News on what is visable in this months sky as posted by Adrian Zielonka's in his monthly sky notes.
Thank you Adrian and thank you CADAS.
Night Sky 2019 - August
New Moon – 1st
First Quarter –7th
Full Moon – 15th
Last Quarter – 23rd
All times in notes
are set for
There is a
possible launch this month* of a Boeing Commercial Crew Pad Abort
Test. Its to prepare the CST-100 Starliner spacecraft for crew
transportation to the International Space Station (ISS). Boeing will
test the systems' launch capability on the pad and during ascent.
(See 'News' section below)
Comet C/2018 W2 Africano is in the constellation of Camelopardalis
this month. Its at perihelion in September.
Comet C/2018 R3 Lemmon is in the constellation of Lynx at the
beginning of the month. (For further information on either of these,
please see 'Comet' section in the website above).
At 9:30pm on the 2nd a very thin crescent Moon is 4½
degrees above the horizon in the WNW (285 azimuth) with Regulus in
Leo 5 degrees to the lower right of the Moon and just 1 degree above
On the 3rd at 9:30pm in the west the star Denebola (2.1
mag) in Leo is 9 degrees directly above the thin crescent Moon.
the west on 3rd
at 10:00pm the Comet 123P West Hartley is 1¾ degrees above the star
Porrima (2 .7 mag) in Virgo. It was at perihelion on Feb 5th.
It is currently 2.880AU from us and at a very low magnitude. Unlikely
to be seen with a small powered telescope.
South Iota Aquariids meteor shower reaches its peak on the 4th.
At 10:00pm on the 4th the star Porrima (2.7 mag) in Virgo
is 6 degrees to the left of the crescent Moon.
On the 5th at 10:00pm the star Spica (1.0 mag) in Virgo is
8 degrees to the lower left of the crescent Moon.
At 10:00pm on the 7th the Moon is between the two stars
Zubeneschamali (2.6 mag) and Zubenelgenubi (2.7 mag) – both in
The asteroid Ceres is 3½ degrees below left of the Moon at 11:00pm
on the 8th. (For further information please see 'Asteroid'
section in the website above).
On the 8th at midnight the star Acrab (2.5 mag) in
Scorpius is 3 degrees to the lower left of the Moon which is low in
the south west.
At midnight on the 9th Jupiter is just 1¾ degrees to the
lower left of the Moon in the south west.
On the 10th at midnight Jupiter is 12 degrees to the lower
right of the Moon.
Mercury is at maximum western elongation on the 10th. On
the 11th at 5:00am Castor and Pollux in the ENE point the
way to Mercury. Mercury is 7½ degrees above the horizon and at 68.5
At midnight on the 11th Saturn is 6 degrees to the upper
left of the Moon. The star Omicron Sagittarii (3.7 mag) is just half
a degree above Saturn between the 10th - 15th
and by the 30th they will be 1 degree apart.
occultation of Saturn by the Moon occurs on the 12th.
This is only visible from Australia, North New Zealand and many of
the islands north of these countries.
occultation of Pluto occurs also on the 12th.
This will be visible from central Africa and the north half of South
On the 12th at midnight Saturn is 6½ degrees to the right
of the Moon low in the south.
The Perseids meteor
shower reaches its peak on the 12th / 13th.
At midnight on the 14th the star Iota Capricorni (4.2 mag)
is just 2¾ degrees to the upper left of the Moon.
On the 15th at 9:30pm the star Delta Capricorni (2.8 mag) is 3½
degrees to the upper right of the Moon.
At 10:15pm on the 16th the star Tau Aquarii (4.0 mag) is 1
degree below the Moon.
On the 16th at 11:00pm the asteroid Ceres is just 1¼
degrees above the star Dschubba (2.2 mag) in Scorpius. (For further
information please see 'Asteroid' section in the website above).
The Beehive Cluster (M44) is just 1 degree to the upper right of
Mercury on the 17th. At 5:00am Mercury's position is 4
degrees above the horizon and at 65 degrees azimuth (ENE).
On the 17th at midnight Neptune is 5¾ degrees to the
upper right of the Moon. Neptune is ¾ of a degree to the left of the
star Phi Aquarii (4.2 mag).
Kappa Cygnids meteor shower reaches its peak on the 18th.
At 11:00pm on the 18th the star Iota Ceti (3.5 mag) in
Cetus is 4½ degrees to the lower right of the Moon.
Mercury is at perihelion (its nearest to the Sun in its orbit) on the
On the 20th at midnight the star Nu Piscium (4.4 mag) in
Pisces is 2¼ degrees above right of the Moon. Uranus is 10½ degrees
to the left of the Moon.
In the east at midnight on the 21st Uranus is 6 degrees
above the Moon. The Moon is also midway (2 degrees from both) between
Mu Ceti (4.2 mag) and Xi Ceti (4.3 mag) in Cetus.
On the 22nd at midnight the asteroid Vesta is 3½ degrees
to the lower left of the Moon. (For further information please see
'Asteroid' section in the website above).
Between 3:00 – 5:00am on the 24th the Moon will occult
the star Delta Tauri (3.7 mag) in Taurus and other less brighter
stars in close proximity.
At 5:00am on the 25th the star Zeta Tauri (2.9 mag) in
Taurus is 4 degrees to the lower left of the crescent Moon.
On the 26th at 5:00am the star Mu Geminorum (2.8 mag) in
Gemini is just 1¼ degrees to the left of the crescent Moon.
Mars is at aphelion ( Its most distant from the Sun in its orbit) on
Between 4:30 – 5:00am on the 27th the Moon passes very
close to the star Wasat in Gemini. It will pass within a ¼ of a
degree to the upper left of the crescent Moon.
On the 30th at 1:00pm the Moon, Mercury, Venus and Mars
are all within 5 degrees of the Sun.
At 8:30pm on the 31st low in the west (273 degrees
azimuth) a very thin crescent Moon will be just 3 degrees above the
At the end of the month Neptune will be just ½ a degree left of the
star Phi Aquarii (4.2 mag) in Aquarius.
* = Dates and times
are subject to change.
The Sun is 400 times larger than the Moon but is 400 times further
away from Earth, making them appear the same size & only half a
billionth of the energy released by the Sun reaches Earth.
News: NASA and
Boeing completed two different tests of the CST-100 Starliner
parachute system in June at two different locations in the desert of
the western United States. The tests were part of a series of
parachute tests providing valuable data needed to prove the system is
safe to carry astronauts to and from the ISS as part of NASA's
commercial Crew Program.
The first test,
conducted on June 24th at the U.S. Army’s White Sands
Missile Range in New Mexico, used a full-scale Starliner test
article, known as a boiler plate, designed to simulate the actual
spacecraft. This test featured a double failure scenario meaning one
of the parachute system’s two drogue parachutes and one of the
three main parachutes were both intentionally disabled to test how
the remaining parachutes handled the additional loads during
deployment and descent. The next test occurred on
June 26th using a dart-shaped test device meant to
function as a Starliner weight simulant. The device was released from
a C-17 aircraft above the U.S. Army’s Yuma Proving Ground in
Arizona. This was a “high Q” test, meaning the parachutes were
intentionally inflated at higher pressures than they are expected to
see during missions.