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 countries and territories including Mexico, the eastern Contiguous United States, Colombia and western Venezuela 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 Jacksonville. It will begin with the disappearance of Delta Scorpii (Dschubba) behind the Moon at 22:28 EDT in the south-western sky at an altitude of 13.0 degrees. Its reappearance will be visible at 23:23 EDT, though at a low altitude of 3.0 degrees.

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.

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)
Mexico 01:39–03:34
The Contiguous United States 02:12–03:32
Colombia 02:35–03:39
Venezuela 02:48–03:38
Cuba 02:27–03:39
Nicaragua 02:27–03:39
Honduras 02:23–03:38
Guatemala 02:18–03:35
Panama 02:37–03:38
Costa Rica 02:31–03:38
Haiti 02:38–03:40
Bahamas 02:31–03:37
Dominican Republic 02:39–03:35
Belize 02:22–03:35
El Salvador 02:22–03:36
Jamaica 02:35–03:40
Ecuador 02:33–03:26
Cayman Islands 02:31–03:37
Turks and Caicos Islands 02:38–03:28
Aruba 02:48–03:38
Clipperton Island 01:40–03:09
Navassa Island 02:37–03:40

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 6 days past new moon and will be 43% illuminated. Delta Scorpii (Dschubba) will disappear behind the unilluminated side of the Moon and reappear from behind the illuminated side of the Moon.

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
12 Mar 2004 07 Aug 2011 Occultations of Delta Scorpii (Dschubba) 01 Oct 2011 19 Apr 2022
07 Jun 2009 07 Aug 2011 Occultations 01 Oct 2011 13 Aug 2012

The sky on 7 May 2024

The sky on 7 May 2024
Sunrise
06:35
Sunset
20:08
Twilight ends
21:37
Twilight begins
05:06


Waning Crescent

0%

29 days old

Planets
Rise Culm. Set
Mercury 05:30 11:45 18:00
Venus 06:17 12:53 19:28
Moon 06:01 12:54 19:57
Mars 04:38 10:43 16:48
Jupiter 07:07 13:55 20:42
Saturn 03:50 09:37 15:24
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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