Astronomical Diary
MOON PHASES
lastquarterjpg newmoonjpg firstquarterjpg fullmoonjpg
Last Quarter New Moon First Quarter Full Moon
Jul 25
9:18 AM
Jul 03
3:16 AM
Jul 09
6:55 PM
Jul 17
5:35 AM
SPACE WEATHER
Current Condition X-ray Solar Flares
SOLAR WIND

Speed: 330.9 km/sec
Density: 5.4 protons/cm3
More Data: ACE, DSCOVR

Explanation | More Data
Updated: Jul 01 at 0032 UT

***The sun is blank -- no sunspots.

Credit: Solar Dynamics Observatory(SDO)/Helioseismic
and Magnetic Imager (HMI).
Daily Sun: 30 Jun 2019
DSun
6-hr max: A7 2014 UT Jun 30
24-hr: A8 1024 UT Jun 30

Explanation | More Data

Updated: Jun 30 at 2359 UT
Time (PST) of rise and set of some planets at 10-day interval
DATE MERCURY VENUS MARS JUPITER SATURN
Rise Set Rise Set Rise Set Rise Set Rise Set
Jul 10 6:50 AM 7:26 PM 4:51 AM 5:49 PM 6:52 AM 7:40 PM 4:06 PM *3:24 AM 6:20 PM *5:39 AM
Jul 20 5:50 AM 6:25 PM 5:06 AM 6:01 PM 6:41 AM 7:25 PM 3:23 PM *2:42 AM 5:37 PM *4:56 AM
Jul 30 4:48 AM 5:27 PM 5:21 AM 6:11 PM 6:29 AM 7:09 PM 2:41 PM *2:00 AM 4:55 PM *4:14 AM

* = following day
Astronomical Events July 2019
Total Solar Eclipse
A partial eclipse of the Sun will occur on July 3, but it will not be visible in the Philippines. The eclipse will begin at exactly 12:55 AM (Philippine Standard Time). It is visible in Eastern Oceania and most of South America.


Partial Lunar Eclipse
A Partial Lunar Eclipse will occur on July 17 and will be visible in the Philippines as shown in Figure 1. The event will be seen in Australasia, Asia except for the northeastern part, Africa, Europe except N. Scandinavia and most of South America.

The eclipse will begin at 2:42 AM Philippine Standard Time (PhST) and will end at 8:19 AM (PhST).

In Manila, the Moon will rise at 6:04 PM on 16 July and will set at 5:38 AM on 17 July. The major phases of the eclipse are as follows:
Phases Time
Fig1
Figure 1
Penumbral eclipse begins: 2:42 AM (PhST)
Partial eclipse begins: 4:01 AM (PhST)
Greatest eclipse: 5:30 AM (PhST)
Moonset: 5:38 AM (PhST)

Lunar eclipses are safe to watch and observers need not use any kind of protective filters for the eyes. A binocular will help magnify the view and will make the red coloration of the Moon brighter.


Meteor Shower
The Southern Delta Aquarids meteor shower will be best observed from July 28 to 31 and is estimated to peak before midnight and onwards on July 29/30. These are part of a complex of radiants in Aquarius, Capricornus and Piscis Austrinus, all of which combine with sporadic and early Perseid activity to provide a nice display of meteors in late July. The stream normally produces about 5-10 meteors/hour with overall activity of about 15 meteors/hour under good sky conditions. Unfortunately, the bright Moon will interfere with the activity. Figures 3 & 3a show the position of the constellation Aquarius-the Water Bearer, where the radiant will originate.
Fig3
Figure 3
(click to view image)
Fig3a
Figure 3a
(click to view image)
Stars and Constellations
Stargazers will be having a nice time watching the night sky with the famous Summer Triangle of the stars Vega, Deneb and Altair of the constellations Lyra, Aquila and Cygnus, respectively, being well placed in the eastern horizonm as shown in Figures 2 & 2a. Also shown in Figure 2a is a well known constellations like Ophiuchus -the Serpent Holder, Scorpius -the Scorpion and Sagittarius-the Archer.
Fig2
Figure 2
(click to view image)
Fig2a
Figure 2a
(click to view image)
Planets Whereabout
On July 1 at 3:00 A.M., Uranus and Neptune will be observed at about 24 and 58 degrees above the east northeastern and southeastern horizon lying among the background stars of the constellation Aries, the Ram and Aquarius, the Water-Bearer and will be having magnitudes of +5.8 and +7.8, respectively. Both planets will be observable throughout the early morning hours during the month. Observing these giant planets will require familiarity with a starmap and a telescope to be able to view its features.

At 7:00 PM, Jupiter and Saturn will be found at about 40 and 15 degrees above the southeastern and east southeastern horizon and will be located among the stars of the constellation Ophiuchus, the Serpent Bearer and Sagittarius, the Archer, glowing at magnitudes -2.5 and +0.1, respectively. They will remain visible in the evening sky throughout the month.

At 8:00 PM, Mercury and Mars will be spotted at about 13 and 11 degrees above the west northwestern horizon. Both planets will abode among the background stars of the constellation Cancer, the Crab. They will be glowing at magnitudes +1.0 and +1.80, respectively.

Venus will be difficult to observe due to its proximity to the Sun during the month.

Figure 4 shows how to compare apparent magnitudes of celestial bodies such as planets and stars.
Fig4
Figure 4
(click to view image)

JULY 2019
DATE EVENT TIME (PhST)
2 Total Solar Eclipse
(NOT visible in the Philippines)
5 Earth at aphelion 6:11 AM
5 Moon at perigee (nearest distance to Earth = 363,799.433 km) 1:00 PM
7 Mercury 4° S of Mars 7:00 PM
10 Saturn at opposition 1:00 AM
14 Jupiter 3° N of Moon 12:00 AM
17 Pluto 0.004° N of Moon 2:00 AM
17 Partial Lunar Eclipse
(VISIBLE in the Philippines)
5:30 AM
(maximum eclipse)
21 Moon at apogee (farthest distance to Earth = 405,424.747 km) 7:59 AM
21 Mercury in inferior conjunction 9:00 PM