December 1987 Himmelsereignisse

Beobachterstandort:Beijing (39.904°, 116.407°)

Monatliche Himmelsereignisse

26 Himmelereignisse insgesamt, einschließlich 4 Mondphasen und 4 Planetenereignisse.

Tägliche Himmelsereignisse

Alle Zeiten in Ortszeit (Asia/Shanghai)

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

Planetary outlook

December 1987 mid-month observing conditions

Mercury

Excellent
Scheinbare Helligkeit: -1.0
Sternbild: Sagittarius
Angular diameter: 4.7"
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

Rektaszension: 17h06m46s
Deklination: -23°39'09"

Venus

Excellent
Scheinbare Helligkeit: -3.9
Sternbild: Capricornus
Angular diameter: 11.8"
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

Rektaszension: 19h31m56s
Deklination: -23°27'43"

Mars

Excellent
Scheinbare Helligkeit: 1.7
Sternbild: Scorpius
Angular diameter: 4.1"
Status: near eastern quadrature

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

Rektaszension: 14h45m41s
Deklination: -15°21'12"

Jupiter

Excellent
Scheinbare Helligkeit: -2.6
Sternbild: Aries
Angular diameter: 44.5"
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

Rektaszension: 01h15m04s
Deklination: +06°27'22"

Saturn

Excellent
Scheinbare Helligkeit: 0.4
Sternbild: Sagittarius
Angular diameter: 15.1"
Status: near western quadrature

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

Rektaszension: 17h31m46s
Deklination: -22°09'03"

Uranus

Fair
Scheinbare Helligkeit: 5.8
Sternbild: Sagittarius
Angular diameter: 3.5"
Status: near western quadrature

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

Rektaszension: 17h45m19s
Deklination: -23°33'51"

Neptune

Fair
Scheinbare Helligkeit: 7.9
Sternbild: Capricornus
Angular diameter: 2.2"
Status: near western quadrature

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

Rektaszension: 18h30m54s
Deklination: -22°17'26"

Moon

Excellent
Scheinbare Helligkeit: -12.7
Sternbild: Libra
Angular diameter: 11827.3"
Status: Moon illumination 35.5%

Observation tip: Moon illumination 35.5%; good for observing lunar surface detail

Rektaszension: 12h33m05s
Deklination: -04°37'16"