Lunar occultation of Antares (Alpha Scorpii)

The Moon will pass in front of Antares (Alpha Scorpii), creating a lunar occultation visible from parts of Canada, United States and Mexico. Due to the closeness of the Moon to the Earth, a lunar occultation is not visible all the world.

Visibility: Visible with binoculars

Observing time:

• Mexico City: not observable
• Bogota: not observable
• Madrid: not observable

Close approach of Moon and Saturn

Moon and Saturn will make a close approach, passing within 2º16' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 18:41 - 06:12
• Bogota: 17:44 - 05:41
• Madrid: 20:44 - 07:27

Supermoon

Due to the closeness of the Full Moon and the Moon at Perigee events, this month the Full Moon will appear larger than normal.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 18:40 - 05:54
• Bogota: 18:25 - 06:42
• Madrid: 21:04 - 06:15

Full Moon

The Moon will be almost exactly on the other side of the Sun and will appear fully illuminated.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 18:57 - 06:52
• Bogota: 17:04 - 05:22
• Madrid: 20:21 - 06:28

Moon at First Quarter

The Moon will pass first quarter phase, during this time it appears almost exactly half illuminated.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 12:47 - 23:43
• Bogota: 11:41 - 23:30
• Madrid: 15:17 - 00:33

Full Moon

The Moon will be almost exactly on the other side of the Sun and will appear fully illuminated.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 18:40 - 05:54
• Bogota: 18:25 - 06:42
• Madrid: 21:04 - 06:15

Lunar occultation of Delta Scorpii (Dschubba)

The Moon will pass in front of Delta Scorpii (Dschubba), creating a lunar occultation visible from Antarctica. Due to the closeness of the Moon to the Earth, a lunar occultation is not visible all the world.

Visibility: Visible with binoculars

Observing time:

• Mexico City: not observable
• Bogota: not observable
• Madrid: not observable

The Moon at perigee

The Moon will reach the closest point along its orbit to the Earth and will appear slightly larger than at other times.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 23:52
• Bogota: 00:52 (August 2)
• Madrid: 07:52 (August 2)

Uranus enters retrograde motion

Uranus will enter retrograde motion, halting its usual eastward movement through the constellations, and turning to move westwards instead.
This reversal of direction is a phenomenon cuased the change of perspective due to Earth's and the outer planet's position. It occurs a few months before they reach opposition.

Visibility: Visible with binoculars

Observing time:

• Mexico City: 23:03 - 05:24
• Bogota: 00:16 - 04:58
• Madrid: 23:59 - 06:28 (August 29)

Moon at Last Quarter

The Moon will pass last quarter phase, during this time it appears almost exactly half illuminated.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 23:50 - 12:47
• Bogota: 23:30 - 11:47
• Madrid: 00:51 - 15:05

Saturn reaches opposition

Saturn will reach opposition and will be visible for much of the night, when it lies opposite to the Sun in the sky in the constellation of Aquarius.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 19:44 - 05:35
• Bogota: 18:44 - 05:07
• Madrid: 22:01 - 06:37

Moon at perihelion

Moon will reach the closest point along its orbit to the Sun, at a distance of 1.0099 AU.

Visibility: Not observable

Conjunction of Moon and Mercury

Moon and Mercury will share the same right ascension, with Moon passing 6º56' to the north of Mercury.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 08:04 - 20:11
• Bogota: 07:25 - 19:30
• Madrid: 09:41 - 21:53

κ-Cygnid meteor shower 2023

The κ-Cygnid meteor shower 2023 will be active from August 3 to August 25, producing its peak rate of meteors around August 18. It will be best seen around the constellation of Cygnus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: all night
• Bogota: dusk - 03:46
• Madrid: all night

Conjunction of Moon and Mars

Moon and Mars will share the same right ascension, with Moon passing 2º10' to the north of Mars.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 08:21 - 20:35
• Bogota: 07:45 - 19:51
• Madrid: 09:50 - 22:17 (August 19)

Close approach of Moon and Mars

Moon and Mars will make a close approach, passing within 1º55' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 08:22 - 20:35
• Bogota: 07:45 - 19:52
• Madrid: 09:50 - 22:17 (August 19)

The Moon at perigee

The Moon will reach the closest point along its orbit to the Earth and will appear slightly larger than at other times.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 09:54
• Bogota: 10:54
• Madrid: 17:54

Close approach of Moon and Saturn

Moon and Saturn will make a close approach, passing within 2º15' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:34 - 08:07
• Bogota: 19:42 - 07:39
• Madrid: 22:35 - 09:24

Conjunction of Moon and Saturn

Moon and Saturn will share the same right ascension, with Moon passing 2º29' to the south of Saturn.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 18:41 - 06:12
• Bogota: 17:44 - 05:41
• Madrid: 20:44 - 07:27

Mercury at highest altitude in evening sky

Mercury will reach its highest point in the sky in its July - August 2023 evening apparition. It will be shining brightly at mag 0.3.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 19:11 - 20:35
• Bogotá: 18:10 - 19:45 (August 6)
• Madrid: 21:33 - 22:39

Perseid meteor shower 2023

The Perseid meteor shower 2023 will be active from July 17 to August 24, producing its peak rate of meteors around August 13. It will be best seen around the constellation of Perseus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 22:04 - 05:51
• Bogota: 23:09 - 05:29
• Madrid: all night

Mercury at dichotomy

Mercury will reach half phase in its July - August 2023 evening apparition. It will be shining brightly at mag 0.2.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 19:08 - 20:30
• Bogota: 18:09 - 19:44
• Madrid: 21:21 - 22:20

Venus at solar inferior conjunction

Venus will pass very close to the Sun in the sky as its orbit carries it between the Sun and Earth. At closest approach, it will appear at a separation of only 7º from the Sun.

Visibility: Not observable

Conjunction of Moon and Saturn

Moon and Saturn will share the same right ascension, with Moon passing 2º28' to the south of Saturn.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:34 - 08:07
• Bogota: 19:42 - 07:39
• Madrid: 22:35 - 09:24

M15 well placed

The globular cluster M15 will be well placed, high in the sky. It will reach its highest point in the sky in the constellation of Pegasus at around midnight local time.

Visibility: Visible with binoculars

Observing time:

• Mexico City: 19:59 - 05:19
• Bogota: 19:19 - 04:26
• Madrid: all night

Close approach of Moon and The Pleiades (M45)

Moon and The Pleiades (M45) will make a close approach, passing within 1º20' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 00:33 - 13:51
• Bogota: 00:22 - 12:43
• Madrid: 01:19 - 16:25

Mercury at greatest elongation east

Mercury will reach its greatest separation from the Sun in its July - August 2023 evening apparition. It will be shining brightly at mag 0.3.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 19:08 - 20:30
• Bogota: 18:09 - 19:44
• Madrid: 21:21 - 22:20

Asteroid Hygiea reaches opposition

The asteroid 10 Hygiea will reach opposition and will be visible for much of the night, when it lies opposite to the Sun in the sky in the constellation of Aquarius.

Visibility: Visible with a 4 inch telescope

Observing time:

• Mexico City: 20:33 - 04:41
• Bogota: 19:28 - 04:18
• Madrid: 23:12 - 05:20

Mercury at aphelion

Mercury will reach the furthest point along its orbit to the Sun, at a distance of 0.47 AU

Visibility: Not observable

M2 well placed

The globular cluster M2 will be well placed, high in the sky. It will reach its highest point in the sky in the constellation of Aquarius at around midnight local time.

Visibility: Visible with a small telescope

Observing time:

• Mexico City: 20:11 - 05:01
• Bogota: 19:21 - 04:23
• Madrid: all night

Moon at aphelion

Moon will reach the furthest point along its orbit to the Sun, at a distance of 1.0122 AU

Visibility: Not observable

New Moon

The Moon will pass close to the Sun and become lost in the its glare for a few days.

Visibility: Not observable

Moon at apogee

The Moon will reach the furthest point along its orbit to the Earth and will appear slightly smaller than at other times.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 05:54
• Bogota: 06:54
• Madrid: 13:54

Venus at aphelion

Venus will reach the furthest point along its orbit to the Sun, at a distance of 0.73 AU

Visibility: Not observable

Close approach of Moon and Jupiter

Moon and Jupiter will make a close approach, passing within 2º39' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 23:53 - 12:41
• Bogota: 23:30 - 11:44
• Madrid: 01:01 - 14:52

Conjunction of Moon and Jupiter

Moon and Jupiter will share the same right ascension, with Moon passing 2º52' to the north of Jupiter.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 23:53 - 12:41
• Bogota: 23:30 - 11:44
• Madrid: 01:01 - 14:52

Asteroid Flora reaches opposition

Asteroid 8 Flora will reach opposition and will be visible for much of the night, when it lies opposite to the Sun in the sky in the constellation of Aquarius.

Visibility: Visible with a 4 inch telescope

Observing time:

• Mexico City: 21:01 - 04:45
• Bogota: 19:52 - 04:34
• Madrid: 23:56 - 05:01 (August 27)