September Astronomy

Rise and shine!  The Crescent Moon and the planets in the early morning twilight.

Rise and shine! The Crescent Moon and the planets in the early morning twilight.

| Categories: Mark Breen, Planetarium News, Skywatch Almanac Astronomy

The summer skies, like the weather, are in transition through September.  The Scorpion lowers into the southwest through the month, followed by the Teapot in Sagittarius.  Between them Saturn remains in view, getting lower each evening.  Earlier evenings feature the Big Dipper sinking lower into the northwestern skies, while the broad, faint path of the Milky Way arches from northeast to southwest.  The Summer Triangle lingers above, while the eastern skies are relatively absent of bright stars.  Jupiter disappears into the glare of the setting Sun.  Early risers will see the brilliant Venus, and mid-month will enjoy a meeting of Mercury and Mars.

Highlights

12 –  Mercury makes its best morning appearance of the year, low in the east near 5:30 AM.

17 – The waning Crescent Moon tracks through the morning planets—see diagram above.

22 – The Autumnal Equinox, the beginning of Fall, occurs this afternoon at 4:02 PM EDT.

26 – The First Quarter Moon is just above and right of Saturn in the southern skies.


We’re cleaning out the planetarium from September 5th through September 11th.

There will be no public planetarium shows during this time.

Check out the schedule of presentations in Vermont’s only public planetarium.


From The Old Farmer’s Almanac: The Full “Corn” Moon corresponds with the time of harvesting corn. It is also called the Barley Moon, because it is the time to harvest and thresh the ripened barley. The Harvest Moon is the full Moon nearest the autumnal equinox, which can occur in September or October and is bright enough to allow finishing of all the harvest chores.

September Moon phases and Lunar Calendar in St. Johnsbury, VT:

SUN MON TUE WED THU FRI SAT

1

Moon Phase

80%
11 days

2

Moon Phase

87%
12 days

3

Moon Phase

93%
13 days

4

Moon Phase

97%
14 days

5

Moon Phase

100%
15 days

6

Moon Phase

Full Moon
3:04 A.M.

7

Moon Phase

98%
17 days

8

Moon Phase

93%
18 days

9

Moon Phase

87%
19 days

10

Moon Phase

78%
20 days

11

Moon Phase

68%
21 days

12

Moon Phase

57%
22 days

13

Moon Phase

Last Quarter
2:26 A.M.

14

Moon Phase

34%
24 days

15

Moon Phase

24%
25 days

16

Moon Phase

15%
26 days

17

Moon Phase

8%
27 days

18

Moon Phase

3%
28 days

19

Moon Phase

0%
29 days

20

Moon Phase

New Moon
1:30 A.M.

21

Moon Phase

2%
1 day

22

Moon Phase

6%
2 days

23

Moon Phase

12%
3 days

24

Moon Phase

19%
4 days

25

Moon Phase

28%
5 days

26

Moon Phase

36%
6 days

27

Moon Phase

First Quarter
10:55 P.M.

28

Moon Phase

55%
8 days

29

Moon Phase

65%
9 days

30

Moon Phase

74%
10 days

 

Tags: almanac, astronomy, Fairbanks Musem, Mark Breen Skywatch, Night Sky, planetarium, Saint Johnsbury, St. Johnsbury, vermont