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Posts Tagged ‘Chinese’

07/15/2021 – Ephemeris – What the Chinese saw in the face of the Moon

July 15, 2021 Comments off

This is Bob Moler with Ephemeris for Thursday, July 15th. Today the Sun will be up for 15 hours and 13 minutes, setting at 9:25, and it will rise tomorrow at 6:12. The Moon, 2 days before first quarter, will set at 12:45 tomorrow morning.

Looking at the Moon tonight with the naked eye or binoculars, the dark patches called seas, which are really lava filled plains, make out the ears, head, and top part of the body of a rabbit that appears upside down. It’s the Chinese Jade Rabbit, Yutu. The seas involved, with their English names are: Serenity, the top of its body; Tranquility, its head; the more prominent ear is Fertility; while the other ear is a combination of the Bay of Roughness and Sea of Nectar. Yutu is the pet rabbit of the Moon goddess Chang’e, who flew to the Moon to escape her pursuers. The Chinese space agency has named all their moon landers Chang’e and their lunar rovers Yutu in their honor.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – 4 hr). They may be different for your location.

Addendum

The Moon tonight with the Jade Rabbit

The Moon tonight with the Jade Rabbit delineated in the seas and one bay the dark lava covered plains of the Moon. Created using Stellarium.

The Jade Rabbit seen on a full moon

The Jade Rabbit seen on a full moon rotated close to what tonight’s Moon is. Actually, the ancient Chinese saw the rabbit pounding medicine.

04/19/2021 – Ephemeris – The Moon tonight, Yutu the Jade Rabbit

April 19, 2021 Comments off

This is Ephemeris for Monday, April 19th. Today the Sun will be up for 13 hours and 42 minutes, setting at 8:33, and it will rise tomorrow at 6:49. The Moon, 1 day before first quarter, will set at 3:47 tomorrow morning.

Let’s take a look at the Moon tonight. Binoculars or a small telescope will be handy for seeing the lunar features. The Moon will be at actual first quarter at 3 am tomorrow morning so the terminator or in this case sunrise line on the Moon will cut it nearly in half. To the naked eye the face of the Man in the Moon isn’t yet noticeable, but the top part of the upside down Chinese rabbit Yutu can be glimpsed. His ears are the seas of Fertility and Nectar, his head is the Sea of Tranquility, and the top part of his body is the Sea of Serenity. The lower part of his body and his arms pulverizing medicine with a mortar and pestle will have to wait until the Moon is nearer full. Yutu is the pet rabbit of the Chinese Moon goddess Chang’e.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

The Moon as it should appear at 10 pm tonight, April 19, 2021. Can you see the rabbit’s head? Created using Stellarium.
Yutu, the Jade Rabbit pounding medicine, as he appears in the lunar seas on a full moon. Rotated to fit tonight’s moon orientation. Via Wikipedia, no source provided.

12/11/2018 – Ephemeris – The Chinese just launched a spacecraft to land on the far side of the Moon

December 11, 2018 Comments off

Ephemeris for Tuesday, December 11th. The Sun will rise at 8:10. It’ll be up for 8 hours and 52 minutes, setting at 5:02. The Moon, half way from new to first quarter, will set at 9:06 this evening.

Last Friday the Chinese launched their Chang’e 4 spacecraft to land on the far side of the Moon in January. That side of the Moon has been mistakenly called the dark side. It actually gets more sunlight than the near, Earth facing, side. This will be an extraordinary feat. So how can they tell what’s happening on the other side? In preparation for this landing attempt the Chinese put a communications relay satellite in a halo orbit about the Earth-Moon L2 Lagrange point 38 thousand miles (61 thousand km) beyond the Moon. It is a kind of a gravitational point of equilibrium behind the Moon. One of five, and they are very useful. The satellite will lazily orbit that point, in view of the lander and the Earth for continuous communication between the Earth and the lander.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Chang'e 4 trajectory

Chinese mission to land a lander and rover on the far side of the Moon. Click on the image to enlarge.  It’s in Chinese except the numbers. Credit China Aerospace Science and Technology Corporation via Space.com.

How Queuiao, the lunar communications satellite orbiting L2 performs its relay function

How Queuiao, the lunar communications satellite orbiting L2 performs its relay function. Click on image to enlarge. Credit CNSA via gbtimes.com.

Note:  Next Monday’s program will be about Lagrangian points.

09/24/2018 – Ephemeris – The harvest moon and the Chinese Mid-Autumn Festival

September 24, 2018 Comments off

Ephemeris for Monday, September 24th. The Sun will rise at 7:32. It’ll be up for 12 hours and 4 minutes, setting at 7:36. The Moon, at full today, will rise at 7:51 this evening.

Tonight at 10:53 p.m. the Moon will be full. And since it’s only two days past the autumnal equinox, this makes it the Harvest Moon. This full moon also marks the Chinese Mid-Autumn Festival to honor the Moon and the story of Chang’e a mortal woman to took an elixir and flew off to the Moon and became a goddess. Another story revolves around the Jade Rabbit pounding Medicine. I talked about the figure of a rabbit seen on the face of the Moon last Monday. He is a companion to Chang’e, and has a mortar on the Moon with him. He pounds out the medicine that makes the inhabitants of the sky immortal. The Chinese lunar probes are named Chang’e. Chang’e 3 landed on the Moon in 2013 and sent out a lunar rover named Yutu , the Jade Rabbit.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

The Jade Rabbit
The Jade Rabbit on the Moon. The more complete title is Jade Rabbit pounding medicine (in the mortar at his feet.
Chang'e flying to the Moon
Chang’e flying to the Moon. Unknown source.

03/27/2018 – Ephemeris – Chinese first space lab will reenter the Earth’s atmosphere in a few days

March 27, 2018 Comments off

Ephemeris for Tuesday, March 27th. The Sun will rise at 7:32. It’ll be up for 12 hours and 31 minutes, setting at 8:04. The Moon, 3 days past first quarter, will set at 6:14 tomorrow morning.

The first Chinese space lab Tiangong-1 is estimated to reenter the atmosphere and mostly burn up in the latter days of this week or early next week. There may be parts that will survive the fiery entry into the Earth’s atmosphere. The space lab was launched in 2011, and has been visited by one robotic and two crewed spacecraft. However the Chinese lost control of it in 2016 and cannot control it’s reentry location. It was launched with an inclination of 42.8 degrees, so it flies between 42.8 north and south latitudes, so it won’t land on anybody in the IPR listening area. When NASA’s Skylab space station made an uncontrolled entry in 1979, a piece fell in Australia. They sued the United States $400 for littering according to Space.com.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Tiangong-1

The Tiangong-1 space lab. Source: Space.com, Chinese space agency photo.

Tiangong-1 Potential Re-entry area

Tiangong-1 Potential Re-entry area.  Click on image to enlarge. Source Space.com, European Space Agency data.

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