An illustration of a comet.

A Bright New Comet is Approaching Earth

Anticipate a probable naked eye-visible magnitude of 4.9 on September 11.


A celestial marvel, Comet C/2023 P1 (Nishimura), is headed towards Earth, offering stargazers a potentially spellbinding sight come September.

Discovery and Journey

During an August night in Kakegawa, Japan, Hideo Nishimura’s lens caught a fleeting glimpse of a previously unknown comet, now christened after him. As with recent celestial discoveries, there’s still much to uncover about its path. NASA’s early calculations offer insights – a sunward journey every 520 years, hinting at its role as a resident comet of our solar system.

Mark your calendars for September 12, 2023. On this day, Nishimura will grace our skies, nearing Earth at a distance of 125 million km. Just five days later, the comet will have its intimate rendezvous with the Sun, being a mere 43.7 million km away. As observations continue, experts might adjust these details.

The Sigma-Hybrids Connection

Astronomical sleuths have noticed Nishimura’s path resembling Sigma-Hybrids, a meteor shower that paints the December skies. The comet’s proximity to the sun in September might litter its trail with debris, potentially boosting the meteor shower’s December display. A heightened meteor activity could validate Nishimura’s connection and its periodic nature.


Initial orbits around the Sun often challenge a comet’s existence. But each successive spin strengthens their core. Nishimura’s previous sunward trek enhances its odds of survival for future appearances. Charting its cosmic journey, the comet transitions from the Gemini constellation to Cancer, with scheduled visits to Leo and Virgo come September’s end.

Visibility and Magnitude

Nishimura’s brilliance is on the rise, with a magnitude of 7.3 as of now. Early risers, armed with binoculars or small telescopes, might catch its crescent tail’s splendor. Anticipate an eye-visible magnitude of 4.9 on September 11. That pre-dawn spectacle will feature the comet, a crescent moon, radiant Venus, and the star Adhafera from Leo’s emblematic sickle.

The comet’s September 15 close proximity to star Denebola will be a sight to behold, albeit briefly due to the sun’s glare. By September 17, during its sun-closest moment, its brilliance might peak at magnitude 3.2. However, as October unfolds and Nishimura drifts away from the Sun, its dazzle will wane, becoming a less frequent sight.


*The featured image is an artist’s rendering and not an image of the actual comet.

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Written by Ivan Petricevic

I've been writing passionately about ancient civilizations, history, alien life, and various other subjects for more than eight years. You may have seen me appear on Discovery Channel's What On Earth series, History Channel's Ancient Aliens, and Gaia's Ancient Civilizations among others.

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