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

Lunar occultation of Venus

Dominic Ford, Editor
From the Lunar Occultations feed

Objects: Venus

The Moon will pass in front of Venus, creating a lunar occultation visible from countries and territories including Argentina, Chile, southern Brazil and Uruguay 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 Venus 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 Venus 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 Venus.

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)
Argentina 21:15–22:57
Chile 21:05–22:43
Brazil 22:00–22:58
Uruguay 21:53–22:58
Antarctica 21:41–22:24
Falkland Islands 21:31–22:43
French Polynesia 18:42–20:05
South Georgia and the South Sandwich Islands 21:49–22:43
Cook Islands 18:43–19:50
Pitcairn 19:07–20:27

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 Venus at the moment of the occultation will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
Venus 13h39m20s 10°59'S Virgo -4.1 0'15"

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
13 Aug 2012 13 Aug 2012 Occultations of Venus 26 Feb 2014 07 Dec 2015
25 May 2013 15 Aug 2013 Occultations 11 Sep 2013 11 Sep 2014

The sky on 21 Nov 2024

The sky on 21 November 2024
Sunrise
06:45
Sunset
16:28
Twilight ends
18:05
Twilight begins
05:09

20-day old moon
Waning Gibbous

54%

20 days old

Planets
Rise Culm. Set
Mercury 08:42 13:07 17:33
Venus 10:12 14:38 19:04
Moon 21:08 04:45 12:10
Mars 20:55 04:18 11:41
Jupiter 17:31 00:58 08:25
Saturn 13:13 18:45 00:17
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 Sep 2012  –  Venus at highest altitude in morning sky
31 Oct 2013  –  Venus at greatest elongation east
08 Dec 2013  –  Venus at highest altitude in evening sky
18 Feb 2014  –  Venus at highest altitude in morning sky

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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