September 1977 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

19 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 1977 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: 1.0
Constellation: Virgo
Angular diameter: 8.6"
Status: near greatest eastern elongation

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

Right ascension: 10h33m25s
Declination: +08°08'34"

Venus

Excellent
Apparent magnitude: -3.9
Constellation: Leo
Angular diameter: 12.3"
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: 09h33m20s
Declination: +15°05'40"

Mars

Excellent
Apparent magnitude: 0.7
Constellation: Cancer
Angular diameter: 6.6"
Status: near eastern quadrature

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

Right ascension: 06h36m48s
Declination: +23°28'00"

Jupiter

Excellent
Apparent magnitude: -2.2
Constellation: Cancer
Angular diameter: 37.9"
Status: near eastern 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: 06h16m06s
Declination: +23°00'02"

Saturn

Excellent
Apparent magnitude: 0.6
Constellation: Leo
Angular diameter: 16.5"
Status: near eastern quadrature

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

Right ascension: 09h48m35s
Declination: +14°22'10"

Uranus

Fair
Apparent magnitude: 5.6
Constellation: Scorpius
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 14h27m47s
Declination: -14°11'03"

Neptune

Fair
Apparent magnitude: 7.9
Constellation: Sagittarius
Angular diameter: 2.2"
Status: near western quadrature

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

Right ascension: 16h49m07s
Declination: -20°57'49"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 12454.1"
Status: Moon illumination 3.2%

Observation tip: Moon illumination 3.2%; good for observing lunar surface detail

Right ascension: 12h46m00s
Declination: -05°12'32"