May 2017 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

20 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 2017 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: 0.6
Stjernebillede: Aries
Angular diameter: 8.7"
Status: near greatest eastern elongation

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

Rektascension: 01h52m37s
Deklination: +08°03'17"

Venus

Excellent
Tilsyneladende magnitude: -4.6
Stjernebillede: Aries
Angular diameter: 30.6"
Status: near greatest eastern 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: 00h38m39s
Deklination: +03°23'20"

Mars

Excellent
Tilsyneladende magnitude: 1.6
Stjernebillede: Gemini
Angular diameter: 3.8"
Status: near western quadrature

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

Rektascension: 04h59m23s
Deklination: +23°28'12"

Jupiter

Excellent
Tilsyneladende magnitude: -2.4
Stjernebillede: Libra
Angular diameter: 42.5"
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: 12h54m34s
Deklination: -04°12'18"

Saturn

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

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

Rektascension: 17h45m29s
Deklination: -22°01'18"

Uranus

Fair
Tilsyneladende magnitude: 5.9
Stjernebillede: Aries
Angular diameter: 3.4"
Status: near eastern quadrature

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

Rektascension: 01h37m53s
Deklination: +09°34'46"

Neptune

Fair
Tilsyneladende magnitude: 7.8
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: 23h02m19s
Deklination: -07°06'48"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Capricornus
Angular diameter: 11509.1"
Status: Moon illumination 85.5%

Observation tip: Moon illumination 85.5%; good for observing lunar surface detail

Rektascension: 18h38m29s
Deklination: -19°17'38"