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
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The Moon will pass in front of Saturn, creating a lunar occultation visible from 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.

The occultation will be visible from Fairfield. It will begin with the disappearance of Saturn behind the Moon at 13:15 EDT, though in daylight. Its reappearance will be visible at 14:25 EDT, though in daylight.

Extreme caution is necessary when pointing binoculars or telescopes at the sky when the Sun is above the horizon, as even a momentary glance at the Sun through such an instrument can cause permanent blindness.

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)
Sudan 20:21–21:36
Democratic Republic of the Congo 20:24–21:39
Algeria 19:03–21:00
Chad 20:08–21:30
Mali 19:11–21:08
Niger 19:41–21:18
Mauritania 18:48–20:57
Nigeria 19:51–21:28
Angola 20:36–21:36
Central African Republic 20:17–21:35
Libya 20:00–21:01
Morocco 18:51–20:24
Cameroon 20:10–21:35
Ethiopia 20:32–21:31
Tanzania 20:38–21:39
Republic of the Congo 20:22–21:37
Ivory Coast 19:33–21:14
Western Sahara 18:46–20:33
Burkina Faso 19:34–21:14
Gabon 20:20–21:35
Guinea 19:16–21:02
Uganda 20:34–21:39
Zambia 20:49–21:37
Ghana 19:42–21:19
Senegal 19:00–20:51
Kenya 20:34–21:29
Benin 19:49–21:21
Liberia 19:35–21:05
Sierra Leone 19:27–20:57
Togo 19:47–21:20
Eritrea 20:34–21:17
Guinea-Bissau 19:12–20:46
Burundi 20:40–21:39
Equatorial Guinea 20:14–21:33
Rwanda 20:38–21:39
Spain 19:17–19:52
Gambia 19:08–20:44
The Canary Islands 18:36–20:15
Egypt 20:34–20:48
Cape Verde 18:45–20:17
Sao Tome and Principe 20:17–21:29
Melilla 19:29–19:54
Gibraltar 19:21–19:51
The Savage Islands 18:40–20:08
Isla de Alborán 19:33–19:47
Islas Chafarinas 19:33–19:52

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.

At the time of the occultation, the Moon will be 0 days past new moon and will be 43% illuminated. Saturn will disappear behind the unilluminated side of the Moon and reappear from behind the illuminated side of the Moon.

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

Object Right Ascension Declination Constellation Magnitude Angular Size
Saturn 11h30m50s 5°32'N Leo 0.9 0'17"

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
02 Mar 1974 23 May 1980 Occultations of Saturn 17 Jul 1980 29 Dec 1983
18 Jun 1980 18 Jun 1980 Occultations 09 Jul 1980 09 Jul 1980

The sky on 22 Nov 2024

The sky on 22 November 2024
Sunrise
06:47
Sunset
16:28
Twilight ends
18:05
Twilight begins
05:10

21-day old moon
Waning Crescent

48%

21 days old

Planets
Rise Culm. Set
Mercury 08:40 13:06 17:32
Venus 10:13 14:39 19:06
Moon 22:16 05:32 12:36
Mars 20:52 04:15 11:38
Jupiter 17:26 00:53 08:20
Saturn 13:09 18:41 00:13
All times shown in EST.

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

22 May 1980  –  Saturn ends retrograde motion
23 Jul 1980  –  Saturn ring plane crossing
18 Jan 1981  –  Saturn enters retrograde motion
26 Mar 1981  –  Saturn at opposition

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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