Astronomy

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10 11 12 13 14 15 16

17 18 19 20 21 22 23

24 25 26 27 28 29 30

SUN. MON. TUES. WED. THURS. FRI. SAT.

SCORPIUS

VIRGO

LIBRA

SERPENS

CAUDA

OPHIUCHUS

LUPUS

SERPENSCAPUT

BOÖTES

COMABERENICES

CANES

VENATICI

CORONABOREALIS

URSA MAJOR

HERCULES

Antares M4
M6
7

M5

Arcturus

M51

Mizar

M13

NGC

6231

Saturn

WWW.ASTRONOMY.COM 39

Open cluster

Globular cluster

Diffuse nebula

Planetary nebula

Galaxy

W

NW

SW

MAP SYMBOLS

Note: Moon phases in the calendar vary

in size due to the distance from Earth

SEPTEMBER 2017 and are shown at 0h Universal Time.

Calendar of events

4 Mercury is stationary,

noon EDT

5 Neptune is at opposition,

1 A.M. EDT

Jupiter passes 3° north of

Spica, 7 A.M. EDT

6 The Moon passes 0.8° south of

Neptune, 1 A.M. EDT

Full Moon occurs at

3:03 A.M. EDT

8 Asteroid Julia is at opposition,

5 P.M. EDT

9 The Moon passes 4° south of

Uranus, 6 A.M. EDT

10 Mercury passes 0.6° south of

Regulus, 8 A.M. EDT

12 Mercury is at greatest western

elongation (18°), 6 A.M. EDT

The Moon passes 0.4° north of

Aldebaran, 9 A.M. EDT

13 Last Quarter Moon

occurs at 2:25 A.M. EDT

The Moon is at perigee

(229,820 miles from Earth),

12: 0 6 P.M. EDT

SPECIAL OBSERVING DATE

12 Mercury climbs highest

before dawn as it puts

on its best morning

show of the year.

16 Mercury passes 0.06° north of

Mars, 2 P.M. EDT

17 The Moon passes 0.5° south of

Venus, 9 P.M. EDT

18 The Moon passes 0.09° north

of Regulus, 1 A.M. EDT

The Moon passes 0.1° north of

Mars, 4 P.M. EDT

The Moon passes 0.03° south

of Mercury, 7 P.M. EDT

19 Venus passes 0.5° north of

Regulus, 7 P.M. EDT

20 New Moon occurs at

1:30 A.M. EDT

22 The Moon passes 4° north of

Jupiter, 4 A.M. EDT

Autumnal equinox occurs at

4:02 P.M. EDT

25 Asteroid Pallas is stationary,

7 A.M. EDT

26 The Moon passes 3° north of

Saturn, 8 P.M. EDT

27 The Moon is at apogee

(251,250 miles from Earth),

2:50 A.M. EDT

Asteroid Vesta is in

conjunction with the Sun,

10 A.M. EDT

First Quarter Moon

occurs at 10:54 P.M. EDT

28 Pluto is stationary, 4 A.M. EDT

ILLUSTRATIONS BY

ASTRONOMY

: ROEN KELLY

BEGINNERS: WATCH A VIDEO ABOUT HOW TO READ A STAR CHART AT http://www.Astronomy.com/starchart.