Lunar Occultation

by Dominic Ford, Editor
Last updated: 16 Jul 2020
Lunar Occultation

The Moon occults Saturn in 2008 May. Image © Thomas Bresson.

A lunar occultation occurs when the Moon passes in front of a star or other astronomical object. Occultations of bright stars and planets typically occur a few times per year, often clustering with several occultations of the same object in successive months, since the Moon traces roughly the same path across the sky each month. These clusters come to an end after a few months, when gradual changes in the Moon's orbit change the Moon's path across the sky. Alternatively, in the case of planets, the planet's own movement will eventually carry it away from the Moon's path.

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 no single lunar occultation can ever be visible across the whole Earth: 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.

In-The-Sky.org lists all lunar occultations of the planets and stars brighter than second magnitude, and provides maps of where each occultation is visible. Each map shows separate contours for where the disappearance of the occulted object behind the Moon is visible (shown in red), and where its reappearance is visible (shown in blue). The 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.

The KMZ files below can be opened in Google Earth to provide a more high-resolution view.

List of lunar occultations

The table below lists lunar occultations of the planets and stars brighter than second magnitude in 2024. To show events in other years, use the control below.

Change year

Lunar occultations in 2024

Date Visibility from
Ashburn
Disappear Reappear Object Visibility
map
Full description
of event
Date Visibility from
Ashburn
Disappear Reappear Object Visibility
map
Full description
of event
08 Jan 2024 In daylight09:31 EST10:49 ESTAntaresPNG | PDF | SVG | KMZMore »
15 Jan 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
22 Jan 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
05 Feb 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
12 Feb 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
18 Feb 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
03 Mar 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
16 Mar 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
30 Mar 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
06 Apr 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
07 Apr 2024 In daylight12:34 EDT13:47 EDTVenusPNG | PDF | SVG | KMZMore »
13 Apr 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
26 Apr 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
03 May 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
04 May 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
05 May 2024 Not visibleMarsPNG | PDF | SVG | KMZMore »
10 May 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
24 May 2024 Low altitude21:36 EDT22:09 EDTAntaresPNG | PDF | SVG | KMZMore »
31 May 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
01 Jun 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
16 Jun 2024 Not visibleSpicaPNG | PDF | SVG | KMZMore »
20 Jun 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
27 Jun 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
28 Jun 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
14 Jul 2024 Disappearance:
Visible

 Reappearance:
Low altitude
23:24 EDT00:34 EDTSpicaPNG | PDF | SVG | KMZMore »
17 Jul 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
24 Jul 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
25 Jul 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
31 Jul 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
10 Aug 2024 Not visibleSpicaPNG | PDF | SVG | KMZMore »
14 Aug 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
21 Aug 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
21 Aug 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
27 Aug 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
05 Sep 2024 Not visibleVenusPNG | PDF | SVG | KMZMore »
06 Sep 2024 In daylight11:33 EDT12:32 EDTSpicaPNG | PDF | SVG | KMZMore »
10 Sep 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
17 Sep 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
18 Sep 2024 Visible04:12 EDT04:22 EDTNeptunePNG | PDF | SVG | KMZMore »
24 Sep 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
07 Oct 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
14 Oct 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
15 Oct 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
21 Oct 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
04 Nov 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »
11 Nov 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
12 Nov 2024 Visible21:08 EST22:21 ESTNeptunePNG | PDF | SVG | KMZMore »
17 Nov 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
27 Nov 2024 Disappearance:
Visible

 Reappearance:
In twilight
05:34 EST06:49 ESTSpicaPNG | PDF | SVG | KMZMore »
08 Dec 2024 Not visibleSaturnPNG | PDF | SVG | KMZMore »
09 Dec 2024 Not visibleNeptunePNG | PDF | SVG | KMZMore »
15 Dec 2024 Not visibleElnathPNG | PDF | SVG | KMZMore »
18 Dec 2024 Not visibleMarsPNG | PDF | SVG | KMZMore »
24 Dec 2024 Not visibleSpicaPNG | PDF | SVG | KMZMore »
28 Dec 2024 Not visibleAntaresPNG | PDF | SVG | KMZMore »

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