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Astronomy Events

2018 Astronomical Event Calendar


This listing gives notable astronomical events in our solar system, including eclipses, meteor showers, periodic comets, phases of the moon, and motions of the planets.

December 2017

Dec 3: Full Moon phase (Supermoon, Cold Moon)
Dec 13-14: Geminid meteors
Dec 18: New Moon phase
Dec 21: Winter solstice (16:28 UTC)
Dec 21-22: Ursids meteors

January 2018

Jan 1: Mercury at greatest western elongation
Jan 2: Full Moon phase (Supermoon)
Jan 3-4: Quadrantids meteor shower
Jan 7: Conjunction of Mars & Jupiter
Jan 17: New Moon phase
Jan 31: Full Moon phase (Blue Supermoon)
Jan 31: Total lunar eclipse


February 2018

Feb 15: New Moon phase
Feb 15: Partial solar eclipse
Feb 21: Conjunction of Venus & Neptune
Feb 25: Conjunction of Mercury & Neptune


March 2018

Mar 2: Full Moon phase
Mar 15: Mercury at greatest eastern elongation
Mar 17: New Moon phase
Mar 20: Vernal equinox (16:15 UTC)
Mar 29: Conjunction of Venus & Uranus
Mar 31: Full Moon phase (Blue Moon)


April 2018

Apr 16: New Moon phase
Apr 22-23: Lyrid meteors
Apr 29: Mercury at greatest western elongation
Apr 30: Full Moon phase


May 2018

May 6-7: Eta Aquarid meteors
May 9: Jupiter at opposition
May 15: New Moon phase
May 29: Full Moon phase


June 2018

Jun 13: New Moon phase
Jun 21: Summer Solstice(10:07 UTC)
Jun 27: Saturn at opposition
Jun 28: Full Moon phase


July 2018

Jul 12: Mercury at greatest eastern elongation
Jul 13: New Moon phase
Jul 13: Partial solar eclipse
Jul 27: Full Moon phase (Buck Moon)
Jul 27: Mars at opposition
Jul 28-29: Southern Delta Aquarids meteors


August 2018

Aug 11: New Moon phase
Aug 11: Partial solar eclipse
Aug 12-13: Perseids meteors
Aug 17: Venus at greatest eastern elongation
Aug 26: Full Moon phase
Aug 26: Mercury at greatest western elongation


September 2018

Sep 7: Neptune at opposition
Sep 9: New Moon phase
Sep 23: Autumnal Equinox(01:54 UTC)
Sep 25: Full Moon phase


October 2018

Oct 8: Draconids meteors
Oct 9: New Moon phase
Oct 21-22: Orionids meteors
Oct 23: Uranus at Opposition
Oct 24: Full Moon phase (Hunters Moon)


November 2018

Nov 5-6: Taurids meteors
Nov 6: Mercury at greatest eastern elongation
Nov 7: New Moon phase
Nov 17-18: Leonid meteors


December 2018

Dec 7: New Moon phase
Dec 7: Conjunction of Mars & Neptune
Dec 13-14: Geminid meteors
Dec 15: Mercury at greatest western elongation
Dec 21: Winter solstice (22:23 UTC)
Dec 7: Conjunction of Mercury & Jupiter
Dec 21-22: Ursids meteors
Dec 22: Full Moon phase/b>



Astronomy Event Definitions:

Apogee: point in the Moon's orbit when it is farthest from Earth.

Conjunction: Occurs when two or more bodies appear close together in the sky.

Elongation: is the apparent angular separation of an object from the Sun. Greatest elongation is best for viewing as it is at it's highest point above the horizon.

Inferior conjunction: When planet Mercury or Venus pass between the Sun and the Earth.

Occultation: Passage of one object in front of a smaller one, thus obscuring all or part of the background object from view.

Opposition: When a planet farther from the Sun than Earth appears opposite the Sun in the sky. This is the best time to observe a planet as it is closet to the Earth.

Perigee: point in the Moon's orbit when it is nearest to Earth.

Stationary: Object appears motionless in the sky due to the turning point between its direct and retrograde motion.

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