Sky event · 13 August 2027
Perseids 2027
The Perseids peak on 13 August 2027, 08:13 UT, with up to about 110 meteors an hour under a perfect dark sky, coming from Cassiopeia. The Moon is about 87 percent lit and waxing at the hour we state it for (13 August 2027, 09:00 UT).
Sets the map's clock to 13 August 2027, 09:00 UT and flies to the Moon.
Take the trip: Comets and meteor showers
The facts
- Peak, computed
- 13 August 2027, 08:13 UT
- Rate in a perfect sky
- up to about 110 an hour
- Radiant
- in Cassiopeia
- Parent body
- comet Swift-Tuttle
- Moon at 09:00 UT on 13 August 2027
- 87 percent lit, waxing
Where to look from your place
Choose a city to see what this looks like from there. With scripts off, the map's Tonight view works out the same for the place you set in it.
What to expect
The rate quoted for a shower (its ZHR, 110 for the Perseids) is what one observer would count in an hour under a perfect dark sky with the radiant overhead: from a town, or with the radiant low, it is a fraction. Lie back, look at a wide patch of sky away from lights, give your eyes twenty minutes, and expect meteors from any part of the sky, all tracing back to the radiant.
What the Moon will do
At 09:00 UT on 13 August 2027 the Moon is 87 percent lit and waxing. That is for anywhere on Earth; whether it is up from your place, and how high, is in the box above.
Sources
- IMO Meteor Shower Calendar 2027, Perseids: maximum August 13, 08h to 10h UT, ZHR 110+, the Moon waxing, read 4 November 2026
Measured or computed? Dates of the showers and of the eclipses are computed with Astronomy Engine, the same library the map uses, and were read by a person on 9 October 2026. The Moon's percentage is computed. Rates are the IMO's and are not predictions of what you will count.
From the blog
A solar eclipse simulator, and a clock you can drag
A solar eclipse simulator is a clock you can drag. What obeys when you scrub time on Space Radar's live map of space, what does not, and why it says so.
What Is in the Sky Tonight? Relearning to Look Up
Most of us have never seen the Milky Way from home. Here is what is in the sky tonight from a city balcony, and how to read it in ten minutes.
ISS pass tonight? Ask the sky over your own street
Is there an ISS pass tonight, and what else is up? How Space Radar's Tonight view works out the sky from a named street, and what “visible” really means.