We offer you the astronomy calendar for October 2020. Astronomy is the foundation upon which astrology can operate. Actually, astrology and astronomy were treated together, under the Latin name of astrologia, being separated only by the Western 17th century philosophy. One thing is sure: a good astrologer needs to study astronomy.
1st October: Full Moon
The full moon is the lunar phase when the Moon appears fully illuminated from Earth’s perspective. This occurs when Earth is located directly between the Sun and the Moon (more exactly, when the ecliptic longitudes of the Sun and Moon differ by 180°). This means that the lunar hemisphere facing Earth – the near side – is completely sunlit and appears as a circular disk, while the far side is dark.
October full moon was known by early Native American tribes as the Full Hunters Moon. The leaves are falling from trees, the deer are fattened, and it’s time to begin storing up meat for the long winter ahead. Other names for the October full moon were Leaf-Falling Moon, Nuts Moon, Blood Moon, Sanguine Moon, Travel Moon and Dying Grass Moon.
1st October: Mercury at Greatest Eastern Elongation
In astronomy, a planet’s elongation is the angular separation between the Sun and the planet, with Earth as the reference point. The greatest elongation of a given inferior planet (Mercury or Venus) occurs when this planet’s position, in its orbital path around the Sun, is at tangent to the observer on Earth. The planet Mercury reaches greatest eastern elongation of 25,8 degrees from the Sun. This is the best time to view Mercury since it will be at its highest point above the horizon in the evening sky.
7th: October: Draconids Meteor Shower
The October Draconids produces only about 10 meteors per hour, being a minor meteor shower. In the past was also unofficially known as the Giacobinids. It is produced by dust grains left behind by comet 21P Giacobini-Zinner, which was first discovered in 1900. The Draconids is an unusual shower in that the best viewing is in the early evening instead of early morning like most other showers. They seemingly come from the constellation Draco, after which they were named. So, meteors will radiate from the constellation Draco, but can appear anywhere in the sky.
13th October: Mars at Opposition
Mars will be at its closest approach to Earth and its face will be fully illuminated by the Sun. It will be brighter than any other time of the year and will be visible all night long. This is the best time to view and photograph the red planet.
16th October: New Moon
The New Moon is when the Sun and Moon are aligned, with the Sun and Earth on opposite sides of the Moon. The new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude. At this phase, the lunar disk is not visible to the unaided eye, except when silhouetted during a solar eclipse. This is the best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere.
21th October-22nd October: Orionids Meteor Shower
The Orionid meteor shower, usually shortened to the Orionids, is the most prolific meteor shower associated with Halley’s Comet. The point they appear to come from, called the radiant, lies in the constellation Orion. But they can be seen over a large area of the sky. The Orionids produces up to 20 meteors per hour at its peak, being an average shower. It peaks this year on the night of October 21st and the morning of October 22nd. Best viewing will be from a dark location after midnight.
20th October-30th October: Southern Taurids Meteor Shower
The Taurids are an annual meteor shower. It produces only about 5-10 meteors per hour. It actually has two separate streams, with a Southern and a Northern component. The Southern Taurids comes from debris left behind by Comet 2P Encke. The Northern Taurids come from dust grains left behind by Asteroid 2004 TG10. Their name comes from their radiant point in the constellation Taurus, where they are seen to come from in the sky. Because of their occurrence in late October and early November, they are also called Halloween fireballs. It peaks this year on the night of October 29th. Meteors will radiate from the constellation Taurus, but can appear anywhere in the sky.
31st October: Full Moon and Blue Moon
Since this is the second full moon in the same calendar month, it is referred to as a blue moon. This rare calendar event only occurs every few months, giving rise to the term “once in a blue moon”.
When a Full Moon falls at the very beginning of a month (Like this years’ 1st October Full Moon), a Blue Moon will occur at the end of the month (this 31st October Full Moon).
31st October: Uranus at Opposition
Uranus will be at its closest approach to Earth. So, its face will be fully illuminated by the Sun. It will be brighter than any other time of the year and will be visible all night long. This is the best time to view Uranus. Due to its distance, it will only appear as a tiny blue-green dot in all but the most powerful telescopes.