September 2021 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

23 sky events total, including 4 moon phases and 2 planetary events.

Daily Sky Events

All times are in local time (Asia/Shanghai)

Group Date Sunrise/Sunset Moonrise/Moonset Moon Phase Sky Events

Planetary outlook

September 2021 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.2
Constellation: Libra
Angular diameter: 7.1"
Status: near superior conjunction

Observation tip: Visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 13h05m55s
Declination: -09°57'34"

Venus

Excellent
Apparent magnitude: -4.1
Constellation: Scorpius
Angular diameter: 16.6"
Status: near greatest western elongation

Observation tip: Very bright, easily visible to the naked eye; Venus is the brightest planet and is best seen at dusk or dawn

Right ascension: 14h08m24s
Declination: -14°08'34"

Mars

Excellent
Apparent magnitude: 1.7
Constellation: Libra
Angular diameter: 3.6"
Status: near western quadrature

Observation tip: Visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 12h01m16s
Declination: +00°45'08"

Jupiter

Excellent
Apparent magnitude: -2.8
Constellation: Aquarius
Angular diameter: 48.0"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its moons are easy to spot and it is excellent for telescope observing

Right ascension: 21h47m14s
Declination: -14°37'10"

Saturn

Excellent
Apparent magnitude: 0.4
Constellation: Aquarius
Angular diameter: 18.1"
Status: near western quadrature

Observation tip: Visible to the naked eye; Saturn’s rings require a telescope to see clearly

Right ascension: 20h40m13s
Declination: -19°12'02"

Uranus

Fair
Apparent magnitude: 5.7
Constellation: Taurus
Angular diameter: 3.7"
Status: near eastern quadrature

Observation tip: Binoculars are recommended; Binoculars or a telescope are recommended

Right ascension: 02h48m45s
Declination: +15°47'27"

Neptune

Fair
Apparent magnitude: 7.7
Constellation: Pisces
Angular diameter: 2.4"
Status: near western quadrature

Observation tip: A telescope is required; A telescope is required; Neptune appears blue-green

Right ascension: 23h31m36s
Declination: -04°20'24"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Capricornus
Angular diameter: 12492.4"
Status: Moon illumination 62.9%

Observation tip: Moon illumination 62.9%; good for observing lunar surface detail

Right ascension: 18h32m13s
Declination: -25°57'35"