Astronomy - USA 2021-04)

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

7. 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