Astronomy Calendar

• 1
  The Sombrero Galaxy is well placed  Remind MeThe Sombrero Galaxy M104 (NGC 4594; mag 8.6) in Virgo culminates at around midnight local time.
  Moon at Last Quarter  Remind MeThe Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise.
• 3
  Conjunction of Venus and Neptune  Remind MeVenus and Neptune share the same right ascension, at a separation of 17'.
• 4
  Messier 94 is well placed  Remind MeM94 (mag 8.2), a spiral galaxy in Canes Venatici culminates at around midnight local time.
  The Jewel Box cluster is well placed  Remind MeThe Jewel Box open star cluster (NGC 4755, also known as the Kappa Crucis Cluster; mag 4.2) in Crux culminates at around midnight local time.
• 5
  Conjunction of the Moon and Mars  Remind MeThe Moon and Mars share the same right ascension, at a separation of 1°58'.
  Close approach of the Moon and Mars  Remind MeThe Moon and Mars pass close to each other.
• 6
  Conjunction of the Moon and Saturn  Remind MeThe Moon and Saturn share the same right ascension, at a separation of 1°13'.
  Close approach of the Moon and Saturn  Remind MeThe Moon and Saturn pass close to each other.
  Lunar occultation of Saturn  Remind MeThe Moon will pass in front of Saturn, creating a lunar occultation visible from Antarctica.
  The Moon at perihelion  Remind MeThe Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon.
• 7
  Close approach of the Moon and Venus  Remind MeThe Moon and Venus pass close to each other.
  Lunar occultation of Venus  Remind MeThe Moon will pass in front of Venus, creating a lunar occultation visible from countries and territories including the Contiguous United States, Canada, Mexico and Greenland amongst others.
  Conjunction of the Moon and Venus  Remind MeThe Moon and Venus share the same right ascension, at a separation of 23'.
  The Moon at perigee  Remind MeThe Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month.
• 8
  Asteroid 532 Herculina at opposition  Remind MeAsteroid 532 Herculina makes closest approach to the Earth.
  Total solar eclipse  Remind MeThere will be an eclipse of the Sun,visible from south-easternCanada, Mexico and the easternContiguous United States.
  New Moon  Remind MeThe Moon disappears into the Sun's glare for a few days.
• 10
  Close approach of Saturn and Mars  Remind MeSaturn and Mars pass within 26' of each other.
  Conjunction of the Moon and Jupiter  Remind MeThe Moon and Jupiter share the same right ascension, at a separation of 3°59'.
  Conjunction of Saturn and Mars  Remind MeSaturn and Mars share the same right ascension, at a separation of 28'.
• 11
  Close approach of the Moon and M45  Remind MeThe Moon and M45 pass close to each other.
  Mercury at inferior solar conjunction  Remind MeMercury passes around the near side of the Sun.
• 12
  Lunar occultation of Beta Tauri  Remind MeThe Moon will pass in front of Beta Tauri (Elnath), creating a lunar occultation visible from Polynesia, Kiribati, Jarvis Island, Kingman Reef, Palmyra Atoll and Tokelau.
• 13
  Centaurus A is well placed  Remind MeCentaurus A (NGC 5128; mag 7.0) culminates at around midnight local time.
  Omega Centauri is well placed  Remind MeThe brightest globular cluster in the sky, Omega Centauri (mag 3.6) culminates at around midnight local time.
• 14
  136199 Eris at solar conjunction  Remind Me136199 Eris is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next.
  The Whirlpool Galaxy is well placed  Remind MeThe Whirlpool Galaxy M51 (NGC 5194; mag 8.4) in Canes Venatici culminates at around midnight local time.
• 15
  Moon at First Quarter  Remind MeThe Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight.
  Messier 83 is well placed  Remind MeThe Southern Pinwheel Galaxy M83 (NGC 5236; mag 7.2), a face-on spiral galaxy in Hydra culminates at around midnight local time.
• 17
  Messier 3 is well placed  Remind MeThe globular cluster M3 (NGC 5272; mag 6.3) in Canes Venatici culminates at around midnight local time.
• 19
  The Moon at apogee  Remind MeThe Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month.
• 20
  Conjunction of Jupiter and Uranus  Remind MeJupiter and Uranus share the same right ascension, at a separation of 31'.
  136108 Haumea at opposition  Remind Me136108 Haumea lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night.
• 21
  Comet 12P/Pons-Brooks reaches peak brightness  Remind MeComet 12P/Pons-Brooks is forecast to reach the brightest point in its 2024 apparition.
  Comet 12P/Pons-Brooks passes perihelion  Remind MeComet 12P/Pons-Brooks makes its closest approach to the Sun.
• 22
  Lyrid meteor shower 2024  Remind MeThe Lyrid meteor shower reaches its peak.
  Messier 101 is well placed  Remind MeThe Pinwheel Galaxy M101 (NGC 5457; mag 7.9) in Ursa Major culminates at around midnight local time.
• 23
  π-Puppid meteor shower 2024  Remind MeThe π-Puppid meteor shower reaches its peak.
  Full Moon  Remind MeThe Moon reaches full phase and is visible for much of the night.
• 26
  The Moon at aphelion  Remind MeThe Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon.
  Lunar occultation of Antares  Remind MeThe Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from Africa, Asia, Australia and New Zealand and British Indian Ocean Territory.
• 27
  Conjunction of Mars and Neptune  Remind MeMars and Neptune share the same right ascension, at a separation of 2'14".
  Close approach of Mars and Neptune  Remind MeMars and Neptune pass within 2'03" of each other.
• 30
  Mercury at aphelion  Remind MeMercury passes the furthest point along its orbit from the Sun.