Sky and Telescope - January 2016 - 51

Learn how to use detailed star charts to ﬁnd the faintest things your telescope can show: skypub.com/charts.

Asteroid Occultations
On the night of January 1-2, telescope
users from southern Georgia to San
Diego can watch for an 8.8-magnitude
star in the feet of Gemini to be occulted
by the faint asteroid 1173 Anchises for
up to 7 seconds.
On the night of January 21-22, the
9.9-magnitude asteroid 115 Thyra will
occult a 9.0-magnitude star near the
heads of Gemini along a narrow track
from southern New Jersey through the
San Diego area. Watch them merge,

before their combined light drops by 1.3
magnitudes for up to 7 seconds.
On the evening of January 23rd,
along a track from southern New Jersey
to northern California, faint 866 Fatme
will occult a 9.5-magnitude yellow star
in central Gemini for up to 5 seconds.
Late on the evening of January 27th,
observers from eastern Massachusetts
northwestward through the Ottawa
area may see a 9.5-magnitude star at the
Orion-Monoceros border being blacked

out for up to 7 seconds by 329 Svea.
For maps, time predictions, and ﬁnder
charts for the stars to be occulted, see
asteroidoccultation.com/IndexAll.htm.
For how to time these events and
where to report, see asteroidoccultation.
com/observations.
Videorecording yields the desired
accuracy, and it's not as expensive or difﬁcult as you may think; see the "Equipment" heading on that page.
For advice and help, join the International Occultation Timing Association
(IOTA) discussion group at groups.yahoo.
com/neo/groups/IOTAoccultations. ✦

Phenomena of Jupiter's Moons, January 2016
Jan. 1

Jan. 2

Jan. 3

Jan. 4

14:12

III.Ec.D

3:05

I.Tr.I

10:12

IV.Tr.E

17:48

I.Tr.I

0:11

I.Sh.I

8:29

I.Tr.I

15:39

I.Ec.D

4:12

I.Sh.E

10:27

I.Tr.I

19:02

I.Sh.E

1:09

I.Tr.I

9:51

I.Sh.E

20:02

I.Tr.E

2:26

I.Sh.E

10:43

I.Tr.E

13:54

I.Ec.D

3:22

I.Tr.E

15:11

IV.Sh.I

17:12

I.Oc.R

18:34

IV.Sh.E

4:58

II.Sh.I

7:03

II.Tr.I

17:39

III.Ec.R

5:19

I.Tr.E

11:37

I.Sh.E

19:06

III.Oc.D

23:04

I.Ec.D

12:41

I.Tr.E

19:06

I.Oc.R

2:29

I.Oc.R

6:29

I.Ec.D

22:19

III.Oc.R

13:05

II.Sh.I

8:10

III.Sh.I

5:35

II.Ec.D

15:23

II.Tr.I

9:51

I.Oc.R

Jan. 6

Jan. 12

Jan. 18

Jan. 23

21:19

I.Ec.D

0:33

I.Oc.R

2:06

III.Ec.D

Jan. 28

0:03

IV.Tr.I

1:55

IV.Tr.E

10:41

II.Oc.R

15:54

II.Sh.E

11:33

III.Sh.E

7:47

II.Sh.E

5:31

III.Ec.R

4:45

I.Ec.D

11:32

IV.Ec.D

18:07

II.Tr.E

12:37

III.Tr.I

9:47

II.Tr.E

6:04

III.Oc.D

7:53

I.Oc.R

13:01

I.Sh.I

20:25

I.Sh.I

15:46

III.Tr.E

11:15

I.Sh.I

9:14

III.Oc.R

20:51

II.Sh.I

14:10

I.Tr.I

21:32

I.Tr.I

21:25

II.Ec.D

12:15

I.Tr.I

13:15

II.Ec.D

22:37

II.Tr.I

15:10

IV.Ec.R

22:40

I.Sh.E

2:19

II.Oc.R

13:30

I.Sh.E

17:53

II.Oc.R

23:39

II.Sh.E

14:29

I.Tr.E

18:40

I.Sh.I

1:21

II.Tr.E

5:32

IV.Ec.D

19:35

I.Tr.I

2:04

I.Sh.I

8:23

I.Ec.D

20:55

I.Sh.E

2:55

I.Tr.I

21:49

I.Tr.E

4:20

I.Sh.E

15:48

I.Ec.D

5:09

I.Tr.E

19:00

I.Oc.R

23:13

I.Ec.D

7:33

II.Sh.I

15:16

I.Sh.E

16:24

I.Tr.E

23:24

IV.Oc.D

Jan. 8

I.Tr.E

3:50

I.Sh.I

17:32

I.Ec.D

4:54

I.Tr.I

18:10

III.Ec.D

6:05

I.Sh.E

1:42

IV.Oc.R

20:56

I.Oc.R

I.Ec.D

21:36

III.Ec.R

13:34

I.Oc.R

23:48

II.Sh.I

Jan. 9

Jan. 13

23:46

10:07

Jan. 14

Jan. 19

7:08

I.Tr.E

9:02

IV.Ec.R

0:57

I.Ec.D

11:39

I.Oc.R

22:50

III.Oc.D

4:18

I.Oc.R

12:07

III.Sh.I

2:01

III.Oc.R

15:40

II.Sh.I

15:30

III.Sh.E

Jan. 24
Jan. 25

Jan. 29

Jan. 30

2:20

I.Oc.R
III.Ec.D

2:10

II.Tr.I

8:08

II.Ec.D

17:50

II.Tr.I

15:53

IV.Oc.D

9:26

II.Tr.I

6:05

2:37

II.Sh.E

13:07

II.Oc.R

18:29

II.Sh.E

16:14

III.Tr.I

10:22

II.Sh.E

9:29

III.Ec.R

9:35

III.Oc.D

12:44

III.Oc.R

4:54

II.Tr.E

14:54

I.Sh.I

20:34

II.Tr.E

17:49

IV.Oc.R

12:10

II.Tr.E

7:29

I.Sh.I

16:00

I.Tr.I

22:18

I.Sh.I

19:22

III.Tr.E

13:08

I.Sh.I

8:37

I.Tr.I

17:09

I.Sh.E

9:44

I.Sh.E

18:13

I.Tr.E

10:51
Jan. 5

Jan. 7

Jan. 17

Jan. 22

4:13

I.Tr.E

Jan. 10

III.Sh.I

23:21

I.Tr.I

0:33

I.Sh.E

Jan. 20

23:59

II.Ec.D

14:02

I.Tr.I

4:42

II.Oc.R

15:23

I.Sh.E

16:16

I.Tr.E

10:16

I.Ec.D

12:01

I.Ec.D

1:35

I.Tr.E

5:43

I.Sh.I

15:24

I.Oc.R

19:26

I.Ec.D

6:42

I.Tr.I

21:12

IV.Sh.I

22:08

III.Ec.D

7:58

I.Sh.E

13:27

I.Oc.R

0:43

IV.Sh.E

22:45

I.Oc.R

8:56

I.Tr.E

16:04

III.Sh.I

4:36

I.Ec.D

7:36

III.Sh.E

8:01

I.Oc.R

2:23

II.Sh.I

8:56

III.Tr.I

4:37

II.Tr.I

Jan. 11

Jan. 15

Jan. 16

1:34

III.Ec.R

2:30

III.Oc.D

Jan. 21

Jan. 26

2:51

I.Ec.D

19:26

III.Sh.E

6:06

I.Oc.R

19:46

III.Tr.I

12:06

III.Tr.E

5:12

II.Sh.E

5:40

III.Oc.R

18:15

II.Sh.I

18:52

II.Ec.D

7:21

II.Tr.E

10:42

II.Ec.D

20:14

II.Tr.I

23:54

II.Oc.R

8:05

IV.Tr.I

15:31

II.Oc.R

21:04

1:57

I.Sh.I

9:22

I.Sh.I

16:47

I.Sh.I

22:58

22:53

III.Tr.E

2:32

II.Ec.D

II.Sh.E

7:03

II.Oc.R

II.Tr.E

7:36

I.Sh.I

Jan. 27

Jan. 31

15:49

II.Ec.D

20:12

II.Oc.R

20:33

I.Sh.I

21:22

I.Tr.I

22:48

I.Sh.E

23:36

I.Tr.E

17:41

I.Ec.D

20:46

I.Oc.R

Every day, interesting events happen between Jupiter's satellites and the planet's disk or shadow. The ﬁrst columns give the date and mid-time of the event, in Universal Time (which is 4 hours ahead of
Eastern Daylight Time). Next is the satellite involved: I for Io, II Europa, III Ganymede, or IV Callisto. Next is the type of event: Oc for an occultation of the satellite behind Jupiter's limb, Ec for an eclipse
by Jupiter's shadow, Tr for a transit across the planet's face, or Sh for the satellite casting its own shadow onto Jupiter. An occultation or eclipse begins when the satellite disappears (D) and ends when
it reappears (R). A transit or shadow passage begins at ingress (I) and ends at egress (E). Each event is gradual, taking up to several minutes. Predictions courtesy IMCCE / Paris Observatory.

Sk yandTelescope.com Januar y 2016

51
http://www.skypub.com/charts http://www.asteroidoccultation.com/IndexAll.htm http://www.asteroidoccultation.com/observations http://www.asteroidoccultation.com/observations http://groups.yahoo.com/new/groups/IOTAocculations http://groups.yahoo.com/new/groups/IOTAocculations http://www.SkyandTelescope.com
Sky and Telescope - January 2016

Table of Contents for the Digital Edition of Sky and Telescope - January 2016
