Venus at greatest brightness

Dominic Ford, Editor
From the Inner Planets feed


Objects: Venus

Venus will reach its greatest brightness in its 2035–2036 evening apparition. It will be shining brightly at mag -4.5.

From Cambridge , this apparition will be exceptionally well placed and prominent, reaching a peak altitude of 43° above the horizon at sunset on 22 Mar 2036.

2035–2036 evening apparition of Venus

19 Mar 2036 – Venus at greatest elongation east
22 Mar 2036 – Venus at dichotomy
22 Mar 2036 – Venus at highest altitude in evening sky
23 Apr 2036 – Venus at greatest brightness
29 May 2036 – Venus at inferior solar conjunction

A graph of the brightness of Venus is available here.

Apparitions of Venus

29 May 2033 – Morning apparition
12 Aug 2034 – Evening apparition
01 Jan 2035 – Morning apparition
19 Mar 2036 – Evening apparition
08 Aug 2036 – Morning apparition
24 Oct 2037 – Evening apparition
15 Mar 2038 – Morning 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 brightness

Venus's brightness depends on two factors: its closeness to the Earth, and its phase. Its 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 reaches its brightest when it is still a crescent – with less than half of its disk illuminated. This is because it is much closer to the Earth during its crescent phases than at other times.

As a result, during evening apparitions, Venus reaches maximum brightness a few days after it is at greatest separation from the Sun, which always coincides with it showing half-phase (dichotomy).

Conversely, during morning apparitions, Venus reaches maximum brightness a few days before it is at greatest separation from the Sun.

Venus's position

The coordinates of Venus when it reaches its greatest brightness will be:

Object Right Ascension Declination Constellation Angular Size
Venus 04h44m00s 27°20'N Taurus 37.4"
Sun 02h06m 12°46'N Aries 31'48"

The coordinates above are given in J2000.0.

The sky on 6 Jul 2024

The sky on 6 July 2024
Sunrise
05:11
Sunset
20:23
Twilight ends
22:34
Twilight begins
03:00


Waxing Crescent

2%

1 day old

Planets
Rise Culm. Set
Mercury 06:59 14:20 21:41
Venus 05:53 13:25 20:58
Moon 05:22 13:30 21:30
Mars 01:47 08:54 16:01
Jupiter 02:48 10:14 17:40
Saturn 23:27 05:07 10:48
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.

Related news

22 Mar 2036  –  Venus at highest altitude in evening sky
08 Aug 2036  –  Venus at greatest elongation west
31 Aug 2036  –  Venus at highest altitude in morning sky
24 Oct 2037  –  Venus at greatest elongation east

Image credit

© NASA/Ricardo Nunes

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