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

Lunar occultation of Delta Scorpii

Dominic Ford, Editor
From the Lunar Occultations feed

Objects: Dschubba

The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from Sub-Saharan Africa and South America. 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 Cambridge.

The map below shows the visibility of the occultation across the world. Separate contours show where the disappearance of Delta Scorpii (Dschubba) 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 Delta Scorpii (Dschubba) 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.

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

Country Time span
(UTC)
South Africa 00:10–02:02
Brazil 21:55–23:13
Angola 23:47–01:50
Namibia 23:48–01:53
Mozambique 00:40–02:12
Zambia 00:21–02:02
Tanzania 00:56–02:08
Madagascar 01:00–02:16
Botswana 00:13–02:00
Democratic Republic of the Congo 00:28–01:56
Zimbabwe 00:28–02:05
Malawi 00:49–02:07
French Guiana 21:53–22:42
Liberia 22:37–23:17
Sierra Leone 22:29–23:09
Kenya 01:20–01:52
Suriname 21:53–22:40
Swaziland 00:40–01:59
Guinea 22:32–22:57
Guinea-Bissau 22:25–22:54
Cape Verde 22:02–22:50
Mauritius 01:14–02:12
Reunion 01:13–02:12
Seychelles 01:11–02:16
Comoros 01:05–02:13
Ivory Coast 22:54–23:15
Senegal 22:31–22:44
Mayotte 01:06–02:14
Saint Helena 22:24–00:34
Lesotho 00:35–01:50

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 Delta Scorpii (Dschubba) at the moment of the occultation will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Delta Scorpii (Dschubba) 16h00m20s 22°37'S Scorpius 2.3 0'00"

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
28 May 2086 28 Apr 2097 Occultations of Delta Scorpii (Dschubba) 22 Jun 2097
01 Mar 2096 28 Apr 2097 Occultations 22 Jun 2097 25 Dec 2097

The sky on 3 Jul 2024

The sky on 3 July 2024
Sunrise
05:09
Sunset
20:24
Twilight ends
22:37
Twilight begins
02:56

27-day old moon
Waning Crescent

2%

27 days old

Planets
Rise Culm. Set
Mercury 06:44 14:12 21:39
Venus 05:47 13:21 20:56
Moon 02:34 10:37 18:50
Mars 01:52 08:57 16:02
Jupiter 02:57 10:23 17:48
Saturn 23:39 05:19 11:00
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.

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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Cambridge

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42.38°N
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