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 countries and territories including the Contiguous United States, Mexico, Canada and Honduras amongst others. 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 04:01 EST in the western sky at an altitude of 12.4 degrees. Its reappearance will be visible at 04:34 EST, though at a low altitude of 6.5 degrees.

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.

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.

[Unable to display this video because your browser does not support HTML5]
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)
The Contiguous United States 08:07–09:59
Mexico 08:22–09:58
Canada 08:14–09:37
Honduras 09:16–09:54
Guatemala 09:14–09:54
Cuba 09:05–09:59
Nicaragua 09:19–09:53
Solomon Islands 05:44–06:32
Belize 09:12–09:55
Bahamas 09:02–09:59
Hawaii 06:37–08:01
Papua New Guinea 05:44–06:38
El Salvador 09:27–09:44
Kiribati 05:49–06:46
Federated States of Micronesia 05:49–06:52
Marshall Islands 05:49–07:00
Cayman Islands 09:10–09:59
Northern Mariana Islands 06:09–06:39
Midway Atoll 06:25–07:52
Nauru 05:46–06:41
Baker Island 06:07–06:38
Howland Island 06:05–06:41
Johnston Atoll 06:15–07:31
Midway Islands 06:29–07:30
Wake Island 06:08–07:00

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 95% 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 04h32m30s 20°05'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
01 Dec 2001 01 Dec 2001 Occultations of Saturn 24 Jan 2002 21 Feb 2002
01 Dec 2001 01 Dec 2001 Occultations 24 Jan 2002 21 Feb 2002

The sky on 23 Nov 2024

The sky on 23 November 2024
Sunrise
06:48
Sunset
16:27
Twilight ends
18:04
Twilight begins
05:11


Waning Crescent

40%

22 days old

Planets
Rise Culm. Set
Mercury 08:37 13:04 17:30
Venus 10:14 14:41 19:08
Moon 23:20 06:15 12:58
Mars 20:49 04:12 11:35
Jupiter 17:22 00:49 08:16
Saturn 13:05 18:37 00:09
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

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