May 1999 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

21 sky events total, including 4 moon phases and 1 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

May 1999 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -1.1
Constellation: Taurus
Angular diameter: 5.3"
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: 02h37m46s
Declination: +13°57'11"

Venus

Excellent
Apparent magnitude: -4.2
Constellation: Cancer
Angular diameter: 18.0"
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: 06h31m02s
Declination: +25°52'15"

Mars

Excellent
Apparent magnitude: -1.4
Constellation: Libra
Angular diameter: 15.7"
Status: near western quadrature

Observation tip: Very bright, easily visible to the naked eye; Its reddish appearance is obvious; it is best observed near opposition

Right ascension: 13h41m36s
Declination: -10°01'35"

Jupiter

Excellent
Apparent magnitude: -2.1
Constellation: Aries
Angular diameter: 34.1"
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: 01h20m39s
Declination: +07°17'52"

Saturn

Excellent
Apparent magnitude: 0.4
Constellation: Taurus
Angular diameter: 16.3"
Status: near eastern quadrature

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

Right ascension: 02h29m13s
Declination: +12°25'07"

Uranus

Fair
Apparent magnitude: 5.8
Constellation: Aquarius
Angular diameter: 3.6"
Status: near eastern quadrature

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

Right ascension: 21h17m44s
Declination: -16°26'59"

Neptune

Fair
Apparent magnitude: 7.8
Constellation: Aquarius
Angular diameter: 2.3"
Status: near eastern quadrature

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

Right ascension: 20h26m26s
Declination: -18°53'28"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Taurus
Angular diameter: 13014.7"
Status: Moon illumination 0.6%

Observation tip: Moon illumination 0.6%; good for observing lunar surface detail

Right ascension: 03h02m01s
Declination: +11°58'07"