Sky Chart For The Month of January, 2018

ASTRONOMICAL BULLETIN FOR JANUARY 2018

 

The Moon

Full Moon occurs on 2nd at h. 7-54 I.S.T.

Last Quarter occurs on 9th at h. 3-55 I.S.T.

New Moon occurs on 17th at h. 7-47 I.S.T.

First Quarter occurs on 25th at h. 3-50 I.S.T.

Full Moon occurs on 31st  at h. 18-57 I.S.T.

 

The Lunar Crescent becomes first visible after the New Moon day in the evening of 18th.

The Moon is at Perigee or nearest to the Earth on 2nd and 30th and at apogee or farthest from the Earth on 15th.

The Moon passes about 4½ º north of Jupiter and about 4½ º north of Mars on 11th, about 2½ º north of Saturn and about 3½ º north of Mercury on 15th, 2½ º north of Venus on 17th, about 1½ º south of Neptune on 21st  and about 4½ º south of Uranus on 24th.

 

Eclipse

 

Total Eclipse of the Moon: The phenomenon will occur on 31st January 2018. The eclipse begins at h.17-18 I.S.T. and ends at h.20-42 I.S.T. The eclipse will be visible in India.

 

The Earth

 

The Earth approaches the Perihelion position in its orbit or reaches nearest to the Sun on 3rd.

 

The Planets

 

Visibility of Planets:

Mercury: The planet is visible in the eastern sky before sunrise and rises about 1½ hours to ½ hour before it upto 28th of the month. Thereafter it becomes too close to the Sun to be visible for the remaining days of the month. It is in Greatest Western Elongation of about 23 º from the Sun on 2nd. The planet is in Aphelion position or farthest from the Sun on 25th.

Venus:  The planet is too close to the Sun to be visible throughout the month.

Mars: The planet rises after local midnight and remains visible till the beginning of morning twilight throughout the month. It rises about 2 hours to 1½ hours after it during the period.

Jupiter: The planet rises after local midnight 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 hours after it upto second quarter of the month, about 1½ hours to 1 hour after it upto third quarter of the month and about 1 hour to ½ hour after it for the remaining days of the month.

Saturn: The planet is too close to the Sun to be visible in the beginning of the month. Thereafter from 5th of the month, it becomes visible in the eastern sky and rises about 1 hour to 1½ hours before sunrise upto second quarter of the month, about 1½ hours to 2 hours before it upto third quarter of the month and about 2 hours to 2½ hours before it for the remaining days of the month.      

Uranus: The planet sets about 1 hour to ½ hours after local midnight upto second quarter of the month, about ½ hour after to ½ hour before it upto third quarter of the month and about ½ hour to 1½ hours before it for the remaining days of the month. The motion of the planet becomes Direct with respect to the Earth from 2nd. The planet is in Quadrature with the Sun on 15th.                         

Neptune: The planet sets after sunset throughout the month. It sets about 4½ hours to 4 hours after it upto first quarter of the month, about 4 hours to 3½ hours after it upto second quarter of the month, about 3½ hours to 3 hours after it upto third quarter of the month and about 3 hours to 2½ hours after it for the remaining days of the month.

 

Conjunction of Planets

Mars passes very close to Jupiter on 7th.

Mercury passes close to Saturn on 13th.

 

Planets

Planets in Zodiacal Constellation

Magnitude

Mercury (Budha)

Moves from Scorpion (Vrischika) to Sagittarius (Dhanus) on 6th.

Moves from Sagittarius (Dhanus) to Capricornus (Makara) on 28th.

-0.4 to -0.3

-0.3 to -0.6

Venus (Sukra)

Moves from Sagittarius (Dhanus) to Capricornus (Makara) on 13th.

-4.0 to -3.9

Mars (Mangala)

Moves from Libra (Tula)  to Scorpion (Vrischika) on 17th

+1.5 to +1.2

Jupiter (Brihaspati)

Remains in Libra (Tula).  

-1.8 to -2.0

Saturn (Sani)

Remains in Sagittarius (Dhanus).

+0.5 to +0.6

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.