October 1917 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

October 1917 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -1.1
Stjernebillede: Libra
Angular diameter: 5.5"
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: 12h31m03s
Deklination: -01°13'34"

Venus

Excellent
Tilsyneladende magnitude: -4.1
Stjernebillede: Sagittarius
Angular diameter: 16.5"
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: 16h04m18s
Deklination: -22°50'08"

Mars

Excellent
Tilsyneladende magnitude: 1.3
Stjernebillede: Leo
Angular diameter: 5.1"
Status: near eastern quadrature

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

Rektascension: 09h29m53s
Deklination: +16°15'12"

Jupiter

Excellent
Tilsyneladende magnitude: -2.7
Stjernebillede: Gemini
Angular diameter: 45.5"
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: 04h39m00s
Deklination: +21°13'06"

Saturn

Excellent
Tilsyneladende magnitude: 0.4
Stjernebillede: Leo
Angular diameter: 17.6"
Status: near eastern quadrature

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

Rektascension: 09h02m19s
Deklination: +17°30'02"

Uranus

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

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

Rektascension: 21h30m11s
Deklination: -15°33'22"

Neptune

Fair
Tilsyneladende magnitude: 7.9
Stjernebillede: Leo
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektascension: 08h37m04s
Deklination: +18°22'46"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Libra
Angular diameter: 11574.9"
Status: Moon illumination 1.4%

Observation tip: Moon illumination 1.4%; good for observing lunar surface detail

Rektascension: 12h23m34s
Deklination: -07°59'43"