Astronomy lovers certainly will not miss the celestial phenomenon. A number of celestial phenomena in September await. Don't be late.
Based on the September astronomical calendar released , here are some interesting astronomical phenomena that are worth waiting for.
1. Peak Aurigid Meteor Shower
At the beginning of the month, on September 1, 2021, there will be the peak of the Aurigid meteor shower. Aurigid is a meteor shower whose radii point is in the direction of the constellation Auriga, which is adjacent to the constellation Taurus.
Actually the meteor shower has been active since August 28, and will end on September 5. The maximum meteor intensity will occur on September 1, 2021 at 10.00 WIB/11. WITA / 12 noon WIT. So that it can be seen from 01.30 to 05.30 local time, from the Northeast to the North-Northeast.
2. Pollux Moon Conjunction
Pollux is the main star in the constellation Gemini. This star is in conjunction with the Moon, the peak will occur on September 3, 2021 at 11.04 WIB / 12.04 WITA / 13.04 WIT, and can be seen with the naked eye.
However, this celestial phenomenon can be seen from 03.00 to 05.30 local time from the northeast at an angle of 4.3 to 3.7 degrees. The moon is in the final crescent phase with an illuminance of 18.1 to 17.5 percent, while Pollux has a magnitude of +1.15.
3. Venus-Spica conjunction
Spica is the main star in the constellation Virgo. This star will be in conjunction with Venus and its peak will occur on September 6, 2021 at 03:53 WIB/04:53 WITA/05:53 WIT, with a separation angle of 1.6 degrees.
This phenomenon can be seen on September 5, 2021 from 18.30 to 20.30 local time, and we can watch it from various directions, without visual aids. The brightness of Venus will be -4.05 while Spica will have a magnitude of +0.95.
4. Shadowless Day
The world will experience its second shadowless day this year. The first has occurred since late February to early April, while the second will take place from 6 September to 21 October. To see a complete schedule of days without shadows per region, please refer to the following link.
5. New Moon Phase
The celestial phenomenon of the new Moon phase or lunar solar conjunction is a configuration when the Moon is located between the Sun and Earth which is in line with the Sun and Earth.
Given the Moon's orbit which forms an angle of 5.1 degrees to the ecliptic, the Moon's shadow does not always fall on the Earth's surface during a new Moon phase, so each new Moon phase does not always coincide with a solar eclipse.
This New Moon phase occurs on September 7 at 07.51 WIB/08.51 WITA/09.51 WIT, with a distance of 377,022 kilometers from Earth, and is located in the constellation Leo. Unfortunately, this phenomenon can only be witnessed using visual aids.
6. Aphelion Mercury
Aphelion is generally the configuration when the planet is at its furthest point from the Sun. This is due to the planet's elliptical orbit with the Sun and is located at one of the two focal points of the orbit.
Mercury's aphelion occurs every 88 days on average or at least four times a year. This phenomenon will occur on September 6, 2021, at 07.28 WIB / 08.28 WITA / 09.28 WIT with a distance of 69,817,000 kilometers from the Sun.
7. The Moon-Mars Conjunction
The peak of the Martian-Moon conjunction occurred on September 8 at 02.36 WITA/03.36 WITA/04.36 WIT with a separation angle of 3.8 degrees. This phenomenon can be seen since the night before, from the west about 15 minutes after sunset for 5 minutes, and can only be witnessed using a tool.
This phenomenon occurs when the conjunction of the Moon is in the initial crescent phase with an illumination of 0.3%. While Mars has a magnitude of 1.68. The Moon-Mars split angle is 6.66 degrees to 6.61 degrees.
8. Moon-Mars-Mercury Triple Conjunction
The phenomenon of the Moon-Mars-Mercury triple conjunction sky phenomenon can be seen with the naked eye, about 20 minutes after sunset on September 8.
At triple conjunction, the Moon is in the initial crescent phase with an illuminance of 2.5 to 2.6%. The magnitude of Mars varies from 1.69 to 1.68. While the magnitude of Mercury is fairly constant at 0.18.
The Mercury-Moon split angle is 10.3 degrees, while the Moon-Mars angle is 8.5 degrees. Mars set first at 18:30 local time, followed by the Moon setting 30 minutes later. Mercury sets last, around 7:30 p.m. local time
