The Solar Longitude (Abbrev: S.L., λ ☉) is 188 degrees, this value is the the date of maximum activity. It is measured as a degree with zero degree indicating spring equinox (roughly March 21st/22nd). 90 is the Summer Solstice, 180 is the Autumn Equinox and 270 is the Winter Solstice. This degree is independent of the calender. AMS .
The source of the meteor shower is Asteroid 2005 UD. The coordinates can also be determined by the Right Ascension (156.6) and the Declination (-2.4).
The Zenith Hourly Rate or how many you expect to see during the hour is 20. The ZHR can radically increase if the comet or associated object is close by. The speed/velocity of the Meteor Shower particles is 33 km/s.
The Daytime Sextantids are going to be one of the hardest meteor showers to be able to view. The radiant point is very close to where the Sun is located so not taking precautions may result in eye damage. If you do decide to try to view them, use solar filters/glasses to look.
It is possible to see the Sextantids before the Sun rises but you will need to be up at about 4 to 5 o'clock in the morning to see them. This is the best time to see them in fact when the Sun won't be up and block the view. You will need to look just above the horizon in a East to South East direction. The Sextantids will be visible until 4 p.m. when they drop below the horizon.
The picture below was drawn using Stellarium, an awesome free astronomy program. The picture shows where to look around 5:31 on 27th September which is the max activity date for the meteor shower.
The best time to see the Sextantids is the same as in the northern hemisphere, before the Sun appears at about 4:31, an hour earlier than the northern hemisphere. You need to look in the same direction, easterly. Whilst in the northern hemisphere, the shower tracks the shower, in the southern, the meteor shower leads the Sun.
|Associated Asteroid||2005 UD|
|Peak Activity Date||27-Sep|
|Activity Period||9 Sep- 9 Oct|
|Solar Longitude / λ ☉||188 °|
|Zenith Hourly Rate||20|
The image showing the location of Daytime Sextantids was generated using the free application Stellarium.
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