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: 02:35
• Bogota: 02:35
• Madrid: 09:35

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 Capricornus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 21:00 - 06:30
• Bogota: 18:55 - 05:14
• Madrid: 22:31 - 06:12

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: 00:46 - 07:08
• Bogota: 23:34 - 05:36
• Madrid: 07:39 - 00:30

Conjunction of Moon and Jupiter

Moon and Jupiter will share the same right ascension, with Moon passing 3º57 to the south of Jupiter.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:30 - 06:40
• Bogota: 18:28 - 05:13
• Madrid: 21:45 - 06:38

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: 21:22
• Bogota: 21:22
• Madrid: 04:22

Mercury at solar superior conjunction

Mercury will pass very close to the Sun in the sky since it will be in the opposite side of the Sun. At closest approach, it will appear at a separation of only 1º41 from the Sun.

Visibility: Not observable

Close approach of Moon and Jupiter

Moon and Jupiter will make a close approach, passing within 3º44' of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:26 - 06:36
• Bogota: 18:24 - 05:09
• Madrid: 21:45 - 06:38

M15 well placed

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: 21:02 - 06:19
• Bogota: 19:18 - 04:26
• Madrid: 22:29 - 02:17

Conjunction of Moon and Saturn

Moon and Saturn will share the same right ascension, with Moon passing 3º42 to the south of Saturn.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:15 - 05:22
• Bogota: 18:22 - 04:05
• Madrid: 21:25 - 05:07

Moon at aphelion

Moon will reach the furthest point along its orbit to the Sun, at a distance of 1.0140 AU

Visibility: Not observable

Close approach of Moon and Saturn

Moon and Saturn will make a close approach, passing within 3º36 of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:15 - 05:22
• Bogota: 18:22 - 04.05
• Madrid: 21:25 - 05:07

Asteroid Julia reaches opposition

Asteroid 89 Julia 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: 21:06 - 05:58
• Bogota: 19:16 - 04:20
• Madrid: 22:11 - 06:10

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: 19:48 - 07:27
• Bogota: 18:31 - 06:53
• Madrid: 20:55 - 07:13

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: 20:22 - 00:59
• Bogota: 18:25 - 23:38
• Madrid: 21:32 - 01:04

M2 well placed

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: 21:10 - 06:01
• Bogota: 19:20 - 04:22
• Madrid: 22:24 - 06:12

Conjunction of Moon and Venus

Moon and Venus will share the same right ascension, with Moon passing 4º17 to the north of Venus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:24 - 22:02
• Bogota: 18:23 - 20:18
• Madrid: 21:38 - 22:50

Close approach of Moon and Venus

Moon and Venus will make a close approach, passing within 3º53 of each other in the sky.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:24 - 22:02
• Bogota: 18:23 - 20:19
• Madrid: 21:38 - 22:51

Perseid meteor shower 2021

The Perseid meteor shower 2021 will be active from July 17th to August 24, producing its peak rate of meteors around August 12. It will be best seen around the constellation of Perseus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 23:08 - 06:51
• Bogota: 23:11 - 05:31
• Madrid: 8:00 - 21:00

Asteroid Dembowska reaches opposition

Asteroid 349 Dembowska 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 Piscis Austrinus.

Visibility: Visible with a 4 inch telescope

Observing time:

• Mexico City: 22:35 - 05:29
• Bogota: 20:11 - 04:32
• Madrid: 01:46 - 03:32

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: 04:15
• Bogota: 04:15
• Madrid: 11:15

Moon at perihelion

Moon will reach the closest point along its orbit to the Sun, at a distance of 1.0113 AU.

Visibility: Not observable

Conjunction of Moon and Mars

Moon and Mars will share the same right ascension, with Moon passing 4º17 to the north of Mars.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:25 - 21:16
• Bogota: 18:24 - 19:25
• Madrid: not observable

Jupiter reaches opposition

Jupiter 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 Capricornus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: 20:40 - 06:50
• Bogota: 18:42 - 05:27
• Madrid: 21:55 - 06:49

κ-Cygnida meteor shower 2021

The κ-Cygnida meteor shower 2021 will be active from 3 to August 25th, producing its peak rate of meteors around 18. It will be best seen around the constellation of Cygnus.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: all night
• Bogotá: all night
• Madrid: all night

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: 00:08 - 06:24
• Bogota: 00:18 - 05:03
• Madrid: 00:11 - 06:22

Conjunction of Mercury and Mars

Mercury and Mars will share the same right ascension, with Mercury passing 0º04' to the south of Mars.

Visibility: Visible to the naked eye

Observing time:

• Mexico City: not observable
• Bogota: 18:28 - 18:11
• Madrid: not observable

Asteroid Ariadne reaches opposition

Asteroid 43 Ariadne 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: 21:20 - 05:51
• Bogota: 19:22 - 04:20
• Madrid: 22:37 - 05:46

New Moon

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

Visibility: Not observable