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A.1 Meteor Showers (10-20 every hour; occur at night)

Some important showers are given in the following table.

SHOWER-NAME PEAK [RANGE] (RADIANT) (ZHRATE) CULM



Quadrantids Jan 03 [ -2, +2] (15h20m, +49°) (100/hour) 8am

Pi-Puppids II Jan 10 [ -4, +4] (07h32m, -43°) ( /hour) 12am

Delta-Cancrids Jan 17 [-12, +7] (08h40m, +20°) ( 5/hour) 1am

Alpha-Crucids Jan 19 [-13, +9] (12h48m, -63°) ( 5/hour) 5am

Lambda-Velids II Jan 21 [ -3, +5] (08h52m, -46°) ( /hour) 1am

Alpha-Carinids Jan 31 [ -7, +9] (06h20m, -54°) ( /hour) 10pm

Theta-Centaurids Feb 01 [ -9,+40] (14h00m, -40°) ( /hour) 5am

Alpha-Centaurids Feb 07 [-10,+14] (14h00m, -59°) ( 20/hour) 5am

Omicron-Centaurids Feb 11 [-11, +8] (11h48m, -56°) ( /hour) 2am

Delta-Leonids Feb 15 [-10,+33] (10h36m, +19°) ( 5/hour) 1am

Gamma-Normids Mar 14 [-18, +8] (16h36m, -51°) ( 10/hour) 5am

Beta-Pavonids Apr 07 [-27, +9] (20h32m, -63°) ( 10/hour) 7am

Lyrids Apr 22 [ -6, +3] (18h04m, +34°) (100/hour) 4am

Pi-Puppids Apr 23 [ -8, +5] (07h20m, -45°) ( 50/hour) 5pm

Alpha-Bootids Apr 27 [-13,+15] (14h32m, +19°) ( 5/hour) 12am

Eta-Aquarids* May 03 [-14,+25] (22h24m, -02°) ( 50/hour) 8am

Alpha-Scorpids May 03 [-38, +9] (16h00m, -27°) ( 10/hour) 1am

Ophiuchids N May 10 [-15,+21] (16h36m, -14°) ( /hour) 1am

Corona Australids May 15 [-22,+15] (18h56m, -40°) ( /hour) 3am

Kappa-Scorpids May 19 [-15, +8] (17h48m, -39°) ( /hour) 2am

Ophiuchids S May 20 [ -7, +6] (17h12m, -24°) ( /hour) 1am

Omega-Scorpids Jun 04 [-12,+11] (16h12m, -22°) ( /hour) 11pm

Chi-Scorpids Jun 05 [-12,+15] (16h32m, -14°) ( /hour) 12am

Gamma-Sagittarids Jun 06 [-15, +7] (18h08m, -28°) ( /hour) 1am

Theta-Ophiuchids Jun 13 [ -9,+32] (17h48m, -20°) ( /hour) 12am

Lyrids (Jun) Jun 16 [ -5, +5] (18h32m, +35°) ( 5/hour) 1am

Bootids (Jun) Jun 28 [ -2, +2] (14h36m, +49°) ( 2/hour) 8pm

Lambda-Sagittarids Jul 01 [-26,+24] (18h24m, -25°) ( /hour) 12am

Pegasids Jul 10 [ -3, +1] (22h40m, +15°) ( 10/hour) 3am

Phoenicids (Jul) Jul 15 [-21, +3] (01h24m, -43°) ( /hour) 6am

Piscis Austrinids Jul 29 [-20,+19] (22h44m, -30°) ( 10/hour) 2am

Delta-Aquarids S Jul 29 [-21,+21] (22h36m, -16°) ( 20/hour) 2am

Alpha-Capricornids Jul 30 [-27,+26] (20h28m, -10°) ( 10/hour) 12am

Iota-Aquarids S Aug 04 [-20,+21] (22h12m, -15°) ( 5/hour) 1am

Delta-Aquarids N Aug 12 [-28,+13] (22h28m, -05°) ( 5/hour) 1am

Perseids Aug 12 [-26,+12] (03h04m, +58°) (100/hour) 6am

Kappa-Cygnids Aug 19 [-16,+12] (19h04m, +59°) ( 5/hour) 9pm

Iota-Aquarids N Aug 20 [ -9,+31] (21h48m, -06°) ( 5/hour) 12am

Pi-Eridanids Aug 29 [ -9, +7] (03h28m, -15°) ( /hour) 5am

Alpha-Aurigids Sep 01 [ -8, +4] (05h36m, +42°) ( 20/hour) 7am

Delta-Aurigids Sep 09 [ -4,+31] (04h00m, +47°) ( 10/hour) 5am

Piscids Sep 20 [-36,+24] (00h32m, 00°) ( 5/hour) 1am

Kappa-Aquarids Sep 21 [-13, +9] (22h36m, -02°) ( 5/hour) 11pm

Capricornids (Oct) Oct 03 [-13,+11] (20h12m, -10°) ( 5/hour) 7pm

Sigma-Orionids Oct 05 [-25,+21] (05h44m, -03°) ( 5/hour) 5am

Draconids Oct 10 [ -4, +0] (17h28m, +54°) ( STORM) 4pm

Epsilon-Geminids Oct 20 [ -6, +7] (06h56m, +27°) ( 5/hour) 5am

Orionids* Oct 22 [-20,+16] (06h20m, +16°) ( 20/hour) 4am

Taurids S Nov 03 [-49,+22] (03h20m, +14°) ( 10/hour) 12am

Taurids N Nov 13 [-61,+12] (04h00m, +23°) ( 10/hour) 1am

Leonids Nov 18 [ -4, +3] (10h08m, +22°) ( STORM) 6am

Alpha-Monocerotids Nov 21 [ -6, +4] (07h48m, -06°) ( 5/hour) 4am

Chi-Orionids Dec 02 [ -6,+13] (05h28m, +23°) ( 5/hour) 1am

Phoenicids (Dec) Dec 06 [ -8, +3] (01h12m, -53°) (100/hour) 10pm

Sigma-Puppids II Dec 06 [ -9, +6] (06h48m, -45°) ( /hour) 2am

Monocerotids (Dec) Dec 10 [-13, +7] (06h40m, +14°) ( 5/hour) 1am

Sigma-Hydrids Dec 11 [ -8, +4] (08h28m, +02°) ( 5/hour) 3am

Geminids Dec 14 [ -7, +3] (07h28m, +33°) (100/hour) 2am

Coma Berenicids Dec 19 [ -7,+34] (11h40m, +25°) ( 5/hour) 6am

Ursids Dec 23 [ -6, +3] (14h28m, +75°) ( 50/hour) 8am

Tau-Puppids Dec 23 [ -4, +7] (06h56m, -50°) ( /hour) 1am

* Associated with debris from Comet Halley.

Major meteor showers, extracted from the above list, are given in the following table (in parenthesis is the solar longitude at the peak of the shower).

SHOWER-NAME PEAK [RANGE] (RADIANT) (ZHRATE) CULM SOLAR

LONG.

Quadrantids Jan 03 [ -2, +2] (15h20m, +49°) (100/hour) 8am 283.2°

Lyrids Apr 22 [ -6, +3] (18h04m, +34°) (100/hour) 4am 31.4°

Eta-Aquarids* May 03 [-14,+25] (22h24m, -02°) ( 50/hour) 8am 44 °

Delta-Aquarids S Jul 29 [-21,+21] (22h36m, -16°) ( 20/hour) 2am 125 °

Perseids Aug 12 [-26,+12] (03h04m, +58°) (100/hour) 6am 139.6°

Orionids* Oct 22 [-20,+16] (06h20m, +16°) ( 20/hour) 4am 207.8°

Taurids S Nov 03 [-49,+22] (03h20m, +14°) ( 10/hour) 12am 220 °

Leonids Nov 18 [ -4, +3] (10h08m, +22°) ( STORM) 6am 235 °

Geminids Dec 14 [ -7, +3] (07h28m, +33°) (100/hour) 2am 262.0°

Ursids Dec 23 [ -6, +3] (14h28m, +75°) ( 50/hour) 8am 270.7°

The range, in brackets, is the number of days before and after the peak of the shower. The center of the radiant is given in ascension and declination coordinates; typically the diameter of a radiant is about 5 or 10 degrees. The last column gives the culmination hour, which is the local time at which the radiant is highest in the sky.

On an average night there are about 10-20 meteors per hour that are visible, having a magnitude of 2 or brighter. During a meteor shower there are many more. The best time to see meteors is during the early morning, from about two hours after midnight until dawn, since your side of the Earth is then moving head on into any space debris.

The meteor showers listed above recur every year. See the Meteors.nb notebook.

Planetographic CoordinatesSunspots



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