September 16, 2021

New Moon in July 2021 – Use the “invisible” moon to capture Mercury this week (same goes for Venus and Mars!)

The new moon will arrive on Friday (July 9), the day when Mercury reaches its highest altitude in the morning sky.
The moon officially becomes a new moon at 9:16 in the evening. EDT (0116, July 10, Greenwich Mean Time), when the moon is directly between the sun and the earth. Technically, these two objects are joined together, which means that they are on the same north-south line passing through the celestial pole, close to the North Star. (The term conjunction also applies to other celestial bodies, such as planets.) The time of the moon phase depends on the position of the moon relative to the earth, so the new moon occurs at the same time all over the world, the only difference is due to your time zone, in Melbourne, Australia, For example, the new moon occurs at 11:16 AM on July 10.
Since the new moon is between the earth and the sun, it is invisible unless there is a solar eclipse (the new moon passes in front of the sun) and the moon and sun rise and set almost at the same time. Not all new moons will have a solar eclipse, because the moon’s orbit is slightly tilted about 5 degrees from the earth’s orbital plane, which means that it doesn’t always pass exactly between the sun and the earth. The shadow of the earth, the moon “overlooked” our planet. (The next solar eclipse will be on December 4, 2021).
Related: The Brightest Planets in the Night Sky in July – How (and When) to See Them
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Visible planet
In the hours before sunrise on Thursday (July 8), Mercury will be at the highest altitude above the horizon at the time of this appearance, and will also be in conjunction with the 28-day moon. The moment of joining occurs at 12:39 a.m. EST (0439 GMT), so when the pair is visible in New York City, the moon will pass the closest moment when they rise at 4:08 a.m. local time. reported the astronomical observation website At sunrise
, Mercury will be approximately 14 degrees high in Taurus, to the right of a very thin crescent moon. Mercury is as bright as Vega; at magnitude 0. The best time to capture it may be around half an hour after its departure, when it is about 5.5 degrees above the horizon and will appear on the right side of the moon. Be careful observing planets so close to the sun; even accidentally focusing the sun with binoculars at dawn can cause permanent retinal burns and possibly blindness.
Observers close to the equator will see Mercury more easily. When people move to low latitudes (from the North Pole or the South Pole), the ecliptic, the projection plane of the Earth’s orbit in the sky, forms a steeper angle with the horizon. This means that all planets that float within a few degrees of the ecliptic tend to reach higher altitudes. For example, in Quito, Ecuador, the conjunction occurred at 11:39 p.m. Wednesday (July 7). Local time, Mercury and the moon will rise at 4:50 AM. The sunrise time is 6:16 a.m., and at 6 a.m., the height of the two celestial bodies will be about 16 degrees.
On Monday (July 12), the first quarter moon will pass approximately 3 degrees north of Venus.
On Monday (July 12), the first quarter moon will pass approximately 3 degrees north of Venus. (Image Source: NASA / JPLCaltech) At the same time, Venus
will appear as an evening star in the coming months and will be visible after sunset from New York City on July 9 until it sets at 10:01 a.m. P.M. Local time. At sunset (8:28 PM local time in New York), the planet will be approximately 17 degrees above the west-northwest horizon. An interesting exercise is to see how long it takes to find out after sunset. Mars will also light up the evening sky: on the night of the new moon, this planet will be on the left side of Venus, but it is more difficult to detect because this red planet is darker than Venus, and it will not be visible until at least 15 to 20. A few minutes after sunset, by then, the earth will be only 14 degrees above the horizon. The two planets will be separated by a degree or two lunar diameters.
Monday (July 12), the moon will approach Venus and Mars. The new moon will conjunct Venus at 5:09 a.m. Eastern time on July 12 (0909 GMT) and will pass approximately 3 degrees north of Venus. About an hour later, at 6:10 am EST (1010 GMT), the moon will pass less than 4 degrees (3 degrees 46 arc minutes) north of Mars. From North America, the conjunction will not be visible, but at sunset, the two will be farther apart, but Venus will be on the right and below the moon.
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If you live in Asia or the Western Pacific, when Venus and Mars are above the horizon, you will see a meeting moment. For example, in Tokyo, the conjunction with Venus occurred at 6:09 PM on July 12. Local time, about 50 minutes before sunset, it happened at 7 o’clock in the evening. Local time. The conjunction with Mars is at 7:10 in the evening.
In Melbourne, Australia, the conjunction of Venus occurred at 7:09 PM. Local time and the sun set at 5:17 pm, that is, 5:30 pm. As the sky darkens, they will all be about 18 degrees high in the northwest. The conjunction of Mars is at 8:10 in the evening. Local time.
Saturn rises at 9:45 PM on the night of the new moon (July 9). In New York, in Capricorn, the sea goat; reach the meridian


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