Sky & Telescope - January 2021 - SA1

2021
4

P

r

te

ts

RY

8

es

12

is
R

A

u

tu

rn

ha

ta

n

15

14

N

ep

t

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un

is

22

29
5

es

12
19

26
Eta
Aquariids

3

15

17

ts

M AY

335

10 A

16

Se

24

es

P

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31

U

488

P

Southern
Taurids

1

u
an

Sa

tu

OCTO

P

3

D

Greatest
elongation

C

5

C

s
pu

Si

6

Greatest illuminated extent

9
Opposition

10

11
New
Moon

Midnight
First
Quarter

Full
Moon

1

a
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n
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N

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a

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42

t s Leonids
si

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a

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27

18

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JUNE

J U LY

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TEM

20

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11

25
1
8
15
22
29
6
13

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it

4

Orionids

s
iu

2
Last
Quarter

Se

ts

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S
Rise

it

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Geminids

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M

R
ECEMBE

549

E
NOV

4

Set

le

ts

s
an

s

Northern
Taurids

Rise

7 p.m.
Conjunction
(appulse)

Sun
fast

A

Sunset

26

LM

m

13

Rise

R
MBE

Set

C

ul

6

ts

M e rc u r y

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23

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Sm

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lla

l

C

d
ou

in

P

OCT

458

ER
PTEMB

ry
cu
ts

23

lM

P

24

twilight

19
Feb 6 Saturn is 0.7° below Venus
on the 6th, and 0.7° above
26
left of Venus on the 7th
Feb 12 Jupiter is 0.5° left of Venus,
3
but they are so low you may
need binoculars
10
Mar 5 Mercury is 0.5° left of Jupiter
on the 5th, 0.5° below it
17
on the 6th
Mar 7 Mercury is 27° west of the Sun
24
Mar 30 Neptune is 1.5° north of Mercury
31
on the 30th, 1.5° northwest of
it on the 31st
7
Jul 1 Latest sunrise of the year
Jul 4 Latest onset of morning twilight
14
Jul 5 Mercury is 22° west of the Sun
21
Jul 6 Earth is 152,100,527 km from the
Sun (aphelion) at 8:27 a.m. AEST
28
Sep 23 Spring begins at the equinox,
5:21 a.m. AEST
5
Oct 25 Mercury is 18° west of the Sun
Dec 3 Earliest sunrise at latitude 30° south
12
Dec 9 Earliest onset of morning twilight
19
Dec 22 Summer begins at the solstice,
1:59 a.m. AEST

A

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lm

12

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A

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20

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427

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Set

22

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12

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21

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UST

396

J U LY

N

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Delta
Aquariids

el

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20

ig

R

28

Ri

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21

P

mornin
g twilight

p

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Start
of

19

r
ite

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ns

BER
DECEM

tu

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Sunrise

Sa

14

its

Ma
rs R
ise
s

366

JUNE

Tr

18

s
an

M

us
Ven

M

Se

evening
En d o f

MORNING SKY

7

A

Ju

pi

17

AUG

te

r

R

y

M AY

APR

Sa

Ma
rs

13

lp

C

en

a
Tr
ri

ts
si

H

Sun
slow

Set
s

of

End

1

11

twil
ight

eve
ning

22

Equation
of time

MARC

RUA

15

APRIL

pi

Ju

246

8

10

FEB

27 4

H

1

s
se
Ri
ry
rcu

RC

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25

Me

MA

18

ht

305

11

twilig

IL

4

Sunris

8

A

5 a.m.

s
ise

g
ornin
of m

Sunset

Sa

3

7

a
Jan 2 Earth is 147,093,163 km from the Sun
Tr
ts
10
s
ts nsi
e
(perihelion) at 11:51 p.m. AEST
e
d
a
S Tra
Set
ei
Jan 3 Latest end of evening twilight
Pl
17
s
e pus
e
Jan 9 Latest sunset
at
un no
t
n
a
i
ts
24
Jan 11 Mercury is 1.5° above left of Jupiter,
si
ep C
lm
n
u
N
with Saturn 2.3° to lower left of each
a
C
Tr
Se
(use binoculars)
31
Rise
P
y
r
C
9
s
Jan 20 Uranus is 1.6° south of Mars
cu
LM
ir u
7 Mer
i
Jan 24 Mercury is 19° east of the Sun
S
ts
Se
Mar 20 Fall begins at the equinox,
14
Set
ts
A
7:37 p.m. AEST
si
s
an
r
nu
T
May 17 Mercury is 22° east of the Sun
21
a
r
42
U
May 26 A barely total lunar eclipse for the
M
a
l
28
u
Pacific Ocean and Rim, including
P
eb
Rise
N
Australia, with maximum at
n
o
7
11:19 UT
ri
O
May 29 Mercury is 0.5° left of Venus,
14
but low - use binoculars
A
Set
Jun 7 Earliest end of evening twilight
21
Jun 10 Earliest sunset; annular solar
es
is
eclipse in a path across the
28
R
P
Arctic Ocean
Rise
s
4
re
Jun 21 Shortest day, 10h 13m at
ta
n
latitude 30° south; winter
A
11
begins at the solstice,
A
1:32 p.m. AEST
Set
s
18
it
Jul 13 Mars is 0.5° above
ns
a
r
left of Venus
T
25
ss
Jul 22 Venus and Regulus
o
r
Rise
P
C
are 2.2° apart
2
rn
e
Jul 30 Mars and Regulus
h
ut
are 0.6° apart
9
So
A
Aug 2 Saturn is at
Set
16
opposition tonight
Aug 19 Mercury is just
23
0.2° above Mars
P
this evening;
Rise
30
Jupiter is at
r
cu
opposition tonight
er
6
M
Sep 5 Venus and Spica
are 1.7° apart
13
Set
tonight and
tomorrow
20
Sep 14 Mercury is 27°
east of the Sun;
27
Rise
Neptune is at
opposition tonight
4
Oct 16 Venus and Antares
11
are 1.5° apart
Set
tonight and
18
tomorrow
Oct 29 Venus is 47° east
Alpha
25
of the Sun
Capricornids
Rise
Nov 4 Uranus is at
1
opposition tonight
Nov 19 Partial lunar eclipse
8
for Australia (at
Set
nightfall), the Pacific
15
Ocean, and South
America (near dawn)
22
es
Dec 4 Total solar eclipse in a
Rise
is
R
path across Antarctica
29
us
Dec 22 Longest day, 14h 05m
n
ra
5
at latitude 30° south
U

J A N U A RY

2

Y

Rise

ns

1

UAR

Midnight

SOU TH

FEBR

11

3 0°

Y

10

it

ts

t
S eu r n
ts

215

9

NE A R

MORNING

R
us
Ven

3

L AT I TUDES

Start

Julian day 2,459,000+

8

Se

7 p.m.

EVENING SKY

FOR

A SUPPLEMENT TO SK Y & TELESCOPE

UAR

EVENING

JAN

Skygazer's
Almanac 30°S

27

Computed by Roger W. Sinnott

Sky & Telescope
One Alewife Center
Suite 300B
Cambridge, MA
02140, USA

5 a.m.
Waxing
(moonset)

Waning
(moonrise)



Sky & Telescope - January 2021

Table of Contents for the Digital Edition of Sky & Telescope - January 2021

Contents
Sky & Telescope - January 2021 - Cover1
Sky & Telescope - January 2021 - Cover2
Sky & Telescope - January 2021 - 1
Sky & Telescope - January 2021 - Contents
Sky & Telescope - January 2021 - 3
Sky & Telescope - January 2021 - 4
Sky & Telescope - January 2021 - 5
Sky & Telescope - January 2021 - 6
Sky & Telescope - January 2021 - 7
Sky & Telescope - January 2021 - 8
Sky & Telescope - January 2021 - 9
Sky & Telescope - January 2021 - 10
Sky & Telescope - January 2021 - 11
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Sky & Telescope - January 2021 - 13
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Sky & Telescope - January 2021 - 17
Sky & Telescope - January 2021 - 18
Sky & Telescope - January 2021 - 19
Sky & Telescope - January 2021 - 20
Sky & Telescope - January 2021 - 21
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Sky & Telescope - January 2021 - 24
Sky & Telescope - January 2021 - 25
Sky & Telescope - January 2021 - 26
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Sky & Telescope - January 2021 - 30
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Sky & Telescope - January 2021 - 83
Sky & Telescope - January 2021 - 84
Sky & Telescope - January 2021 - Cover3
Sky & Telescope - January 2021 - Cover4
Sky & Telescope - January 2021 - SA1
Sky & Telescope - January 2021 - SA2
Sky & Telescope - January 2021 - SA3
Sky & Telescope - January 2021 - SA4
Sky & Telescope - January 2021 - SA5
Sky & Telescope - January 2021 - SA6
Sky & Telescope - January 2021 - SA7
Sky & Telescope - January 2021 - SA8
Sky & Telescope - January 2021 - SA9
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