As the Great Conjunction of Jupiter and Saturn nears, Jupiter passes Saturn if viewed from the sun.
by Jeffrey L. Hunt
As Jupiter edges closer to Saturn in the evening sky of Earth, Jupiter passes Saturn as viewed from outside the solar system on November 2, 2020. This is known as a heliocentric conjunction. The next one for these two planets is on December 7, 2040.
If we were on Jupiter on November 2, we would say that Saturn is at opposition. Saturn is in the opposite direction in the sky from the sun. If we were Saturnians, then we would say that Jupiter is at inferior conjunction, between Saturn and the sun. Notice on the chart above that Earth is not close to the line of the heliocentric conjunction.
From these two planets in alignment, a question may develop about more planets appearing in a line from the sun. Astronomer Jean Meeus (Mathematical Astronomy Morsels, pp. 186-191) addresses the question. Without reciting his reasons, the answer: “Never!” The dynamics of fast – moving Mercury to slow-moving Pluto (Yes, Pluto is one of the “Classic Nine” planets.), there is never a moment when all nine are in a line stretching from the sun. He further notes that it’s impossible for even three to be in a line. Reasonably they can be within a 60° angle of each other, 50° if Pluto is not included.
In our sky, the planets are 5.0° apart. They can be found in the south-southwest about an hour after sunset on November 2. Saturn is to the upper left of bright Jupiter. The planets are in front of the stars of eastern Sagittarius. The famous “Teapot” shape is to the lower right of the planets.
The Great Conjunction occurs December 21, 2020.
Continue to watch Jupiter and Saturn, as the Jovian Giant moves in and passes the Ringed Wonder as viewed from our observing spot on Earth.
LATEST ARTICLES
- 2026, August 2-5: Waning Moon Passes Saturn Before Sunrise
August 2-5, 2026: Watch the waning moon approach and pass Saturn during morning twilight. Follow the moon’s eastward motion from Pisces’ starfield toward Aries before the Last Quarter phase. - 2026, August 2-5: Mars Passes Between Taurus’ Horns During August Morning Twilight
August 2-5, 2026: Watch Mars march eastward in front of Taurus as it passes between Elnath and Zeta Tauri. Follow the Red Planet’s changing position during morning twilight. - 2026, August 1: Lammas Day Almanac: Buck Moon, Mercury, Venus, Mars, Saturn, Uranus, and Neptune
August 1, 2026: Lammas Day marks summer’s traditional midpoint. Follow the Buck Moon, Mercury near greatest elongation, brilliant Venus, Mars between Taurus’ horns, Saturn, Uranus, and Neptune. - 2026, July 31: Mercury Nears Greatest Elongation: How to Find the Elusive Planet Before Sunrise
July 31, 2026: Mercury reaches greatest elongation in two mornings. Learn how to locate the Elusive Planet low in the east-northeast sky before sunrise using a binocular and terrestrial reference points. - 2026, July 30: Planet Highlights – Buck Moon, Saturn, Mars, and Venus
July 30, 2026: The Buck Moon remains bright while Saturn shines before sunrise, Mars approaches Taurus’ horns, and brilliant Venus dominates the western evening sky.