Back to home

Sky Chart For The Month of January, 2021

ASTRONOMICAL BULLETIN FOR JANUARY 2021

 

The Moon

Last Quarter occurs on 6th at h. 15–07 I.S.T 

 New Moon occurs on 13th at h. 10–30 I.S.T

 First Quarter occurs on 21st at h.02–32 I.S.T

 Full Moon occurs on 29th at h.  00–46 I.S.T

 

 

The Lunar Crescent becomes first visible after the New Moon day in the evening of 14th.

The Moon is at Perigee or nearest to the Earth on 9th.The Moon is at Apogee or farthest from the Earth on 21st.

The Moon passes about 1½º south of Venus on 12th, about 3º south of Saturn on 14th, about 3½º south of Jupiter on 14th, about 2½º south of  Mercury on 14th, about 4½º south of Neptune on 17th, about 5º south of Mars on 21st  and about 3½º south of Uranus on 21st.

The Earth

The Earth approaches the Perihelion position in its orbit or reaches nearest to the Sun on 2nd.

The Planets

Visibility of Planets:

Mercury: The planet is too close to the Sun to be visible upto 6th of the month. Thereafter it becomes visible on 7th in the western sky and sets about 1 hour to 1½ hours after sunset upto third quarter of the month and from about 1½ hours to 1 hour after sunset for the remaining days of the month. The planet is in Greatest Eastern Elongation of about 18½° from the Sun on 24th. The planet is at Perihelion or nearest to the Sun in its orbit on 29th.The motion of the planet becomes Retrograde with respect to the Earth from 30th. 

Venus: The planet rises about 1½ hours to 1 hour before sunrise throughout the month. 

Mars: The planet sets about 1 hour to ½ hour after local midnight upto second quarter of the month and about ½ hour after local midnight time to close to it for the remaining days of the month. 

Jupiter: The planet sets about 1½ hours to ½ hour after sunset upto 17th of the month. Thereafter it becomes too close to the Sun to be visible for the remaining days of the month. The planet is in Conjunction with the Sun on 29th. 

Saturn: The planet sets about 1½ hours to 1 hour after sunset upto 9th of the month. Thereafter it becomes too close to the Sun to be visible for the remaining days of the month. The planet is in Conjunction with the Sun on 24th. 

UranusThe planet sets about 1½ hours to 1 hour after local midnight upto first quarter of the month, about 1 hour to ½ hour after it upto second quarter of the month, about ½ hour after local midnight time to close to it upto third quarter of the month and from close to local midnight time to ½ hour before it for the remaining days of the month. The motion of the planet becomes Direct with respect to the Earth from 14th. The planet is in Quadrature with the Sun on 26th. 

Neptune: The planet sets before local midnight throughout the month. It sets about 2 hours to 2½ hours before local midnight upto first quarter of the month, about 2½ hours to 3 hours before it upto third quarter of the month and about 3 hours to 4 hours before it for the remaining days of the month. 

Conjunction of Planets

Mercury passes about 1½0 south of Saturn on 10th.

Mercury passes about 1½0 south of Jupiter on 11th.

Mars passes about 1½0 north of Uranus on 22nd.

 

Planets

Planets in Zodiacal Constellation

Magnitude

Mercury (Budha)

Moves from Sagittarius (Dhanus) to Capricornus (Makara) on 5th and moves from Capricornus (Makara) to Aquarius (Kumbha) on 25th.

–1.0  to 0.0

0.0 to +0.7

Venus (Sukra)

Moves from Scorpion (Vrischika) to Sagittarius (Dhanus) on 4th and

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

    –3.9

Mars (Mangala)

Remains in Aries (Mesha).

–0.3 to 0.0

0.0 to +0.4

Jupiter (Brihaspati)

Remains in Capricornus (Makara).

–2.0 to –1.9

Saturn (Sani)

Remains in Capricornus (Makara).

+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.