May 1921 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

18 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 1921 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -1.9
Stjernebillede: Taurus
Angular diameter: 5.2"
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: 03h46m41s
Deklination: +20°46'22"

Venus

Excellent
Tilsyneladende magnitude: -4.7
Stjernebillede: Aries
Angular diameter: 47.2"
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: 01h26m55s
Deklination: +10°12'53"

Mars

Excellent
Tilsyneladende magnitude: 1.5
Stjernebillede: Gemini
Angular diameter: 3.7"
Status: near western quadrature

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

Rektascension: 04h17m03s
Deklination: +21°50'12"

Jupiter

Excellent
Tilsyneladende magnitude: -2.1
Stjernebillede: Virgo
Angular diameter: 38.9"
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: 10h44m35s
Deklination: +09°23'49"

Saturn

Excellent
Tilsyneladende magnitude: 0.9
Stjernebillede: Virgo
Angular diameter: 18.5"
Status: near western quadrature

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

Rektascension: 11h19m27s
Deklination: +06°50'36"

Uranus

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

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

Rektascension: 22h44m32s
Deklination: -08°47'58"

Neptune

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

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

Rektascension: 08h54m19s
Deklination: +17°30'29"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Leo
Angular diameter: 12531.0"
Status: Moon illumination 54.2%

Observation tip: Moon illumination 54.2%; good for observing lunar surface detail

Rektascension: 09h55m42s
Deklination: +07°51'44"