December 1998 Astronomické jevy

Poloha pozorovatele:Beijing (39.904°, 116.407°)

Přehled měsíčních nebeských úkazů

24 celkem nebeských úkazů, včetně 4 fáze Měsíce a 2 planetární jevy.

Denní nebeské úkazy

Všechny časy jsou v místním čase (Asia/Shanghai)

Group Datum Východ/západ Slunce Východ/západ Měsíce Fáze Měsíce Astronomické jevy

Planetary outlook

December 1998 mid-month observing conditions

Mercury

Excellent
Zdánlivá magnituda: -0.1
Souhvězdí: Sagittarius
Angular diameter: 7.5"
Status: near greatest eastern elongation

Observation tip: Very bright, easily visible to the naked eye; Mercury stays close to the Sun; best seen at dusk or dawn

Rektascenze: 16h03m25s
Deklinace: -18°01'13"

Venus

Excellent
Zdánlivá magnituda: -3.9
Souhvězdí: Capricornus
Angular diameter: 10.0"
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

Rektascenze: 18h17m45s
Deklinace: -24°10'33"

Mars

Excellent
Zdánlivá magnituda: 1.2
Souhvězdí: Libra
Angular diameter: 5.6"
Status: near eastern quadrature

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

Rektascenze: 12h38m12s
Deklinace: -02°10'07"

Jupiter

Excellent
Zdánlivá magnituda: -2.4
Souhvězdí: Pisces
Angular diameter: 40.1"
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

Rektascenze: 23h24m36s
Deklinace: -05°13'43"

Saturn

Excellent
Zdánlivá magnituda: 0.3
Souhvězdí: Aries
Angular diameter: 19.1"
Status: near western quadrature

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

Rektascenze: 01h43m54s
Deklinace: +07°56'25"

Uranus

Fair
Zdánlivá magnituda: 5.9
Souhvězdí: Aquarius
Angular diameter: 3.4"
Status: near western quadrature

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

Rektascenze: 20h51m03s
Deklinace: -18°18'53"

Neptune

Fair
Zdánlivá magnituda: 7.9
Souhvězdí: Aquarius
Angular diameter: 2.2"
Status: near western quadrature

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

Rektascenze: 20h10m27s
Deklinace: -19°44'56"

Moon

Excellent
Zdánlivá magnituda: -12.7
Souhvězdí: Scorpius
Angular diameter: 11468.2"
Status: Moon illumination 14.0%

Observation tip: Moon illumination 14.0%; good for observing lunar surface detail

Rektascenze: 14h33m41s
Deklinace: -09°56'09"