Jakarta, CNN Indonesia —
a row space phenomenon will color the sky during the third week of November 2021. Among them are the Leonid Meteor Shower Peak, the Moon Apoge to the Alpha Monocerotid Meteor Shower Peak.
The Center for Space Science Research (Pussainsa-LAPAN) explained that a number of these phenomena can be seen in the Indonesian sky without the help of sensing. Here’s the phenomenon:
Peak of the Leonid Meteor Shower (18-19 November)
Leonid is a meteor shower whose radiant point is in the constellation Leo. This meteor shower is active from November 6 to November 30 and its maximum intensity occurs on November 19 at 04.15 WIB / 05.15 WITA / 06.15 WIT.
Pussainsa-LAPAN researcher Andi Pangerang explained that Leonid comes from the dust remnants of comet 55P/Temple-Tuttle which orbits the Sun with a period of 33.3 years and is one of several other meteor showers that are anticipated every year, in addition to Geminid, Lyrid, Perseids and Orionids.
“Leonid can be seen from 00.30 local time until the end of the dawn (25 minutes before sunrise) from east-northeast to north-northeast,” Andi wrote, as quoted from the official Pussainsa-LAPAN website.
Andi said the maximum intensity of this meteor shower ranges from 11-14 meteors per hour for the territory of Indonesia because the height of the radian point during transit varies from 52 degrees to 69 degrees. Make sure the field of view is free from obstructions, light pollution and clouds while observing.
Partial Lunar Eclipse (November 19)
Some parts of Indonesia will experience a partial lunar eclipse whose peak will occur at 16.02.56 WIB / 17.02.56 WITA / 18.02.56 WIT. The peak of the eclipse occurred a few minutes after the peak of the Full Moon phase which occurred at 15.57.30 WIB / 16.57.30 WITA / 18.57.30 WIT.
Andi explained that the magnitude of the eclipse this time was 0.9785 or only 97.85 percent of the diameter of the Moon covered by the Earth’s umbral disk. The penumbral eclipse phase starts at 13.00.23 WIB / 14.00.23 WITA / 15.00.23 WIT, then the partial eclipse phase begins at 14.18.24 WIB / 15.18.24 WITA / 16.18.24 WIT.
The partial eclipse phase ended at 17.47.26 WIB / 18.47.26 WITA / 19.47.26 WIT while the penumbral eclipse phase ended at 19.05.31 WIB / 20.05.31 WITA / 21.05.31 WIT.
“So, the duration of the partiality of the eclipse this time is 3 hours 29 minutes 2 seconds. While the duration of the penumbra cross eclipse is 6 hours 5 minutes 8 seconds,” added Andi.
The peak phase of the eclipse until the end of the penumbra was experienced by the province of West Papua (except Raja Ampat Regency), Papua province, and parts of Maluku province (Kep. Kei and Aru Islands).
The final phase, partly to the end of the penumbra, was experienced by some provinces of West Papua (Kab. Raja Ampat), North Maluku province, parts of Maluku province (except Kai and Aru Islands), all of Sulawesi, Nusa Tenggara, Kalimantan, Bali, East Java province. , Central Java province, DIY province.
Parts of West Java province (except Bekasi City, Bekasi Regency, Depok City, Bogor City, Bogor Regency, Sukabumi City, Sukabumi Regency, Cianjur Regency, Bandung City, Cimahi City and West Bandung Regency), some of the provinces of Kep. Riau (Kabupaten Kep. Anambas and Kab. Kep. Natuna) and parts of Bangka Belitung province (except West Bangka Regency).
While the final phase of the penumbra is experienced by all of Sumatra, some of the provinces of Kep. Riau (districts of Kep. Anambas and Kab. Kep. Natuna), part of Bangka Belitung province (West Bangka regency), Banten province, DKI Jakarta province and parts of West Java province (Bekasi City, Bekasi Regency, Depok City, Bogor City, Bogor Regency, Sukabumi City, Sukabumi Regency, Cianjur Regency, Bandung City, Cimahi City and West Bandung Regency).
Partial Lunar Eclipses have occurred on June 4, 2012, August 8, 2017 and July 17, 2019. The next Partial Lunar Eclipses will occur again on October 29, 2023, July 7, 2028 and June 16, 2030.
Full Moon Phase near the Ascending Node and the Pleiades Cluster (November 19-20)
After the Moon experienced a partial eclipse in early dusk, the Moon joined the Pleiades Cluster (Messier 44) at 19.21 WIB / 20.21 WITA / 21.21 WIT with a separation angle of 4.5 degrees and then was near the Ascending Knot the next day (20 November) at 00.59 .06 WIB / 01.59.06 WITA / 02.59.06 WIT at a distance of 405.665 kilometers from Earth.
“The ascending node is the intersection between the Moon’s orbit and the ecliptic where the Moon moves north of the ecliptic,” Andi said.
This phenomenon can be seen from east-northeast to west-northwest when the Moon sets after sunrise. The Pleiades Cluster has a magnitude of +1.20 and the magnitude of the Moon at full moon is 12.83 to 12.58.
Apoge of the Moon (20-21 November)
The Moon’s Apoge is the configuration when the Moon is farthest from Earth. This is due to the Moon’s elliptical orbit with the Earth at one of these foci.
Andi said that lunar perigee occurs every 27.32 days on average with intervals at the adjacent lunar apogee varying between 26.98-27.90 days.
“The narrower range compared to perigee is due to the fact that the Moon is also revolving around the Sun with the Earth. Thus, the Moon will experience greater perturbation with the Sun during perigee when compared to when apogee,” added Andi.
This month’s Apoge will occur on November 21, 2021 at 08.57.28 WIT / 09.57.28 WITA / 10.57.28 WIT.
Alpha Monocerotid Meteor Shower Peak (November 21-22)
According to Andi, Alfa Monocerotid is a meteor shower whose radian point (point of origin of the meteor’s appearance) is near the star Alfa Monocerotis. This meteor shower is active from November 15 to November 25 and its maximum intensity occurs on November 22 at 02.30 WIB / 03.30 WITA / 04.30 WIT. Alpha Monocerotid comes from the dust residue of comet C/1917 F1 (Mellish).
Alfa Monocerotid can be seen from 21:30 local time the previous night (November 21) until the end of dawn (25 minutes before sunrise) the next day (November 22) from east to west-northwest.
The maximum intensity of this meteor shower is around 4-5 meteors per hour for the territory of Indonesia because the height of the radian point during transit varies from 78 degrees to 90 degrees. Make sure the field of view is free from obstructions, light pollution and clouds when observing this meteor shower.
No need to use any tools unless you want to record it, you can use an all-sky camera with a 360-degree field of view directed at the zenith.
(mrh/mik)
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