Astrological Meanderings: longitude
Showing posts with label longitude. Show all posts
Showing posts with label longitude. Show all posts

Tuesday, 13 July 2021

Periodicity of Mars-Venus Conjunctions

I wrote explicitly about Mars-Venus conjunctions in a post titled Mars-Venus on January 27th 2017. However, I've also referred to the topic in Synodic Periods on March 30th 2017 and Mars: A Close Approach and Retrograde Motion of Planets on August 4th 2018. Today (July 13th 2021), when Mars is once again conjunct Venus, I thought it was time to revisit the topic. In this conjunction, the latitudes of these two planets are very close, 1°39' versus 1°11' north latitude. Their longitudes become identical 19°48'57" at 8:33pm, Jakarta time. See Figure 1.


Figure 1

Adapted from Stellarium, Figure 2 shows the view from Jakarta looking to the West about 6:30pm on July 13th 2021. The star Regulus is quite near to the Moon, being at a latitude of 0°08' of Virgo.


Figure 2

This would be the first of three conjunctions of Venus and Mars. The next two conjunctions of Mars and Venus are slated to take place on February 12, 2022 and March 12, 2022. These three form what is called a triple conjunction defined as:
A triple conjunction is an astronomical event where two planets or a planet and a star meet each other three times in a short period, either in opposition or at the time of inferior conjunction, if an inferior planet is involved. The visible movement of the planet or the planets in the sky is therefore normally prograde at the first conjunction, retrograde at the second conjunction and again prograde at the third conjunction. Source.

Figure 3 shows another view of what the first conjunction might look like:


Figure 3

Venus-Mars repeated conjunctions occur every 32 years (plus 0.5 to 4.5 days). During that time, 15 to 17 different conjunctions occur with nearly each one repeating in turn. Some series last >1200 years (up to 40 events). Others are considerably shorter. At the beginning and end of these series, the interval can be one week longer than 32 years. The reason why this happens is because for nearly every 20 times Venus returns to its similar position in the sky, Mars completes almost 15 returns. If these cycles were exactly whole numbers, the repeated conjunctions would last much longer.

This can be confirmed by looking ahead to 2053 and seeing how Mars and Venus are positioned. We find that Mars and Venus are again conjunct in 23°26' of Leo at 7.42pm on July 14th 2053. This is less than 4° from the July 13th 2021 position in 19°49' of Leo. See Figure 4. Remarkable!


Figure 4: Mars-Venus conjunction 2053

Going back to 1989, we find the the two planets were conjunct in 16°17' of Leo at 12:21am on July 13th 1989. This  is about 3.5° behind the 2021 position. See Figure 5.


Figure 5: Mars-Venus conjunction 1989

Saturday, 4 August 2018

Mars: A Close Approach and Retrograde Motion of Planets

Figure 1
In 2018, Mars will appear brightest from July 27 to July 30. Its closest approach to Earth is July 31. That is the point in Mars' orbit when it comes closest to Earth. Mars will be at a distance of 57.6 million kilometres ... In 2003, Mars made its closest approach to Earth in nearly 60,000 years! It won't be that close again until the year 2287. Source.
Of course, Astrology doesn't take these close encounters of Mars or any other planet into account at all. The astrological chart is only concerned with a planet's celestial longitude or the angular distance of a planet east of the vernal equinox, measured along the ecliptic. Thus on July 31st at 4:33pm in Brisbane, Mars was in 3°02' of Aquarius or 303°02' east of the vernal equinox. It's celestial latitude was 6°33' South but this is not considered in chart analysis as far as I know.

Should the proximity of Mars to Earth be considered in chart analysis? Will Mars be more influential in the charts of persons who were born on July 31st 2018 compared with charts where Mars is at a maximum distance from Earth? Is a transit of Mars more powerful when it is closer to Earth than when it is farther away? I really don't know. However, what is known is that Mars is opposition to the Sun during such encounters and there is always period of time in which Mars appears to move backward through the zodiac because Earth is "overtaking" Mars because of the latter's slower orbital velocity. Mars is retrograde in Aquarius and Capricorn from June 26th to August 27th, 2018. Figure 2 shows this.

Figure 2 
In general, Mars is retrograde approximately 58-81 days every 2+ years. Cafe Astrology. com makes the following observation about a retrograde Mars in the natal chart:
If Mars is retrograde in the natal chart, this is what the Karmic Insight report has to say about this position: “Asserting yourself vigorously and directly is complicated by the fact that you had a prior lifetime or lifetimes in which aggression was either misused (by you, or against you) and/or all personal initiative and self-will was insistently discouraged (perhaps due to a belief system that advocated passivity). 
In any case, the message that was impressed upon you was that forceful action is wrong or dangerous. Thus, if you stand up for yourself, you now tend to hesitate, back down or even be plagued with fears of retaliation.”
Most natal charts will thus not have Mars retrograde. In 90% or more of natal charts, Mars will be in direct motion. This got me thinking about the periods of retrograde motion of other planets. Cafe Astrology. com has a lot to say about Mercury retrograde, a phenomenon that occurs approximately three times a year for approximately three weeks each time. Here is a quick quote:
When Mercury is retrograde in the natal chart itself, the thinking processes are generally more acute, and the sense of humour rather quirky. People with Mercury retrograde take in information differently than those with Mercury direct in their natal charts. How many people are born with a retrograde Mercury? Roughly 18%. 
Venus appears to retrograde approximately 40-43 days out of every 18 months or around 7-8% of its orbit.  How does a retrograde Venus affect a natal chart? Again Cafe Astrology. com has a lot to say about this. Here is an excerpt:
When Venus is retrograde in the natal chart itself, the feeling nature is deep. Socialising is taken seriously, and rarely lightly. They can be somewhat shy in youth, as there can be an awkwardness felt concerning small talk and social graces, and an aversion for superficialities. Love is extremely important to a person with a retrograde Venus, but they may not be explicit about it enough for others to know just how deeply they can love. There is always more to this person than meets the eye. Their love life (and sometimes financial life) can be hidden in some manner.
Cafe Astrology.com has a page about retrograde motion in general in which the point is made that as we move further out with the planets, retrogrades occur more frequently, and it is more common for people to have these planets retrograde in their charts. There follows descriptions for Jupiter, Saturn, Uranus, Neptune and Pluto in retrograde motion, although no percentages for the amount of time spent retrograde. However, I discovered the following summary on Quora:

Planet --> Synodic period, days --> Synodic period, mean months --> Days in retrograde -->  %

Mercury --> 116 --> 3.8 -->   ~21 -->   18
Venus --> 584 --> 19.2 -->    41  -->     7
Mars --> 780 --> 25.6 -->     72 -->      9
Jupiter --> 399 --> 13.1 -->  121  -->    30
Saturn --> 378 --> 12.4 -->   138  -->    37
Uranus --> 370 --> 12.15 -->   151 -->    41
Neptune --> 367 --> 12.07 -->   158  -->    43

Pluto of course would be even closer to 50%. The table clearly shows that persons with Mercury, Venus and Mars retrograde are in a distinct minority and that it should be a factor to consider when interpreting natal charts.