May 1999 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

21 himmelbegivenheder i alt, inklusive 4 månefaser og 1 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

May 1999 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -1.1
Stjernebillede: 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

Rektascension: 02h37m46s
Deklination: +13°57'11"

Venus

Excellent
Tilsyneladende magnitude: -4.2
Stjernebillede: 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

Rektascension: 06h31m02s
Deklination: +25°52'15"

Mars

Excellent
Tilsyneladende magnitude: -1.4
Stjernebillede: 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

Rektascension: 13h41m36s
Deklination: -10°01'35"

Jupiter

Excellent
Tilsyneladende magnitude: -2.1
Stjernebillede: 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

Rektascension: 01h20m39s
Deklination: +07°17'52"

Saturn

Excellent
Tilsyneladende magnitude: 0.4
Stjernebillede: 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

Rektascension: 02h29m13s
Deklination: +12°25'07"

Uranus

Fair
Tilsyneladende magnitude: 5.8
Stjernebillede: Aquarius
Angular diameter: 3.6"
Status: near eastern quadrature

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

Rektascension: 21h17m44s
Deklination: -16°26'59"

Neptune

Fair
Tilsyneladende magnitude: 7.8
Stjernebillede: Aquarius
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektascension: 20h26m26s
Deklination: -18°53'28"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Taurus
Angular diameter: 13014.7"
Status: Moon illumination 0.6%

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

Rektascension: 03h02m01s
Deklination: +11°58'07"