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November Celestial Events: Planetary Alignments, Supermoon, and Comet Hartley-IRAS

A comprehensive guide to November's major astronomical phenomena including meteor showers and planetary conjunctions.

Popular Science2 min

1November Planetary Alignment

Throughout November, Venus, Mars, and Jupiter remain in a visible morning alignment. Mercury joins this group mid-month, appearing low in the southeastern horizon just before dawn. These planets are often difficult to track due to solar haze, but their collective positioning provides a unique opportunity for observers to identify multiple celestial bodies simultaneously.

2Mars and Jupiter Conjunction

On November 16, Mars and Jupiter reach a conjunction point in the eastern sky. The two planets appear to move closer together throughout the month, culminating in a waltz-like alignment near the star Regulus. Observers should prioritize safety by concluding their viewing sessions before the sun rises to avoid potential eye damage.

3Leonids Meteor Shower Peak

The Leonids meteor shower reaches its predicted peak on November 18, with a radiant point located within the constellation Leo. While typical activity ranges from 10 to 15 meteors per hour, the shower has historically produced intense outbursts, such as the 1966 event where thousands of meteors were visible every single minute.

4Full Beaver Supermoon Details

The Full Beaver Supermoon occurs on November 24, marking the first of three consecutive supermoon events. Peak illumination is calculated at 9:50 a.m. EST, though the moon will appear brightest to observers on the evenings of November 23 and 24. It is named for the seasonal habits of North American dam-building rodents.

5Indigenous Lunar Nomenclature

Cultural naming conventions for the November moon vary significantly across Indigenous nations. The Tlingit refer to it as the Digging Moon, while the Algonquin identify it as the Whitefish Moon. Additionally, the Dakota and Lakota nations traditionally call it the Deer Rutting Moon, reflecting specific animal behaviors observed during the autumn season.

6Comet 161P/Hartley–IRAS Perihelion

Comet 161P/Hartley–IRAS reaches perihelion on November 27, marking its closest approach to the sun. With a magnitude of approximately 12, the comet is not visible to the naked eye. Observers require a telescope with at least a 7.8-inch aperture, pointed toward the east-northeast horizon, to successfully track this rare celestial visitor.

7Optimal Stargazing Best Practices

Successful observation of these events requires minimizing exposure to light pollution by moving away from urban centers. Observers must allow their eyes sufficient time to adjust to the darkness before beginning their session. Reviewing specific technical stargazing tips is recommended to ensure the best possible experience when tracking faint objects like comets.

8Scientific Significance of Observations

November offers a diverse range of phenomena, from planetary alignments to rare comet passes that occur only once every 21 years. These events provide a practical application for amateur astronomy equipment. By tracking these specific dates and positions, enthusiasts can witness the dynamic nature of our solar system's ongoing orbital movements.

Original article: Popular Science — November Celestial Events: Planetary Alignments, Supermoon, and Comet Hartley-IRAS