Universe Guide


Eta Eridanids Meteor Shower

The Eta Eridanids meteor shower takes place within the boundaries constellation of the Eridanus. The meteor showers occurs between 3 Aug- 14 Aug with the peak occuring on the 09-Aug every year The Solar Longitude, mistakenly known as Lambda Omicron is 137 degrees. This value sometimes expressed as S.L. or λ ☉ 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 Eta Eridanids has a very low zenith hourly rate so don`t expect anything spectacular like you might see with the Geminids or Perseids. The latter of the two occurs at roughly the same time. They are quite swift at a speed of about 65km/s. Although possible of up to 6 per hour, its more likely that its only one. Ref: IMO

Although attributed to the Chacornac comet, it could also be attributed to Comet Pons-Gambart but the former is more likely to be the source. It is a relatively newly discovered meteor shower compared to other meteor shower. Pons-Gambart return has only be recorded in 1827, it is considered to be a lost comet. Chacornac is a long time period comet whereas Pons-Gambart is about 65 years. Ref: Harvard

The source of the meteor shower is C/1852 K1 (Chacornac)?. The closest star to the radiant point of the meteor shower is Azha. The coordinates can also be determined by the Right Ascension (43.7) and the Declination (-11.9).

The Zenith Hourly Rate or how many you expect to see during the hour is 6. The ZHR can radically increase if the comet or associated object is close by. The speed/velocity of the Meteor Shower particles is 65 km/s.

Recent and Forthcoming Meteor Showers :-

Eta Eridanids Meteor Shower Facts

Associated AsteroidC/1852 K1 (Chacornac)?
Closest Star to Radiant PointAzha
Max Activity Date09 Aug
Activity Period3 Aug- 14 Aug
Right Ascension43.7
Solar Longitude / λ ☉137 °
Zenith Hourly Rate6
Semi-Major Axis10.3300

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Renoda VanhoutenWednesday, 2nd August 2017 1:20:18 AM
Will this be visible in the state of Georgia in the united states.