What are the September Epsilon Perseids?

The September Epsilon Perseids (often abbreviated SPE) are a minor annual meteor shower active in early September. They take their name from their radiant—the point in the sky from which the meteors appear to fan out—located near the star Epsilon Persei in the constellation Perseus. While not as prolific as August’s famous Perseids, this shower can still offer rewarding views of swift, fine meteors under dark skies.

The shower’s parent body has not been firmly established, but its meteoroids hit Earth’s atmosphere at high speeds, producing quick streaks that are often white and sometimes leave brief, delicate trains.

When to watch

The September Epsilon Perseids typically peak in the predawn hours of September 9 (local time), with useful activity for a few days on either side. Like most meteor showers, they are best after midnight and especially toward dawn, when your location on Earth rotates into the oncoming stream of particles and the radiant rides highest in the sky.

• Peak window: Predawn hours of September 9.
• Secondary nights: September 8 and 10 can also produce activity, though generally at lower rates.
• Watch duration: Plan for at least 1–2 hours to let your eyes fully adapt and to catch natural bursts and lulls.

The Moon’s phase varies by year; moonlight can significantly reduce the number of meteors you see. If the Moon is bright, try to position it behind a building, tree line, or use your body to block its glare.

Where to look

Face generally northeast to east in the Northern Hemisphere, where the constellation Perseus climbs higher as the night advances. You don’t need to stare directly at the radiant; in fact, looking 45–90 degrees away gives you longer meteor trails that are easier to spot.

• Northern Hemisphere: Best visibility from mid-northern latitudes; Perseus rises high before dawn.
• Equatorial regions: Still visible, though the radiant is lower; expect somewhat fewer meteors.
• Southern Hemisphere: Possible from low to mid-southern latitudes, but the radiant remains low and rates are modest.

Helpful sky landmarks: Perseus sits near Cassiopeia’s “W” and the sprawling Andromeda. If you can find Cassiopeia, you’re close to the right neighborhood.

What you’ll see and how many to expect

Expect a modest display. Under dark, transparent skies with the radiant high, the September Epsilon Perseids typically produce low single-digit meteors per hour for most observers. That number can be lower under light-polluted skies or if the radiant is low. Patience pays off—meteors often arrive in clusters with quiet gaps between.

Meteors from this shower are generally fast and can be crisp, needle-like streaks. A few may leave short-lived trains—glowing trails that persist for a second or two. Fireballs are uncommon but not impossible.

How to get the best view

• Choose darkness: Get as far from city lights as practical. Rural skies dramatically increase your count.
• Time it right: Aim for 2–3 hours before local dawn on or near September 9, when the radiant is highest.
• Give your eyes time: Allow 20–30 minutes for dark adaptation; avoid looking at phone screens or use a red-light mode.
• Get comfortable: Use a reclining chair or blanket so you can scan a wide patch of sky without neck strain.
• Mind the weather: Clear, dry air is ideal. High humidity or haze can dim faint meteors.
• Dress for the chill: Predawn hours can be cool. Bring layers, a hat, and warm drinks.
• Block stray light: Shield your view from nearby streetlights, car headlights, or the Moon if it’s up.

Photography tips

• Use a sturdy tripod and a wide, fast lens (e.g., 14–35 mm at f/2–f/2.8 if available).
• Manual focus on a bright star, then tape the focus ring to prevent drift.
• Try exposures of 10–25 seconds at ISO 1600–6400, adjusting for your sky brightness and lens speed.
• Shoot continuous frames with an intervalometer to maximize your chances of catching meteors.
• Point roughly 45–60 degrees away from the radiant to record longer, more dramatic trails.
• Capture context: Include a horizon, trees, or a foreground landmark for scale and interest.

Why predawn is best

Two factors make the late-night to dawn window ideal. First, the radiant near Epsilon Persei climbs higher toward morning, reducing atmospheric extinction and increasing the chance that a visible meteor will occur in your sky. Second, by morning your location on Earth is turned into the direction of Earth’s motion, so you’re effectively running headlong into more meteoroids.

How this shower differs from the August Perseids

Despite the similar name and radiant region, the September Epsilon Perseids are a distinct stream from the well-known August Perseids. They arrive about a month later, feature fewer meteors on average, and have their own characteristic radiant near Epsilon Persei. Both streams produce fast meteors, but only the August Perseids are tied to Comet Swift–Tuttle.

Light pollution and the Moon

Sky brightness is the biggest factor after weather. Even moderate light pollution can erase the faintest half of meteors. If the Moon is bright during your observing year, try to observe after moonset or put the Moon behind a building or hill. A sky quality meter or an online light pollution map can help you pick the darkest reachable site.

If you’re clouded out

• Try consecutive mornings: Activity often spans a few days around the peak.
• Look for livestreams: Observatories and skywatching groups sometimes host live meteor-cam feeds.
• Try radio meteor detection: Reflections of radio signals off meteor trails can be heard or logged even under clouds or daylight.

Safety and etiquette

• Observe from legal, safe locations. If on public land, check hours and regulations.
• Use dim red lights to preserve night vision and avoid disrupting others’ views.
• Pack out all trash and respect wildlife, especially during quiet predawn hours.

Key takeaways

• Peak: Predawn hours of September 9 (local time), with activity on adjacent mornings.
• Where: Face generally northeast/east; look 45–90 degrees away from the radiant for the longest trails.
• Expectations: A modest, enjoyable minor shower—dark skies and patience are essential.
• Best for: Northern Hemisphere observers, though some activity is possible elsewhere.

Whether you catch a handful of swift streaks or luck into a brief burst, the September Epsilon Perseids offer a peaceful, early-autumn skywatching session that rewards anyone willing to rise before dawn and look up.