Meteoroid stream geometry
On this page, you will find the geometry of major meteoroid streams relative to the Moon. The plots are made for 20:00 UTC in the night of the predicted maximum of the stream. They show the view as seen from the centre of the Earth. The blue area shows the part which can have impacts from stream meteoroids; the white part is the illuminated part of the Moon. All computations were done with a modified version of our ‘lif_simulation’ tool. It was tested relative to geometries shown by Madiedo et al. (2015).
Note that for checking when the Moon is above the horizon, we refer you to standard planetarium software. For more information on meteor showers, see the shower calendar of the International Meteor Organisation: https://www.imo.net/resources/calendar/.
Lyrids (LYR)
21 Apr 2025, 20:00 UTC, RA = 272.0 deg, Dec = +33.3 deg, ZHR = 18
Eta Aquarius (ETA)
05 May 2025 20:00 UTC, RA = 338 deg, Dec = -1 deg, ZHR = 50
01 May 2025, 20:00 UTC
Southern delta Aquariids (SDA)
29 Jul 2025, 20:00 UTC, RA = 331.0 deg, Dec = -16.4 deg, ZHR = 25
Perseids (PER)
12 Aug 2025 20:00 UTC, RA = 45.2 deg, Dec = 58.1 deg, ZHR = 100
Orionids (ORI)
22 Oct 2025, 20:00 UTC, RA = 96.2 deg, Dec = +15.8 deg, ZHR = 20
Leonids (LEO)
16 Nov 2025, 20:00 UTC, RA = 154 deg, Dec = 21.8 deg, ZHR = 15
Geminids (GEM)
13 Dec 2025 20:00 UTC, RA = 113.2 deg, Dec = +32.4 deg, ZHR = 150
