56–22:07
Netherlands 21:04–22:10
Switzerland 20:55–22:03
Belgium 21:02–22:06
Uzbekistan 22:10–22:46
Moldova 21:10–22:23
Macedonia 20:56–22:04
Albania 20:54–22:02
Slovenia 20:57–22:08
Northern Ireland 21:11–22:03
Egypt 21:02–21:28
Montenegro 20:55–22:04
Armenia 21:45–22:13
The Canary Islands 20:29–21:25
Corsica 20:48–21:56
Azerbaijan 21:49–22:16
Cyprus 21:21–21:41
Faroe Islands 21:27–22:11
Mallorca 20:43–21:46
Luxembourg 21:01–22:05
Shetland 21:23–22:14
The Portuguese Azores 20:47–21:37
Aland Islands 21:27–22:32
Orkney 21:20–22:11
Svalbard and Jan Mayen 21:49–22:40
Menorca 20:44–21:47
Isle of Man 21:11–22:03
Ibiza 20:42–21:44
Andorra 20:48–21:49
Malta 20:44–21:44
Jersey 21:00–21:57
Guernsey 21:01–21:58
Melilla 20:36–21:35
RAF Akrotiri 21:27–21:34
Gibraltar 20:38–21:36
Vatican 20:51–21:56
Liechtenstein 20:58–22:03
Monaco 20:51–21:55
San Marino 20:54–22:00
Syria 21:36–21:42
Madeira 20:36–21:30
The Savage Islands 20:32–21:26
Isla de Alborán 20:37–21:37
Islas Chafarinas 20:36–21:36

Lunar occultations are only ever visible from a small fraction of the Earth's surface. Since the Moon is much closer to the Earth than other celestial objects, its exact position in the sky differs depending on your exact location on Earth due to its large parallax. The position of the Moon as seen from two points on opposite sides of the Earth varies by up to two degrees, or four times the diameter of the full moon.

This means that if the Moon is aligned to pass in front of a particular object for an observer on one side of the Earth, it will appear up to two degrees away from that object on the other side of the Earth.

The position of Saturn at the moment of the occultation will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Saturn 04h50m10s 20°34'N Taurus -0.4 0'20"

The coordinates above are given in J2000.0.

Next/previous occultations

« Previous Next »
Visible from the Contiguous United States Worldwide Worldwide Visible from the Contiguous United States
10 Sep 2001 07 Oct 2001 Occultations of Saturn 01 Dec 2001 01 Dec 2001
10 Sep 2001 23 Oct 2001 Occultations 01 Dec 2001 01 Dec 2001

The sky on 17 Jul 2024

The sky on 17 July 2024
Sunrise
06:33
Sunset
20:28
Twilight ends
22:02
Twilight begins
04:59

12-day old moon
Waxing Gibbous

84%

12 days old

Planets
Rise Culm. Set
Mercury 08:41 15:18 21:55
Venus 07:29 14:21 21:12
Moon 17:20 22:24 03:26
Mars 02:35 09:24 16:13
Jupiter 03:26 10:22 17:18
Saturn 23:18 05:06 10:53
All times shown in EDT.

Source

The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Related news

26 Sep 2001  –  Saturn enters retrograde motion
03 Dec 2001  –  Saturn at opposition
07 Feb 2002  –  Saturn ends retrograde motion
11 Oct 2002  –  Saturn enters retrograde motion

Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

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