Lunar occultation of Antares

Dominic Ford, Editor
From the Lunar Occultations feed


Objects: Antares

The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from countries and territories including Brazil, Peru, Colombia and 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.

Unfortunately the occultation will not be visible from Fairfield.

The map below shows the visibility of the occultation across the world. Separate contours show where the disappearance of Antares (Alpha Scorpii) 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 Antares (Alpha Scorpii) 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)
Brazil 06:03–07:28
Peru 05:44–07:21
Colombia 05:52–07:25
Venezuela 06:08–07:28
Ecuador 05:17–07:18
Bolivia 06:18–07:11
Guyana 06:21–07:29
Suriname 06:24–07:29
Nicaragua 05:58–06:47
Panama 05:53–07:10
French Guiana 06:27–07:29
Costa Rica 05:52–06:56
Dominican Republic 06:27–07:02
Haiti 06:31–06:53
Puerto Rico 06:27–07:10
Trinidad and Tobago 06:21–07:27
Guadeloupe 06:25–07:20
Saint Vincent and the Grenadines 06:22–07:25
Barbados 06:24–07:25
British Virgin Islands 06:27–07:11
Martinique 06:24–07:23
Curacao 06:16–07:17
Saint Kitts and Nevis 06:26–07:17
Saint Lucia 06:23–07:24
U.S. Virgin Islands 06:26–07:13
Antigua and Barbuda 06:26–07:18
Dominica 06:24–07:21
Anguilla 06:27–07:14
Bonaire, Saint Eustatius and Saba 06:17–07:18
Grenada 06:22–07:25
Montserrat 06:25–07:18
Aruba 06:16–07:14
Sint Maarten 06:27–07:14
Saint Barthelemy 06:27–07:14
Saint Martin 06:27–07:14
Clipperton Island 04:32–05:25

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 Antares (Alpha Scorpii) at the moment of the occultation will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Antares (Alpha Scorpii) 16h29m20s 26°25'S Scorpius 1.1 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 1953 Occultations of Antares (Alpha Scorpii) 22 Jul 1953 25 Jan 1968
10 Mar 1953 13 Jun 1953 Occultations 22 Jul 1953 28 Oct 1953

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

39%

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.

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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