The Unpredictable June Bootids

Space Weather ^ | 2003 | editors / unattributed

[SunkenCiv]

The June Bootid meteor shower is active each year from June 26th until July 2nd. It peaks on June 27th. Normally the shower is very weak, but occasional outbursts produce a hundred or more meteors per hour.

The shower's radiant lies in the constellation Bootes (right ascension 14h 56m, declination 48o).

The source of the June Bootids is periodic comet 7P/Pons-Winnecke.

June Bootid meteoroids hit Earth's atmosphere with a velocity of 18 km/s (40,000 mph).They are considered slow-moving meteors.

On June 27th, 1998, northern sky watchers were surprised when meteors suddenly began to stream out of the constellation Bootes. Observers saw as many as 100 meteors per hour during the 7-hour-long outburst. It wasn't the first time: similar outbursts from Bootes had been recorded in 1916, 1921 and 1927. Astronomers call these unpredictable meteors the June Bootids.

The source of the June Bootids is comet 7P/Pons-Winnecke, which orbits the Sun once every 6.37 years. The comet follows an elliptical path that carries it from a point near the orbit of Earth to just beyond the orbit of Jupiter. Pons-Winnecke last visited the inner solar system in 2002. The comet's tail is evidently clumpy. When our planet passes through a dense spot in the debris stream, a meteor shower erupts.

Meteor forecasters D.J. Asher and V.V. Emel'yanenko (MNRAS 331, 1998, 126) have calculated that the comet dust seen in 1998 (trapped in the 1:2 mean-motion resonance with Jupiter) might return in 2003, although 2004 is more likely.

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TOPICS: Astronomy; Hobbies
KEYWORDS: astronomy; bootids; comet7pponswinnecke; meteors

[SunkenCiv]

This image shows the area of sky around the June Bootid radiant, indicated by a red dot. At 10 p.m. local time on June 27th, the radiant will be directly overhead as seen from mid--northern latitude observing sites.

Space Weather

[SunkenCiv]

June Bootids 2026: Complete guide to peak timing, visibility, what to expect
June Bootids, most unpredictable meteor shower, peaks this week
Geo News Digital Desk
Published June 22, 2026
https://www.geo.tv/latest/669871-june-bootids-2026-complete-guide-to-peak-timing-visibility-what-to-expect

[Texas Eagle]

Bootid call.

[BradyLS]

…With a clumpy tail.

[alexander_busek]

Meteor forecasters [...] have calculated that the comet dust seen in 1998 ([...] might return in 2003, although 2004 is more likely.

The tension is killing me!

En passant: "Boötes" is best spelled with a dieresis over the second "o," marking a separate syllable.

Regards,