Sky Chart For The Month of September, 2017

ASTRONOMICAL BULLETIN FOR SEPTEMBER 2017

The Moon

Full Moon occurs on 6^th at h. 12-33 I.S.T	Last Quarter occurs on 13^th h. 11-55 I.S.T.
New Moon occurs on 20^th at h. 11-00 I.S.T.	First Quarter occurs on 28^th h 8-24 I.S.T.

The Lunar Crescent becomes first visible after the New Moon day in the evening of 21^st.
The Moon is at Perigee or nearest to the Earth on 13^th and at Apogee or farthest from the Earth on 27^th.

The Moon passes about 1° south of Neptune on 6^th, about 4½° south of Uranus on 9^th, about ½ ° south of Venus on 18^th, very close to Mars and Mercury on 19^th, about 3½° north of Jupiter on 22^ndand about 3½° north of Saturn on 27^th.

The Earth

The Earth is at Autumnal Equinox on 23^rd.

The Planets

Visibility of Planets:

Mercury: The planet is too close to the Sun to be visible upto 1^st of the month. Thereafter it reappears in the eastern sky before sunrise on 2^nd and remains visible till the beginning of morning twilight upto 26^th of the month. It rises about ½ hour to 1 hour before sunrise during the period. Thereafter the planet is too close to the Sun to be visible for the remaining days of the month. The motion of the planet becomes Direct with respect to the Earth from 5^th. It is in Greatest Western Elongation of about 18º from the Sun on 12^th. The planet is in Perihelion or nearest to the Sun on 15^th.

Venus: The planet is a brilliant object visible in the eastern sky. It rises before sunrise and remains visible till the beginning of morning twilight throughout the month. It rises about 2½ hours to 2 hours before sunrise during the period.

Mars: The planet is too close to the Sun to be visible upto 8^th of the month. Thereafter it reappears in the eastern sky before sunrise and rises about 1 hour to 1½ hours before it during the period.

Jupiter: The planet is visible in the western sky after sunset and sets about 2 hours to 1½ hours after it upto second quarter of the month and about 1½ hour to 1 hour after it for the remaining days of the month.

Saturn: The planet sets before local midnight throughout the month. It sets about ½ hour to 1 hour before it upto first quarter of the month ,about 1 hour to 1½ hours before it upto third quarter of the month, about 1½ hours to 2 hours before it for the remaining days of the month.

Uranus: The planet rises after sunet and remains visible till the beginning of morning twilight throughout the month. It rises about 2½ hours to 2 hours after it upto first quarter of the month, about 2 hours to 1½ hour after it upto third quarter of the month and about 1½ hours to 1 hour after it for the remaining days of the month.

Neptune: The planet sets around sunrise time to one hour before it upto third quarter of the month and about 1 hour to 1½ hours before it for the remaining days of the month . The planet is in Opposition with respect to the Sun on 5^th.

Conjunction of Planets:

Mars passes about 1 º north of Regulus (Magha) on 5^th

Jupiter passes about 3 ½ ºnorth of Spica(Chitra) on 5^th.

Mercury passes about ½ º south of Regulus (Magha) on 10^th.

Mercury passes very close to Mars on 16^th.

Venus passes about ½ º north of Regulus (Magha) on 20^th.

Planets	Planets in Zodiacal Constellation	Magnitude
Mercury (Budha)	Moves from Leo (Simha) to Virgo (Kanya) on 27^th.	+4.3 to 0.0 0.0 to -1.3
Venus (Sukra)	Moves from Cancer (Karkata) to Leo (Simha) on 15^th.	-3.8 to -3.9
Mars (Mangala)	Remains in Leo (Simha).	+1.8
Jupiter (Brihaspati)	Moves from Virgo (Kanya) to Libra (Tula) on 12^th..	-1.7
Saturn (Sani)	Remains in Scorpion (Vrischika).	+0.4 to +0.5
Uranus	Remains in Aries (Mesha).	+6.0
Neptune	Remains in Aquarius (Kumbha).	+8.0

Source : : Director

Positional Astronomy Centre

India Meteorological Department

Salt Lake, Kolkata - 700 091.