August 1999 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

21 sky events total, including 4 moon phases and 3 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

August 1999 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.1
Constellation: Leo
Angular diameter: 7.4"
Status: near inferior conjunction

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Right ascension: 08h20m03s
Declination: +18°28'48"

Venus

Excellent
Apparent magnitude: -4.0
Constellation: Leo
Angular diameter: 57.0"
Status: near superior 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: 09h59m07s
Declination: +04°22'18"

Mars

Excellent
Apparent magnitude: 0.1
Constellation: Scorpius
Angular diameter: 8.6"
Status: near western quadrature

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

Right ascension: 15h03m26s
Declination: -19°02'47"

Jupiter

Excellent
Apparent magnitude: -2.6
Constellation: Taurus
Angular diameter: 43.2"
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: 02h12m03s
Declination: +11°49'35"

Saturn

Excellent
Apparent magnitude: 0.2
Constellation: Taurus
Angular diameter: 18.3"
Status: near eastern quadrature

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

Right ascension: 03h00m53s
Declination: +14°35'29"

Uranus

Fair
Apparent magnitude: 5.7
Constellation: Aquarius
Angular diameter: 3.7"
Status: near western quadrature

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

Right ascension: 21h08m50s
Declination: -17°09'09"

Neptune

Fair
Apparent magnitude: 7.7
Constellation: Aquarius
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 20h18m39s
Declination: -19°20'28"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Libra
Angular diameter: 11928.3"
Status: Moon illumination 14.2%

Observation tip: Moon illumination 14.2%; good for observing lunar surface detail

Right ascension: 12h27m32s
Declination: +01°36'05"