Astronomical Diary
MOON PHASES
lastquarterjpg newmoonjpg firstquarterjpg fullmoonjpg
Last Quarter New Moon First Quarter Full Moon
Mar 28
12:10 PM
Mar 07
12:04 AM
Mar 14
6:27 PM
Mar 21
9:43 AM
SPACE WEATHER
Current Condition X-ray Solar Flares
SOLAR WIND

Speed: 414.0 km/sec
Density: 3.9 protons/cm3
More Data: ACE, DSCOVR

Explanation | More Data
Updated: Mar 07 at 0143 UT

***Sunspot AR2734 is quiet and it has a stable magnetic field that poses no threat for strong flares.
In this respect, it is typical of Solar Minimum sunspots.

Credit: Solar Dynamics Observatory(SDO)/Helioseismic
and Magnetic Imager (HMI).
Daily Sun: 07 Mar 2019
DSun
6-hr max: A0 2210 UT Mar 07
24-hr: A0 2210 UT Mar 07

Explanation | More Data

Updated: Mar 07 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
Mar 02 7:06 AM 7:12 PM 3:46 AM 3:10 PM 9:30 AM 10:08 PM 1:07 AM 12:21 PM 2:57 AM 2:13 PM
Mar 12 6:18 AM 6:23 PM 3:53 AM 3:22 PM 9:15 AM 9:58 PM 12:32 AM 11:45 PM 2:21 AM 1:37 PM
Mar 22 5:14 AM 5:10 PM 3:58 AM 3:34 PM 9:01 AM 9:47 PM 11:52 PM 11:09 AM 1:45 AM 1:00 PM

* = following day
Astronomical Events March 2019
Vernal Equinox
The Sun's motion allows it to pass the First Point of Aries (known as Vernal Equinox), an imaginary location in the sky defined in our coordinate system as a place where the ecliptic and the celestial equator meet. It marks the zero point of the Right Ascension grid, the celestial equivalent of longitude on Earth. Due to the wobbling motion of the Earth known as precession, the First Point of Aries now lies in Pisces. The Sun reaches this point on March 21 at 5:58 AM (Philippine Standard Time), marking the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. On the day of the equinox, night and day are about the same length on the same latitude in both hemispheres.
Stars and Constellations
The month of March offers a good viewing for well-known constellations as shown in Figures 1 & 1 a. At around 8:00 PM on the southwestern horizon, two prominent clusters of stars can be observed, the letter V formation of stars known as the Hyades cluster and the Pleiades Cluster or the Seven Sisters which belongs to the constellation of Taurus, the Bull as shown in Figure 2. The bright star of this constellation is a red giant star called Aldebaran, which represents the right eye o the Bull. Just below Taurus is another constellation known as Orion with its prominent star, Betelgeuse (an Arabic name which means armpit) is a super red giant and the biggest star in the sky, which is around 800 times the size of our Sun. On the lower part of Orion lies the constellation of Gemini, the Twin. Castor and Pollux are the prominent stars of this constellation.
Fig1
Figure 1
(click to view image)
Fig1a
Figure 1a
(click to view image)
Fig2
Figure 2
(click to view image)
Planets Whereabout
On 01 March, at 5:00 AM, an array of celestial bodies lines up in the east-southeastern sky as Venus, Saturn, waning crescent Moon and Jupiter will be found at about 38, 16, 8 and 45 degrees above the east-southeastern horizon shining brightly at magnitude -4.5, -1.8 and -0.4, respectively. They will remain visible throughout the month before sunrise. This conjunctions of astronomical bodies will be a good target for observations and astrophotography under a dark and cloudless sky condition.

At 6:30 PM, Mercury, Uranus, and Mars will be observed, standing at about 10, 41 and 52 degrees above the western horizon with magnitudes +0.29, +5.8 and +1.2, respectively. Mercury will lie among the stars of the constellation Pisces, the Fish while Uranus and Mars will abode among the stars of the constellation Aries, the Ram. Observing these planets will require a star map under a dark and clear sky condition.

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

Figures 3 & 4 show how to compare apparent magnitudes and angular separation of celestial bodies such as planets and stars.
Fig3
Figure 3
(click to view image)
Fig4
Figure 4
(click to view image)
March 2019
DATE EVENT TIME (PhST)
2 Saturn 0.3° South of Moon 4:00 AM
2 Venus 0.7° North of Moon 4:00 AM
4 Moon at apogee (farthest distance to Earth = 406,349.084 km) 7:26 PM
8 Vesta in conjunction with Sun 6:00 AM
11 Mars 6° North of Moon 8:00 PM
20 Moon at perigee (nearest distance to Earth = 359,475.786 km) 3:48 AM
21 VERNAL EQUINOX 5:48 AM
27 Mercury stationary 8:00 PM