Universe Guide

Eta Eridanids Meteor Shower

When and where does the Eta Eridanids Meteor Shower Occur

The Eta Eridanids  meteor shower takes place within the boundaries constellation of Eridanus. The meteor shower occurs between 3 Aug- 14 Aug with the peak occurring on the 09-Aug every year.

The Solar Longitude (Abbrev: S.L., λ ☉) is 137 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 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).

Zenith Hourly Rate

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.

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

When to see the Eta Eridanids

Northern Hemisphere

Azha, the namesake star is not visible until the early hours of the morning, about 2 a.m. in London and Miami. You don't have much time to see as it gets light quite early because its in summer. The star rises in a East to South-East direction whereas in the south, its just an easterly direction.

Southern Hemisphere

Azha rises above the horizon two hours earlier in the southern hemisphere and therefore you have two more hours to view the meteor shower. The star rises in an easterly direction.

Recent and Forthcoming Meteor Showers :-

Eta Eridanids Meteor Shower Facts

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

Location of the Radiant Point for the Eta Eridanids Meteor Shower

Map showing the location of where the Eta Eridanids radiate from within Eridanus

The image showing the location of Eta Eridanids was generated using the free application Night Vision.

Comments and Questions

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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.
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