© NASA/Ricardo Nunes

Venus at dichotomy

Dominic Ford, Editor
From the Inner Planets feed

Objects: Venus
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
The sky at

Venus will reach half phase in its 2006 morning apparition. It will be shining brightly at mag -4.4.

From Cambridge , this apparition will not be one of the most prominent but , reaching a peak altitude of 21° above the horizon at sunrise on 21 Feb 2006.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

2006 morning apparition of Venus

13 Jan 2006 – Venus at inferior solar conjunction
14 Feb 2006 – Venus at greatest brightness
21 Feb 2006 – Venus at highest altitude in morning sky
25 Mar 2006 – Venus at greatest elongation west
25 Mar 2006 – Venus at dichotomy
27 Oct 2006 – Venus at superior solar conjunction

A graph of the phase of Venus is available here.

Apparitions of Venus

28 Mar 2004 – Evening apparition
18 Aug 2004 – Morning apparition
03 Nov 2005 – Evening apparition
25 Mar 2006 – Morning apparition
09 Jun 2007 – Evening apparition
28 Oct 2007 – Morning apparition
14 Jan 2009 – Evening apparition

Observing Venus

Venus's orbit lies closer to the Sun than the Earth's, meaning that it always appears close to the Sun and is lost in the Sun's glare much of the time.

It is observable for a few months each time it reaches greatest separation from the Sun – moments referred to as greatest elongation. These apparitions repeat roughly once every 1.6 years.

On these occasions, Venus is so bright and conspicuous that it becomes the third brightest object in the sky after the Sun and Moon. It is often called the morning star or the evening star.

Venus's phase

Venus's phase varies depending on its position relative to the Earth. When it passes between the Earth and Sun, for example, the side that is turned towards the Earth is entirely unilluminated, like a new moon.

Conversely, when it lies opposite to the Earth in its orbit, passing almost behind the Sun, it appears fully illuminated, like a full moon. However, at this time it is also at its most distant from the Earth, so it is actually fainter than at other times.

Venus shows an intermediate half phase – called dichotomy – at roughly the same moment that it appears furthest from the Sun, at greatest elongation. The exact times of the two events may differ by a few days, only because Venus's orbit is not quite perfectly aligned with the ecliptic.

Venus's position

The coordinates of Venus when it reaches dichotomy will be:

Object Right Ascension Declination Constellation Angular Size
Venus 21h22m40s 13°35'S Aquarius 24.3"
Sun 00h19m 2°06'N Pisces 32'04"

The coordinates above are given in J2000.0.

The sky on 24 Nov 2024

The sky on 24 November 2024
Sunrise
06:44
Sunset
16:15
Twilight ends
17:54
Twilight begins
05:04

23-day old moon
Waning Crescent

29%

23 days old

Planets
Rise Culm. Set
Mercury 08:30 12:53 17:15
Venus 10:10 14:33 18:56
Moon 00:12 06:46 13:09
Mars 20:33 04:00 11:27
Jupiter 17:05 00:36 08:07
Saturn 12:54 18:25 23:55
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

25 Mar 2006  –  Venus at greatest elongation west
10 May 2007  –  Venus at highest altitude in evening sky
09 Jun 2007  –  Venus at greatest elongation east
24 Oct 2007  –  Venus at highest altitude in morning sky

Image credit

© NASA/Ricardo Nunes

Share

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EST

Color scheme