September 1917 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

24 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

September 1917 mid-month observing conditions

Mercury

Good
Tilsyneladende magnitude: 3.5
Stjernebillede: Virgo
Angular diameter: 10.4"
Status: near superior conjunction

Observation tip: Binoculars are recommended; Mercury stays close to the Sun; best seen at dusk or dawn

Rektascension: 11h52m08s
Deklination: -03°23'00"

Venus

Excellent
Tilsyneladende magnitude: -3.9
Stjernebillede: Libra
Angular diameter: 13.7"
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: 13h44m14s
Deklination: -11°05'00"

Mars

Excellent
Tilsyneladende magnitude: 1.5
Stjernebillede: Leo
Angular diameter: 4.6"
Status: near eastern quadrature

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

Rektascension: 08h16m15s
Deklination: +20°47'02"

Jupiter

Excellent
Tilsyneladende magnitude: -2.4
Stjernebillede: Gemini
Angular diameter: 41.6"
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: 04h38m43s
Deklination: +21°14'23"

Saturn

Excellent
Tilsyneladende magnitude: 0.4
Stjernebillede: Leo
Angular diameter: 16.9"
Status: near eastern quadrature

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

Rektascension: 08h51m09s
Deklination: +18°11'52"

Uranus

Fair
Tilsyneladende magnitude: 5.8
Stjernebillede: Aquarius
Angular diameter: 3.7"
Status: near western quadrature

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

Rektascension: 21h32m56s
Deklination: -15°20'47"

Neptune

Fair
Tilsyneladende magnitude: 7.9
Stjernebillede: Leo
Angular diameter: 2.2"
Status: near eastern quadrature

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

Rektascension: 08h34m25s
Deklination: +18°32'21"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Virgo
Angular diameter: 11449.3"
Status: Moon illumination 2.0%

Observation tip: Moon illumination 2.0%; good for observing lunar surface detail

Rektascension: 10h24m28s
Deklination: +05°23'18"