Astronomy - September 2015

(Nandana) #1
This map unfolds the entire night sky from sunset (at right) until sunrise (at left).
Arrows and colored dots show motions and locations of solar system objects during the month.

The planets
in their orbits
Arrows show the inner planets’
monthly motions and dots depict
the outer planets’ positions at mid-
month from high above their orbits.

Jupiter’s moons


Io
Europa

S
WE
N

Ganymede
Callisto

ILLUSTRATIONS BY

ASTRONOMY

: ROEN KELLY

COM

BOÖ

SER

VIR
LIB

LUP
SCO

ARA

TEL

SGR

SCT

AQL SER OPH

HER

DRA

LY R

CYG

VUL

SGE

DEL


CAP

ANT
CEN

CRV

CRT HYA

SEX

LEO

CVn UMa

CrA

LMi

CrB

Objects visible in the evening

Sun

Early evening

Pluto
Saturn

Ceres

Mercury

A partial solar eclipse occurs
September 13 across parts of
southern Africa and Antarctica

24 23 22 21 20 19 18 17 16 15 14 13 12

1 2 3 4 5 6 7 8 9

10

11
12

13
14

15
16

17
18

19
20

21
22
23

24
25

26
27

28
29

30

Callisto

Europa

Io

Ganymede

Jupiter

Mercury
Greatest eastern elongation
is September 4

Ceres

Mars

Uranus

Neptune
Saturn

Pluto

Venus

Jupiter

Jupiter

Earth
Autumnal equinox
is September 23

WWW.ASTRONOMY.COM 41

Dots display positions
of Galilean satellites at
7 A.M. EDT on the date
shown. South is at the
top to match
the view
through a
telescope.

To locate the Moon in the sky, draw a line from the phase shown for the day straight up to the curved blue line.
Note: Moons vary in size due to the distance from Earth and are shown at 0h Universal Time.

The planets
in their orbits
Arrows show the inner planets’
monthly motions and dots depict
the outer planets’ positions at mid-
month from high above their orbits.
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