September 2100 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

24 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 2100 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 0.3
Constellation: Libra
Angular diameter: 7.2"
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: 13h05m39s
Declination: -09°58'53"

Venus

Excellent
Apparent magnitude: -4.0
Constellation: Leo
Angular diameter: 14.9"
Status: near inferior conjunction

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: 09h02m13s
Declination: +16°38'12"

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: 12h04m37s
Declination: +00°22'37"

Jupiter

Excellent
Apparent magnitude: -1.7
Constellation: Libra
Angular diameter: 31.5"
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: 13h33m16s
Declination: -08°35'14"

Saturn

Excellent
Apparent magnitude: 0.8
Constellation: Libra
Angular diameter: 15.7"
Status: near western quadrature

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

Right ascension: 13h36m24s
Declination: -07°35'10"

Uranus

Fair
Apparent magnitude: 5.8
Constellation: Aries
Angular diameter: 3.7"
Status: near eastern quadrature

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

Right ascension: 01h33m10s
Declination: +09°02'54"

Neptune

Fair
Apparent magnitude: 7.9
Constellation: Virgo
Angular diameter: 2.2"
Status: near eastern quadrature

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

Right ascension: 11h14m40s
Declination: +05°54'28"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Aquarius
Angular diameter: 12010.0"
Status: Moon illumination 88.1%

Observation tip: Moon illumination 88.1%; good for observing lunar surface detail

Right ascension: 21h00m04s
Declination: -19°28'54"