October 1999 Sky Events

Observer Location:Beijing (39.904°, 116.407°)

Monthly Sky Events Overview

22 sky events total, including 5 moon phases and 3 planetary events.

Daily Sky Events

All times are in local time (Asia/Shanghai)

Group Date Sunrise/Sunset Moonrise/Moonset Moon Phase Sky Events

Planetary outlook

October 1999 mid-month observing conditions

Mercury

Excellent
Apparent magnitude: -0.2
Constellation: Scorpius
Angular diameter: 5.7"
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

Right ascension: 14h41m46s
Declination: -17°57'30"

Venus

Excellent
Apparent magnitude: -4.7
Constellation: Virgo
Angular diameter: 29.2"
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

Right ascension: 10h27m58s
Declination: +07°56'54"

Mars

Excellent
Apparent magnitude: 0.6
Constellation: Sagittarius
Angular diameter: 6.5"
Status: near western quadrature

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

Right ascension: 17h53m25s
Declination: -25°12'18"

Jupiter

Excellent
Apparent magnitude: -2.9
Constellation: Aries
Angular diameter: 49.6"
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

Right ascension: 01h58m03s
Declination: +10°24'40"

Saturn

Excellent
Apparent magnitude: -0.1
Constellation: Taurus
Angular diameter: 20.1"
Status: near eastern quadrature

Observation tip: Very bright, easily visible to the naked eye; Saturn’s rings require a telescope to see clearly

Right ascension: 02h55m01s
Declination: +13°58'05"

Uranus

Fair
Apparent magnitude: 5.8
Constellation: Aquarius
Angular diameter: 3.6"
Status: near western quadrature

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

Right ascension: 21h02m14s
Declination: -17°36'26"

Neptune

Fair
Apparent magnitude: 7.8
Constellation: Aquarius
Angular diameter: 2.3"
Status: near western quadrature

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

Right ascension: 20h15m04s
Declination: -19°33'12"

Moon

Excellent
Apparent magnitude: -12.7
Constellation: Sagittarius
Angular diameter: 11482.3"
Status: Moon illumination 26.2%

Observation tip: Moon illumination 26.2%; good for observing lunar surface detail

Right ascension: 17h28m35s
Declination: -19°31'10"