December 2018 Dangaus reiškiniai

Stebėtojo vieta:Beijing (39.904°, 116.407°)

Mėnesio dangaus reiškinių apžvalga

19 astronominių įvykių iš viso, įskaitant 4 Mėnulio fazes ir 1 planetinius įvykius.

Dienos dangaus reiškiniai

Visi laikai nurodyti vietos laiku (Asia/Shanghai)

Group Data Saulėtekis/Saulėlydis Mėnulio patekėjimas/leidimasis Mėnulio fazė Dangaus reiškiniai

Planetary outlook

December 2018 mid-month observing conditions

Mercury

Excellent
Regimasis ryškis: -0.3
Žvaigždynas: Sagittarius
Angular diameter: 6.7"
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

Rektascensija: 16h00m44s
Deklinacija: -18°16'18"

Venus

Excellent
Regimasis ryškis: -4.8
Žvaigždynas: Scorpius
Angular diameter: 32.9"
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

Rektascensija: 14h27m23s
Deklinacija: -11°35'54"

Mars

Excellent
Regimasis ryškis: 0.2
Žvaigždynas: Pisces
Angular diameter: 8.4"
Status: near western quadrature

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

Rektascensija: 23h19m13s
Deklinacija: -05°10'43"

Jupiter

Excellent
Regimasis ryškis: -1.8
Žvaigždynas: Sagittarius
Angular diameter: 31.3"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Its moons are easy to spot and it is excellent for telescope observing

Rektascensija: 16h25m48s
Deklinacija: -21°01'27"

Saturn

Excellent
Regimasis ryškis: 0.6
Žvaigždynas: Capricornus
Angular diameter: 15.1"
Status: near western quadrature

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

Rektascensija: 18h40m42s
Deklinacija: -22°35'58"

Uranus

Fair
Regimasis ryškis: 5.8
Žvaigždynas: Aries
Angular diameter: 3.7"
Status: near western quadrature

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

Rektascensija: 01h47m56s
Deklinacija: +10°32'48"

Neptune

Fair
Regimasis ryškis: 7.8
Žvaigždynas: Pisces
Angular diameter: 2.3"
Status: near western quadrature

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

Rektascensija: 23h01m50s
Deklinacija: -07°16'08"

Moon

Excellent
Regimasis ryškis: -12.7
Žvaigždynas: Pisces
Angular diameter: 11588.3"
Status: Moon illumination 45.4%

Observation tip: Moon illumination 45.4%; good for observing lunar surface detail

Rektascensija: 23h20m22s
Deklinacija: -08°38'05"