Sky & Telescope - January 2021 - SA4
2021
13
Eta Aquariids
16
R
17
nu
is
es
s
A
18
P
an
Tr
A
en
ts
eb
M
JUL
Y
D
si
erc
396
R
ST
427
21
B
et
e
e
lg
us
i
s
se
e
9
Perseids
16
549
DECE
Sunse
26
R
is
es
Sun
fast
Northern
Taurids
4
O
Set
U
ts
3
ra
s
nu
an
Tr
ts
si
P
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1
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a
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Leonids
8
ry
15
Ri
ts
a
Tr Geminids
s
P
l
ol
ux
Tr
s
an
its
Se
6
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U
ra
nu
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ul
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us
an
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si
se
ts
Ursids
s
22
29
P
6
A
nt
ar
e
es
is
R A
s
t
5 p.m.
Conjunction
(appulse)
6
Greatest
elongation
7
8
Greatest illuminated extent
9
Opposition
10
11
New
Moon
Midnight
First
Quarter
RY
UA
BR
25
e
un sits
n
42
T
18
Orionids
ts
R
11
Sky & Telescope
One Alewife Center
Suite 300B
Cambridge, MA
02140
USA
Full
Moon
1
2
Last
Quarter
3
A Apogee
4
P Perigee
5
Waxing
(moonset)
6
7 a.m.
Waning
(moonrise)
13
S u n ri se
19
s
er
m
4
n
Se
Rise
y
ur
rc Se
12
P
Me
5
MBER
28
iu
U
pp
ul
27
BER
21
r
Si
2
C
a
E
A
Set
Venus Sets
twilig
ht
14
End of evening
NOV
EMB
ER
519
P
s
20
V
NO
t
t
Se
in
io
at
ol
s
ri
R
Sa
Rise
n
ur
Southern
Taurids
1
P
13
E
MB
A
ep
e
of
S
r
OC
N
n
tu
31
7
Ju
te
pi
Computed by Roger W. Sinnott
S
ry
cu
er
M
48
8
OC
TO
17
24
6
s
et
Mars Rise s
Se
ts
30
t
BE
R
Set
FE
23
ligh
t wi
10
Tr
its
CH
2
23
s
an
AR
26
Delta
Aquariids
Rise
P
M
19
P
E
OB
JUNE
U
ra
24
3
Jan 3
L
Rise
15
GU
26
r
22
RI
Lyrids
AU
8
45
R
BE
EM
J
A
te
MORNING SKY
15
g
rnin
mo
PT
19
i
up
Tr
8
of
SE
Set
it
1
rt
Sta
12
P
s
an
22
Latest onset
of morning
twilight at
latitude 50° north
29
Mar 6 Mercury reaches
greatest elongation,
5
27° west of the Sun
12
Mar 20 Spring begins at the
equinox, 9:37 UT
19
May 26 A barely total lunar eclipse
is visible from the Pacific
26
Ocean and Rim regions, with
P
maximum at 11:19 UT
3
Jun 10 An annular eclipse of the Sun
takes place in a path from Ontario,
10 A
Canada, across the Arctic and into
northeastern Russia
17
Jun 16 Earliest sunrise of the year at latitude
50° north
24
P
Jun 21 Summer begins at the solstice, 3:32 UT
31
Jul 5 Mercury is 22° west of the Sun
Oct 25 Mercury reaches greatest elongation,
7
18° west of the Sun
Nov 8 The Moon occults Venus at midday for
14
northeastern Asia and in early afternoon
for most of Japan (except the southern21
most part)
28
Nov 19 A partial eclipse of the Moon is visible
from North America and the Pacific
5
Ocean, becoming very nearly total
around 9:03 UT
12
Dec 31 Latest sunrise of the year
14
366
MA
Y
335
s
et
sS
nu
Ve
5
15
Y
AP
w
12
RIL
3 05
MA
Jan 2 Earth is
Set
ul
147,093,163 km
21
eg
R
from the Sun
(perihelion) at
28
P
13:51 UT
Rise
Jan 11 Jupiter has Mercury
4
1.4° to its lower left and
Saturn 2.3° to lower
11
A
right, but they are quite
Set
low in bright twilight (sweep
18
for them with binoculars)
Me
25
Jan 21 Uranus can be found 1.6°
rc u
P
south of Mars in a telescope
ry
Se
2
Jan 23 Mercury reaches greatest
ts
elongation, 19° east of the Sun
A 9
May 16 Mercury is 22° east of the Sun
Set
May 28 Mercury is 0.5° left of Venus,
16
but low - use binoculars
23
Jun 21 Longest day, 16h 22m at latitude
50° north
Rise
30
Jun 25 Latest sunset
Jul 5 Earth is 152,100,527 km from the Sun
6
(aphelion) at 22:27 UT
Set
Jul 13 Mars is 0.5° below Venus, but they are
13
low (use binoculars)
es
Aug 1 Saturn comes to opposition with the
20
is
R
Sun tonight
Rise
r
27
Aug 19 Jupiter reaches opposition
ite
p
Sep 13 Mercury stands 27° east of the Sun;
Ju
4
es
19
Neptune is at opposition tonight
is
es
R
is
Set
Sep 16 Owing to precession, Polaris reaches
R
11
n
and crosses the 3h meridian of right
ur
e
t
n
ascension (equinox of date)
18
Sa
tu
20
Sep 22 Fall begins at the equinox, 19:21 UT
ep
N
25
Oct 29 Venus stands at greatest elongation,
Rise
47° east of the Sun
1
Nov 4 Uranus comes to opposition tonight
A
Dec 4 Total solar eclipse in a path across
8
Set
Antarctica
ts
si
n
Dec 9 Earliest end of evening twilight
15
a
P
Tr
Dec 12 Earliest sunset
n
22
r
22
Dec 21 Shortest day, 8h 04m at
tu
Rise
a
S
latitude 50° north; winter
A
29
begins at the solstice,
15:59 UT
s
Lo
C
a
M e rc
Tr A
er
in
es
AP
its
m
ul
Sets
us
11
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EP
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274
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Equation
of time
18
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A SUPPLEMENT TO SK Y & TELESCOPE
N
ep
tu
5 p.m.
L AT I TUDES
20
27
DECEM
EVENING
FOR
U A RY
Skygazer's
Almanac 50°N
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
Sky & Telescope - January 2021 - 12
Sky & Telescope - January 2021 - 13
Sky & Telescope - January 2021 - 14
Sky & Telescope - January 2021 - 15
Sky & Telescope - January 2021 - 16
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
Sky & Telescope - January 2021 - 22
Sky & Telescope - January 2021 - 23
Sky & Telescope - January 2021 - 24
Sky & Telescope - January 2021 - 25
Sky & Telescope - January 2021 - 26
Sky & Telescope - January 2021 - 27
Sky & Telescope - January 2021 - 28
Sky & Telescope - January 2021 - 29
Sky & Telescope - January 2021 - 30
Sky & Telescope - January 2021 - 31
Sky & Telescope - January 2021 - 32
Sky & Telescope - January 2021 - 33
Sky & Telescope - January 2021 - 34
Sky & Telescope - January 2021 - 35
Sky & Telescope - January 2021 - 36
Sky & Telescope - January 2021 - 37
Sky & Telescope - January 2021 - 38
Sky & Telescope - January 2021 - 39
Sky & Telescope - January 2021 - 40
Sky & Telescope - January 2021 - 41
Sky & Telescope - January 2021 - 42
Sky & Telescope - January 2021 - 43
Sky & Telescope - January 2021 - 44
Sky & Telescope - January 2021 - 45
Sky & Telescope - January 2021 - 46
Sky & Telescope - January 2021 - 47
Sky & Telescope - January 2021 - 48
Sky & Telescope - January 2021 - 49
Sky & Telescope - January 2021 - 50
Sky & Telescope - January 2021 - 51
Sky & Telescope - January 2021 - 52
Sky & Telescope - January 2021 - 53
Sky & Telescope - January 2021 - 54
Sky & Telescope - January 2021 - 55
Sky & Telescope - January 2021 - 56
Sky & Telescope - January 2021 - 57
Sky & Telescope - January 2021 - 58
Sky & Telescope - January 2021 - 59
Sky & Telescope - January 2021 - 60
Sky & Telescope - January 2021 - 61
Sky & Telescope - January 2021 - 62
Sky & Telescope - January 2021 - 63
Sky & Telescope - January 2021 - 64
Sky & Telescope - January 2021 - 65
Sky & Telescope - January 2021 - 66
Sky & Telescope - January 2021 - 67
Sky & Telescope - January 2021 - 68
Sky & Telescope - January 2021 - 69
Sky & Telescope - January 2021 - 70
Sky & Telescope - January 2021 - 71
Sky & Telescope - January 2021 - 72
Sky & Telescope - January 2021 - 73
Sky & Telescope - January 2021 - 74
Sky & Telescope - January 2021 - 75
Sky & Telescope - January 2021 - 76
Sky & Telescope - January 2021 - 77
Sky & Telescope - January 2021 - 78
Sky & Telescope - January 2021 - 79
Sky & Telescope - January 2021 - 80
Sky & Telescope - January 2021 - 81
Sky & Telescope - January 2021 - 82
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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