PSC
CET
SCL
FOR
CAE
ERI
CAS
AND
TRI
ARI
PER
AUR
TAU
ORI
COL
LEP
LY N
GEM
CNC
CMi
CMA
MON
PUP
PYX
Early evening
Sun
Mercury
Venus
Mars
Uranus
22 21 20 19 18 17 16 15 14 13 12 11
Callisto
Europa
Io Ganymede
Jupiter
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
10"
N
S
WE
Jupiter
Uranus
Saturn
Neptune Pluto
Io
Ganymede
Europa
Callisto
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.
JUPITER’S
MOONS
Dots display
positions of
Galilean satellites
at 5 A.M. EDT on
the date shown.
South is at the
top to match the
view through a
telescope.
APRIL 2021
April 15
1.4
5.0"
92%
1.886
1.628
5h36.1m
24°48'
April 15
9.0
0.3"
100%
3.901
2.911
1h26.0m
1°33'
April 15
–2.1
35.9"
99%
5.498
5.062
21h52.1m
–13°40'
April 15
0.6
16.3"
100%
10.218
9.970
20h58.7m
–17°42'
April 15
5.9
3.4"
100%
20.728
19.758
2h28.9m
14°16'
April 15
- 8
2.2"
100%
30.758
29.925
23h30.9m
–4°19'
April 15
15.2
0.1"
100%
34.272
34.261
19h55.1m
–22°13'
MARS CERES JUPITER SATURN URANUS NEPTUNE PLUTO