Want to see what Venus "looks like" small partners note, February 13, the closest planet to the earth, Venus, the largest brightness of the year, reaching a negative 4.9 magnitude, and even after the rising sun, you can also observe the wonders of Venus and the sun with the naked eye. All over the continent, from now until early August, you can see the most enchanting rays of the Daystar (Venus) before sunrise.
Of the eight planets in the Solar System, why is Venus the brightest? Astronomy enthusiasts told reporters that one is that Venus is the closest to the Earth, only 40 million kilometers at the closest time, and the apparent diameter of Venus is the largest, reaching 63 arcseconds. Because Venus is close to Earth, it also reflects more sunlight. Second, Venus has a thick atmosphere, and the reflectivity is the largest of the eight planets, reaching 59%. Venus is the brightest, reaching a magnitude of minus 4.9, and is the brightest object outside of the Sun and Moon.
Venus/Peng Jianhui photographed
On January 9 this year, Venus "merged". At this time, the Sun, Venus and earth are connected in an approximate straight line, and Venus is the closest to The Earth and has the largest apparent diameter. Venus has a phase of 0 and the public cannot see Venus. Only when Venus transits, people observe the sun with the help of a filter film, and the silhouette of Venus can be seen. After the "lower conjunction", Venus continues to travel in the direction of the "west distance". On February 13, Venus was the brightest, with a phase of 0.25, that is, the public could only witness 25% of the area of Venus illuminated by the sun, showing a "mothb moon" state. On March 20, Venus "West Distance". At this point, the Sun, Venus, and Earth are lined up in a right triangle with a right angle at Venus. The public observes Venus with a telescope, and Venus presents a "half-edge bright moon", like the "winding moon" around the eighth day of the first lunar calendar. Venus has an phase of 0.5, which is the area where we can see 50% of Venus illuminated by the Sun.
Schematic diagram of the orbit of Venus relative to the Earth / Drawn by Lee Wook Yeon
The above elaborates on the content of Venus's "lower, brightest, and large distance to the west", have the friends found that there is an intrinsic connection between them? Originally, Venus 'lowered' and "western great distance" were separated by about 70 days (or 71 days). Venus is brightest, at the midpoint of this time, that is, one-half of the 70 days, about 35 days. Venus phase: 0 for the lower conjunction; 0.25 for the brightest day of the day star; 0.5 for the western distance; 1 for the upper part; 0.5 for the east distance; 0.25 for the brightest of the Chang Gung star; 0 for the lower combination.
According to reports, the entire rendezvous period of Venus is as long as 584 days (from the lower to the lower). It is about 35 days before and after the "lower conjunction" of Venus, each with the brightest one. For about 70 days before and after the "lower union" of Venus, there is a large distance between the east and the large distance of the west of Venus.
According to astronomy enthusiasts, it is best to observe Venus 30 minutes to 60 minutes before sunrise, and the observation direction is at a low altitude in the south-southeast. On February 13, the sunrise time in Guangzhou was 7:01, that is, Guangzhou was the best observation from 6:01 to 6:31.
Text/Guangzhou Daily, Xinhuacheng Reporter: Ye Kas Correspondent: Li Jianji
Guangzhou Daily New Flower City Editor: Su Wanqian