Sky & Telescope - September 2019 - 46
SEPTEMBER 2019 OBSERVING
Sun, Moon & Planets by Fred Schaaf
To find out what's
visible in the sky
from your location,
go to skypub.com/
almanac.
The Month of the Harvest Moon
The smaller planets are largely missing from September's skies, but the two gas giants
are joined by the two ice giants - and the full Moon heralds the harvest.
M
uch of the night is starved of
bright planets this month. Mercury and Mars continue to be hidden
from view in the solar glare. Venus does
gleam back into sight in late September
but early in dusk, very low in the Sun's
afterglow. Jupiter burns in the southwest
as evening twilight fades, while Saturn
shines in the south - but even Saturn is
setting around midnight at month's end.
twilight. Its magnitude dims from -2.2
to -2.0 this month, but of course that's
plenty bright enough for it to stand out
brilliantly in southwestern Ophiuchus
as it continues to move slowly away
from Antares. Jupiter's angular diameter
Dusk, Sept 4 -8
45 minutes after sunset
Moon
Sept 7
Saturn
DUSK
Venus went through superior conjunction on August 14th but in the second
half of September comes back into view
after sunset for observers at mid-northern latitudes. After two months of being
out of sight at these latitudes, Venus is
still difficult to catch due to the shallow angle of the zodiac with respect to
the sunset horizon at this time of year.
Venus sets only about 30 minutes after
the Sun at month's end. On a clear day
in the latter part of September, however,
the brilliance of this -3.9-magnitude
planet stands out briefly down near the
western horizon, even in bright twilight.
Mercury is at superior conjunction
with the Sun on the night of September 3-4. Only with optical aid at more
southerly latitudes will observers be able
to catch fainter Spica a little more than
1° southwest of Mercury on the American evening of September 28th.
Moon
Sept 8
46
S E P TE M B E R 2 019 * SK Y & TELESCOPE
Moon
Sept 6
Moon
Sept 5
Jupiter
S A G I T TA R I U S
Looking South
Sept 12 -16
Moon
Sept 4
Antares
Cat's Eyes
10°
SCORPIUS
Looking South-Southwest
Circlet
Around 9 pm
Moon
Sept 12
Moon
Sept 13
PISCES
Moon
Sept 14
DUSK THROUGH EVENING
Jupiter and Saturn have been the
great planetary attractions of summer
nights. Now, as summer ends, they're
setting earlier. Jupiter begins September just past the meridian in the south
as it comes into view early in evening
decreases from 39″ to 36″ in September.
It reaches eastern quadrature (90° east
of the Sun) on September 8th, so this is
a good month to see eclipses of the Galilean moons (see page 51). By the end of
the month the planet sets not long after
Moon
Sept 16
Moon
Sept 15
Notice the Harvest Moon effect:
A nearly full Moon appears low
in the sky at the same time on
many consecutive evenings.
Fomalhaut
Looking East
Looking East-Southeast
http://www.skypub.com/almanac
http://www.skypub.com/almanac
Sky & Telescope - September 2019
Table of Contents for the Digital Edition of Sky & Telescope - September 2019
Contents
Sky & Telescope - September 2019 - Cover1
Sky & Telescope - September 2019 - Cover2
Sky & Telescope - September 2019 - 1
Sky & Telescope - September 2019 - Contents
Sky & Telescope - September 2019 - 3
Sky & Telescope - September 2019 - 4
Sky & Telescope - September 2019 - 5
Sky & Telescope - September 2019 - 6
Sky & Telescope - September 2019 - 7
Sky & Telescope - September 2019 - 8
Sky & Telescope - September 2019 - 9
Sky & Telescope - September 2019 - 10
Sky & Telescope - September 2019 - 11
Sky & Telescope - September 2019 - 12
Sky & Telescope - September 2019 - 13
Sky & Telescope - September 2019 - 14
Sky & Telescope - September 2019 - 15
Sky & Telescope - September 2019 - 16
Sky & Telescope - September 2019 - 17
Sky & Telescope - September 2019 - 18
Sky & Telescope - September 2019 - 19
Sky & Telescope - September 2019 - 20
Sky & Telescope - September 2019 - 21
Sky & Telescope - September 2019 - 22
Sky & Telescope - September 2019 - 23
Sky & Telescope - September 2019 - 24
Sky & Telescope - September 2019 - 25
Sky & Telescope - September 2019 - 26
Sky & Telescope - September 2019 - 27
Sky & Telescope - September 2019 - 28
Sky & Telescope - September 2019 - 29
Sky & Telescope - September 2019 - 30
Sky & Telescope - September 2019 - 31
Sky & Telescope - September 2019 - 32
Sky & Telescope - September 2019 - 33
Sky & Telescope - September 2019 - 34
Sky & Telescope - September 2019 - 35
Sky & Telescope - September 2019 - 36
Sky & Telescope - September 2019 - 37
Sky & Telescope - September 2019 - 38
Sky & Telescope - September 2019 - 39
Sky & Telescope - September 2019 - 40
Sky & Telescope - September 2019 - 41
Sky & Telescope - September 2019 - 42
Sky & Telescope - September 2019 - 43
Sky & Telescope - September 2019 - 44
Sky & Telescope - September 2019 - 45
Sky & Telescope - September 2019 - 46
Sky & Telescope - September 2019 - 47
Sky & Telescope - September 2019 - 48
Sky & Telescope - September 2019 - 49
Sky & Telescope - September 2019 - 50
Sky & Telescope - September 2019 - 51
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Sky & Telescope - September 2019 - 76
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Sky & Telescope - September 2019 - 78
Sky & Telescope - September 2019 - 79
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Sky & Telescope - September 2019 - 81
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Sky & Telescope - September 2019 - 84
Sky & Telescope - September 2019 - Cover3
Sky & Telescope - September 2019 - Cover4
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