July 2017 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

24 himmelbegivenheder i alt, inklusive 5 månefaser og 2 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

July 2017 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -0.2
Stjernebillede: Leo
Angular diameter: 6.1"
Status: near greatest western elongation

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

Rektascension: 09h12m06s
Deklination: +17°22'47"

Venus

Excellent
Tilsyneladende magnitude: -4.1
Stjernebillede: Gemini
Angular diameter: 16.3"
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

Rektascension: 04h39m26s
Deklination: +19°48'21"

Mars

Excellent
Tilsyneladende magnitude: 1.6
Stjernebillede: Cancer
Angular diameter: 3.5"
Status: near western quadrature

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

Rektascension: 07h54m40s
Deklination: +21°54'30"

Jupiter

Excellent
Tilsyneladende magnitude: -1.9
Stjernebillede: Libra
Angular diameter: 35.9"
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

Rektascension: 12h57m13s
Deklination: -04°45'36"

Saturn

Excellent
Tilsyneladende magnitude: 0.2
Stjernebillede: Sagittarius
Angular diameter: 18.1"
Status: near western quadrature

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

Rektascension: 17h27m33s
Deklination: -21°55'32"

Uranus

Fair
Tilsyneladende magnitude: 5.9
Stjernebillede: Aries
Angular diameter: 3.5"
Status: near eastern quadrature

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

Rektascension: 01h46m17s
Deklination: +10°21'19"

Neptune

Fair
Tilsyneladende magnitude: 7.7
Stjernebillede: Pisces
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektascension: 23h02m39s
Deklination: -07°07'18"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Aries
Angular diameter: 12135.7"
Status: Moon illumination 69.3%

Observation tip: Moon illumination 69.3%; good for observing lunar surface detail

Rektascension: 00h05m06s
Deklination: -02°45'37"