January 1987 Himmelbegivenheder

Observatørens placering:Beijing (39.904°, 116.407°)

Månedlig oversigt over himmelbegivenheder

21 himmelbegivenheder i alt, inklusive 4 månefaser og 2 planetariske begivenheder.

Daglige himmelbegivenheder

Alle tider er i lokal tid (Asia/Shanghai)

Group Dato Solopgang/Solnedgang Måneopgang/Månenedgang Månefase Himmelbegivenheder

Planetary outlook

January 1987 mid-month observing conditions

Mercury

Excellent
Tilsyneladende magnitude: -1.4
Stjernebillede: Capricornus
Angular diameter: 4.7"
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: 19h52m31s
Deklination: -23°00'11"

Venus

Excellent
Tilsyneladende magnitude: -4.5
Stjernebillede: Sagittarius
Angular diameter: 25.1"
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: 16h25m01s
Deklination: -17°59'27"

Mars

Excellent
Tilsyneladende magnitude: 0.7
Stjernebillede: Aries
Angular diameter: 6.4"
Status: near western quadrature

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

Rektascension: 00h16m55s
Deklination: +01°38'17"

Jupiter

Excellent
Tilsyneladende magnitude: -2.2
Stjernebillede: Pisces
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

Rektascension: 23h24m46s
Deklination: -05°04'00"

Saturn

Excellent
Tilsyneladende magnitude: 0.5
Stjernebillede: Sagittarius
Angular diameter: 15.4"
Status: near eastern quadrature

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

Rektascension: 17h03m37s
Deklination: -21°18'56"

Uranus

Fair
Tilsyneladende magnitude: 5.7
Stjernebillede: Sagittarius
Angular diameter: 3.5"
Status: near eastern quadrature

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

Rektascension: 17h35m34s
Deklination: -23°26'23"

Neptune

Fair
Tilsyneladende magnitude: 7.9
Stjernebillede: Capricornus
Angular diameter: 2.2"
Status: near eastern quadrature

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

Rektascension: 18h26m50s
Deklination: -22°17'18"

Moon

Excellent
Tilsyneladende magnitude: -12.7
Stjernebillede: Cancer
Angular diameter: 11478.7"
Status: Moon illumination 99.8%

Observation tip: Moon illumination 99.8%; good for observing lunar surface detail

Rektascension: 07h43m37s
Deklination: +26°19'29"