April 1990 Himmelsereignisse

Beobachterstandort:Beijing (39.904°, 116.407°)

Monatliche Himmelsereignisse

24 Himmelereignisse insgesamt, einschließlich 4 Mondphasen und 1 Planetenereignisse.

Tägliche Himmelsereignisse

Alle Zeiten in Ortszeit (Asia/Shanghai)

Group Datum Sonnenaufgang/-untergang Mondaufgang/-untergang Mondphase Himmelsereignisse

Planetary outlook

April 1990 mid-month observing conditions

Mercury

Excellent
Scheinbare Helligkeit: 0.3
Sternbild: Taurus
Angular diameter: 8.0"
Status: near superior conjunction

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

Rektaszension: 02h42m56s
Deklination: +18°47'03"

Venus

Excellent
Scheinbare Helligkeit: -4.3
Sternbild: Pisces
Angular diameter: 20.7"
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

Rektaszension: 22h42m30s
Deklination: -08°13'33"

Mars

Excellent
Scheinbare Helligkeit: 0.9
Sternbild: Aquarius
Angular diameter: 5.7"
Status: near eastern quadrature

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

Rektaszension: 21h53m14s
Deklination: -14°17'08"

Jupiter

Excellent
Scheinbare Helligkeit: -2.1
Sternbild: Cancer
Angular diameter: 36.2"
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

Rektaszension: 06h19m31s
Deklination: +23°27'53"

Saturn

Excellent
Scheinbare Helligkeit: 0.5
Sternbild: Capricornus
Angular diameter: 16.7"
Status: near eastern quadrature

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

Rektaszension: 19h47m40s
Deklination: -20°56'49"

Uranus

Fair
Scheinbare Helligkeit: 5.7
Sternbild: Capricornus
Angular diameter: 3.7"
Status: near eastern quadrature

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

Rektaszension: 18h41m49s
Deklination: -23°23'52"

Neptune

Fair
Scheinbare Helligkeit: 7.8
Sternbild: Capricornus
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektaszension: 19h02m53s
Deklination: -21°47'11"

Moon

Excellent
Scheinbare Helligkeit: -12.7
Sternbild: Sagittarius
Angular diameter: 11518.3"
Status: Moon illumination 80.0%

Observation tip: Moon illumination 80.0%; good for observing lunar surface detail

Rektaszension: 17h05m46s
Deklination: -27°01'40"