Sky and Telescope - June 2018 - 41
1 EARLY MORNING: The waning gibbous Moon poses
some 3°° left of Saturn above the Teapot in Sagittarius.
3 EARLY MORNING: Look toward the east-southeast to
see the Moon and Mars rising a little more than 3° apart.
10 EVENING: Venus and the brightest lights of Gemini
form a shiny string of beads as they set toward the west,
with Venus blazing on the left, Castor twinkling on the
right, and Pollux almost exactly halfway between.
15 DUSK: Mercury emerges from the gloaming as it sets
in the northwest. Binoculars will help coax this tiny world
out of the glare of the setting Sun. Visibility improves
throughout the month.
16 EVENING: Look toward Cancer in the west after
sunset to see the thin sliver of the waxing crescent Moon
about 8° from dazzling Venus, with the Beehive Cluster
(M44) almost exactly halfway between.
17 DUSK: The Moon leads Regulus by some 3° as they
sink together in the west.
19-20 ALL NIGHT: Vesta is at opposition with the Sun and,
at magnitude 5.3, visible throughout the night even to the
naked eye at dark enough locations; see page 48. To ﬁnd
this minor planet, look just under 1° upper left of the halfway
point along a line connecting Lambda (λ) Sagittarii (the top
star of the Teapot) and Eta (η) Ophiuchi.
21 THE LONGEST DAY OF THE YEAR in the Northern
Hemisphere. Summer begins at the solstice, 10:07 UT
(6:07 a.m. EDT).
23 NIGHT: A waxing gibbous Moon and regal Jupiter share
the spotlight in Libra, shining some 4½° apart.
27-28 ALL NIGHT: Saturn is at opposition to the Sun; see
page 50. The planet, with its rings tilted at almost maximum
extent, shines at magnitude +0.0. The full Moon is only about
1° away, but don't let that deter you from trying to spot this
From an altitude of 2,700 km above Vesta's surface, NASA's Dawn
spacecraft obtained this image of mountains at the asteroid's south
pole that are several kilometers high (see page 48).
NASA / JPL-CALTECH / UCLA / MPS / DLR / IDA
sk yandtelescope.com * J U N E 2 018