Sky and Telescope - January 2017 - SGA17SAL

A
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9

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Sun
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Equation
of time
12

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27
6
13

27
3

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Greatest illuminated extent

9
Opposition

10

11
New
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Midnight
First
Quarter

Full
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1

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24

Greatest
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25

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7

18

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Dec 9
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Nov 30

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4

Computed by
Roger W. Sinnott,
Sky & Telescope Magazine
© 2017 F+W Media, Inc.

®

sk yandtelescope.com

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11
18
25

BER
DECEM

Sm

R

a
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A

ts

Sep 23

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Sep 20

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Sep 17

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of

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22

Set

3

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26

Sunrise

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5
day 2,4
Julian

8,000+

Aug 8

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pi

966

21

ilight

Jul 1
Jul 4

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20

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ening tw
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Jun 4

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se
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s

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19

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May 18

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Feb 11

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16

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15

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JUNE

25

Earth is
147,100,998 km
2
M
er
from the Sun
cu
(perihelion) at 12
ry
9
a.m. EST
16
Mercury reaches
greatest
23
elongation, 24°
west of the Sun
30
Moon is deep inside
Earth's penumbra
6
shortly before 1h UT
for Africa (but not
13
Australia), and early
evening (of the 10th)
20
for South America
Mercury is 26° west of
27
the Sun
Venus is at greatest
3
elongation, 46° west of
the Sun
10
Latest sunrise
17
Earth is 152,092,504 km
from the Sun (aphelion) at
24
6 a.m. EST; latest onset of
morning twilight
1
A slight partial lunar eclipse
for Australia from 3:22 to
8
5:19 a.m. EST, and early
evening of August 7th in
15
southern Africa
Mercury stands 18° west of
22
the Sun
Mars is 0.1° above Mercury at
29
dawn, but very low (use a
5
telescope)
Regulus is 0.6° right of Venus this
12
morning
Spring begins at the equinox, 6:02
19
a.m. EST
Mars is just 0.2° above Venus
26
Spica is 3.1° upper right of Mars this
morning and tomorrow
3
Earliest sunrise
10
Earliest morning twilight
Summer begins at the solstice, 2:28
17
a.m. EST

a
Tr
ri

8

c
er

Jan 5

18

rn

1

Eta
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s
Rise
Venus

MORNING SKY

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at

a
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ts

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Dec 22

15

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ns

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Nov 24

24

twilight

Oct 19

14

End of evening

Sep 11

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13

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J A N U A RY

Set

of

Jul 30
Aug 21

5 a.m.

Start

Jul 27

4

s
se
Ri

Apr 1
Apr 7
Jun 8
Jun 10
Jun 15
Jun 21

3

MARC

7

t

si
8
Neptune is just 0.2° north of Mars
s
it
an
ns
Tr
Latest twilight of year, latitude 30° south
a
s
s
15
Tr i t s
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de
Latest sunset
ia
ns
na
i
s
e
l
u Tr a
Venus stands 47° east of the Sun;
m
P
22
p
ul
o us
Neptune is 0.5° southwest of Venus
C
i
an
C
C Sir
es
M
Annular solar eclipse in a narrow path
29
is
L
R
across southern South America (late
Set
s
morning) and Africa (near sunset)
5
ts
er
si
et
t
i
n
S
Uranus is 0.6° south of Mars
a
p
Tr
12
Ju
Fall begins at equinox, 8:29 p.m. EST
e
n
A
42
Rise
tu
Venus reaches inferior conjunction, 8°
M
p
19
a
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e
north of the Sun
u
N
eb
N s
Mercury is 19° east of the Sun
26
n t
rio e
Jupiter comes to opposition
P
O S
Set
es
s
u
is
5
Earliest end of evening twilight
n
R
Ve
es
Earliest sunset
ar
12
t
n
Saturn is at opposition tonight
A
Rise
A
Shortest day, 10h 13m at latitude
19
30° south; winter begins at the
es
solstice, 2:24 p.m. EST
26
is
P
R
Regulus is 1.1° lower right of
rn
2
Mercury
Set
tu
a
Mercury is 27° east of Sun
S
9
Total solar eclipse in a
r
A Rise
path across the United
its
16
cu
ns
States, partial in
er
a
M
Tr
northern South
23
ss
o
America
r
C
P
Set
Neptune is at
rn
30
e
th
opposition tonight
ou
S
7
Spica is 3.1° upper
left of Jupiter
A
14
Uranus comes to
Rise
opposition
21
Mercury reaches
P
its greatest
28
elongation, 22°
Set
east of the Sun
4
Longest day at
A
es
latitude 30°
11
is
h
m
R
south, 14 05
Rise
its

2

u ry

Feb 27
Mar 20
Mar 25

1

Y

Midnight

UAR

754

11

e
Sunris

Julian day 2,457,000+

10

M e rc

Feb 26

9

Sunset

Jan 1
Jan 4
Jan 9
Jan 12

8

A S U P P L E ME NT T O SKY & TELESCOPE

FEBR

7 p.m.

EVENING SKY

M ORNI NG

Y

EVEN IN G

2017
UAR

FOR L ATITUDES
NEAR 30° SOUTH

JAN

Skygazer's 30°S
Almanac

Sky & Telescope
90 Sherman St.
Cambridge, MA 02140
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5 a.m.
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(moonset)

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Sky and Telescope - January 2017

Table of Contents for the Digital Edition of Sky and Telescope - January 2017

Contents
Sky and Telescope - January 2017 - Cover1
Sky and Telescope - January 2017 - Cover2
Sky and Telescope - January 2017 - 1
Sky and Telescope - January 2017 - Contents
Sky and Telescope - January 2017 - 3
Sky and Telescope - January 2017 - 4
Sky and Telescope - January 2017 - 5
Sky and Telescope - January 2017 - 6
Sky and Telescope - January 2017 - 7
Sky and Telescope - January 2017 - 8
Sky and Telescope - January 2017 - 9
Sky and Telescope - January 2017 - 10
Sky and Telescope - January 2017 - 11
Sky and Telescope - January 2017 - 12
Sky and Telescope - January 2017 - 13
Sky and Telescope - January 2017 - 14
Sky and Telescope - January 2017 - 15
Sky and Telescope - January 2017 - 16
Sky and Telescope - January 2017 - 17
Sky and Telescope - January 2017 - 18
Sky and Telescope - January 2017 - 19
Sky and Telescope - January 2017 - 20
Sky and Telescope - January 2017 - 21
Sky and Telescope - January 2017 - 22
Sky and Telescope - January 2017 - 23
Sky and Telescope - January 2017 - 24
Sky and Telescope - January 2017 - 25
Sky and Telescope - January 2017 - 26
Sky and Telescope - January 2017 - 27
Sky and Telescope - January 2017 - 28
Sky and Telescope - January 2017 - 29
Sky and Telescope - January 2017 - 30
Sky and Telescope - January 2017 - 31
Sky and Telescope - January 2017 - 32
Sky and Telescope - January 2017 - 33
Sky and Telescope - January 2017 - 34
Sky and Telescope - January 2017 - 35
Sky and Telescope - January 2017 - 36
Sky and Telescope - January 2017 - 37
Sky and Telescope - January 2017 - 38
Sky and Telescope - January 2017 - 39
Sky and Telescope - January 2017 - 40
Sky and Telescope - January 2017 - 41
Sky and Telescope - January 2017 - 42
Sky and Telescope - January 2017 - 43
Sky and Telescope - January 2017 - 44
Sky and Telescope - January 2017 - 45
Sky and Telescope - January 2017 - 46
Sky and Telescope - January 2017 - 47
Sky and Telescope - January 2017 - 48
Sky and Telescope - January 2017 - 49
Sky and Telescope - January 2017 - 50
Sky and Telescope - January 2017 - 51
Sky and Telescope - January 2017 - 52
Sky and Telescope - January 2017 - 53
Sky and Telescope - January 2017 - 54
Sky and Telescope - January 2017 - 55
Sky and Telescope - January 2017 - 56
Sky and Telescope - January 2017 - 57
Sky and Telescope - January 2017 - 58
Sky and Telescope - January 2017 - 59
Sky and Telescope - January 2017 - 60
Sky and Telescope - January 2017 - 61
Sky and Telescope - January 2017 - 62
Sky and Telescope - January 2017 - 63
Sky and Telescope - January 2017 - 64
Sky and Telescope - January 2017 - 65
Sky and Telescope - January 2017 - 66
Sky and Telescope - January 2017 - 67
Sky and Telescope - January 2017 - 68
Sky and Telescope - January 2017 - 69
Sky and Telescope - January 2017 - 70
Sky and Telescope - January 2017 - 71
Sky and Telescope - January 2017 - 72
Sky and Telescope - January 2017 - 73
Sky and Telescope - January 2017 - 74
Sky and Telescope - January 2017 - 75
Sky and Telescope - January 2017 - 76
Sky and Telescope - January 2017 - 77
Sky and Telescope - January 2017 - 78
Sky and Telescope - January 2017 - 79
Sky and Telescope - January 2017 - 80
Sky and Telescope - January 2017 - 81
Sky and Telescope - January 2017 - 82
Sky and Telescope - January 2017 - 83
Sky and Telescope - January 2017 - 84
Sky and Telescope - January 2017 - Cover3
Sky and Telescope - January 2017 - Cover4
Sky and Telescope - January 2017 - SGA17RAL
Sky and Telescope - January 2017 - 90
Sky and Telescope - January 2017 - SGA17R
Sky and Telescope - January 2017 - SGA17RA
Sky and Telescope - January 2017 - SGA17EAL
Sky and Telescope - January 2017 - 94
Sky and Telescope - January 2017 - SGA17E
Sky and Telescope - January 2017 - SGA17EA
Sky and Telescope - January 2017 - SGA17SAL
Sky and Telescope - January 2017 - 98
Sky and Telescope - January 2017 - SGA17S
Sky and Telescope - January 2017 - SGA17SA
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