May 1990 Himmelshändelser

Observatörens plats:Beijing (39.904°, 116.407°)

Månadsöversikt över himlahändelser

23 himlahändelser totalt, inklusive 5 månfaser och 2 planetära händelser.

Dagliga himlahändelser

Alla tider är i lokal tid (Asia/Shanghai)

Group Datum Soluppgång/Solnedgång Månuppgång/Månnedgång Månfas Himmelshändelser

Planetary outlook

May 1990 mid-month observing conditions

Mercury

Good
Skenbar magnitud: 2.5
Stjärnbild: Taurus
Angular diameter: 11.3"
Status: near greatest eastern elongation

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

Rektascension: 02h26m02s
Deklination: +11°54'41"

Venus

Excellent
Skenbar magnitud: -4.1
Stjärnbild: Aries
Angular diameter: 16.1"
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

Rektascension: 00h47m50s
Deklination: +03°12'01"

Mars

Excellent
Skenbar magnitud: 0.7
Stjärnbild: Pisces
Angular diameter: 6.4"
Status: near eastern quadrature

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

Rektascension: 23h18m25s
Deklination: -06°20'48"

Jupiter

Excellent
Skenbar magnitud: -1.9
Stjärnbild: Cancer
Angular diameter: 33.7"
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: 06h41m09s
Deklination: +23°14'49"

Saturn

Excellent
Skenbar magnitud: 0.4
Stjärnbild: Capricornus
Angular diameter: 17.5"
Status: near eastern quadrature

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

Rektascension: 19h48m44s
Deklination: -20°56'03"

Uranus

Fair
Skenbar magnitud: 5.6
Stjärnbild: Capricornus
Angular diameter: 3.8"
Status: near eastern quadrature

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

Rektascension: 18h40m07s
Deklination: -23°26'13"

Neptune

Fair
Skenbar magnitud: 7.8
Stjärnbild: Capricornus
Angular diameter: 2.3"
Status: near eastern quadrature

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

Rektascension: 19h01m57s
Deklination: -21°48'02"

Moon

Excellent
Skenbar magnitud: -12.7
Stjärnbild: Capricornus
Angular diameter: 11707.7"
Status: Moon illumination 77.2%

Observation tip: Moon illumination 77.2%; good for observing lunar surface detail

Rektascension: 19h31m59s
Deklination: -23°26'49"