GridHot.ID – There are a number sky phenomenon on the moon October 2021 this.
From shadowless days, to meteor showers.
Launching Tribunkaltim.co, friends must also record the date, so as not to miss watching it at home.
In this month of October, there are several celestial phenomena that you can watch from home.
Quoting Kompas.com, in October 2021, a number of interesting phenomena will decorate the Indonesian sky both during the day and at night. Four peaks of the meteor shower will enliven the sky view throughout this October.
Here are some celestial phenomena in October 2021, which you can watch and make sure to note the date.
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1. Aphelion Venus: 3 Oktober 2021
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 located at one of the two focal points of the orbit.
Researcher at the BRIN Lapan Space Science Center, Andi Princeg, said that Venus’ aphelion occurs once every 225 days on average, or in five years it occurs eight times.
Aphelion Venus this time will occur on October 3, 2021 at 11:07 WIB, 12:07 WITA, 13:07 WIT with a distance of 108,942,000 km from the Sun.
Aphelion Venus previously occurred on February 20, 2021 and will occur again on May 15 and December 26, 2022.
2. Mars Solar Conjunction: October 8, 2021
The second celestial phenomenon, the Solar Martian conjunction, is a configuration when Mars, the Sun and Earth are in a straight line and Mars is parallel to the Sun.
The peak of the Martian solar conjunction occurs on October 8 at 11:29 WIB, 12:29 WIT, 13:29 WIT. Mars is 243,738,000 km from the Sun with a magnitude of +1.65.
Unfortunately, Andi said, this phenomenon cannot be seen even with the help of any optical instrument. Because, it occurs right at noon when lighting from the sun is very disturbing vision towards the sky.
3. Draconid meteor shower peak: October 8, 2021
Indonesian amateur astronomer Marufin Sudibyo added that there was another interesting phenomenon that Indonesians could witness this October. This phenomenon is the peak of the Draconid meteor shower.
The Draconid meteor shower is a meteor shower known for its variation in intensity and has produced several meteor storms in the past (close to 1,000 meteors per hour).
The peak of the Draconoid meteor shower phenomenon can be seen throughout the night from 20.00 until dawn, on October 8, 2021.
4. Conjunction of the Moon – Venus: October 9, 2021
The conjunction of the Moon and Venus is an event as if the Moon and the planet Venus are gathered in the same location when viewed from Earth. Both will appear in a straight line.
This October sky phenomenon can be captured with a camera, better when combined with astrophotography techniques. Conjunction occurs at dusk after sunset, on October 9, 2021.
5. Mercury’s Inferior Conjunction: October 9-10, 2021
Inferior conjunction is a configuration when Earth, Mercury and the Sun are in a straight line.
The inferior conjunction is the same as the new Moon phase on the Moon, so Mercury is not visible either at dusk or dawn. Mercury’s inferior conjunction marks the shift of Mercury’s appearance from dusk to dawn.
This time the inferior conjunction will occur on October 9, 2021 at 23.11 WIB or October 10, 2021 at 00.11 WITA, 01.11 WIT with a separation angle of 1.9 degrees.
6. Mercury at dawn: October 17, 2021
After Mercury was last seen at dusk and inferior conjunction, Mercury has been observed again at dawn since October 17.
Mercury can be seen at the dawn of the sea from the east for 20 minutes and is located near the constellation Virgo.
Mercury’s magnitude is +1.16 and Mercury is 46.46 million km from the Sun.
7. Peak of the Geminid Epsilon meteor shower: 18-19 October 2021
Epsilon Geminid is a meteor shower whose radian point (from which the meteor appears) is located in the constellation Gemini near the star Epsilon Geminorium.
This meteor shower phenomenon is active from 14 to 27 October, and the maximum meteor intensity will occur on 19 October 2021 at 05.00 WIB, 06.00 WITA, 07.00 WIT.
8. Peak of the Orionid meteor shower: October 20, 2021
Another meteor shower peak phenomenon that you can see this month is the Orionid meteor shower.
The Orionid meteor shower is a meteor shower famous for its meteors originating from the crumbs of the legendary Halley’s comet.
Orionid meteors enter Earth’s atmosphere at a speed of 67 km/s. This meteor shower can only be seen from midnight until dawn.
9. Mercury’s Perihelion: October 20, 2021
Perihelion is generally the configuration when the planet is at its closest point from the Sun. This is due to the planet’s elliptical orbit with the Sun located at one of the two focal points of the orbit.
Andi explained that Mercury’s Perihelion occurs every 88 days on average or four times a year.
Mercury’s perihelion this time will occur on October 20, 2021 at 06.51 WIB, 07.51 Wita, 08.51 WIT with a distance of 46 million kilometers from the Sun.
Mercury’s perihelion previously occurred on January 29, April 27 and July 24, 2021. This phenomenon will occur again on January 16, April 14, July 11 and October 7, 2021.
10. The peak of the Leonis meteor shower: October 25, 2021
Leonis Minorid is a meteor shower whose radian point (from which the meteor appears) is located in the constellation Leo Minor, near the constellation Leo.
This meteor shower is active from 19 to 27 October, and the maximum meteor intensity will occur on 25 October 2021 at 09.00 WIB, 10.00 WIT, 11.00 WIT.
So, this meteor shower can be seen from the Northeast from 03.00 local time to 20 minutes before sunrise. The maximum intensity when the radian point is at the zenith is 3 meteors per hour.
11. Conjunction of the Moon – Pollux: October 28, 2021
Pollux is the main star in the constellation Gemini. This star is in conjunction with the Moon, its peak occurs at 03.40 WIT, 04.40 WITA, 05.40 WIT with a separation angle of 2.1°.
However, this phenomenon can be seen from the northeast to the north from midnight to 20 minutes before sunrise with a separation angle of 2.1°-2.5°.
The moon is in the final crescent phase with an illumination of 60.2 percent -59.4 percent while Pollux has a magnitude of +1.15.
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October 2021