天问一号飞運騎遊達达3亿CNSA – China National Space Administration – ESA – European Space agency Belt and road initiative mars mission…first Mars exploration mission, Tianwen- Martian Probe One on 23rd July 2022 On the second anniversary of the launch of Tianwen-1, high-definition images of Phobos were sent back
23 July 2022 Today is the second anniversary of the launch of the Tianwen-1 mission, and the orbiter returned Phobos images. Recently, the Tianwen-1 operation team seized the opportunity when the orbiter was relatively close to Phobos, used a high-resolution camera to image Phobos, and obtained a clear image of the “full moon” state.
Phobos (Forbes) is one of the two natural satellites of Mars, with a size of about 27 kilometers × 22 kilometers × 18 kilometers. It runs in a near circular orbit at an altitude of about 6,000 kilometers from the surface of Mars, and orbits Mars every day. about 3 turns. The orbiter runs on a polar elliptical orbit with an altitude of about 220 kilometers near the fire point and an altitude of about 10,800 kilometers at the far fire point with a period of about 7 hours. Due to the orbital relationship between Phobos and the orbiter, as well as the lighting requirements during imaging, the operation team made precise calculations and precise control, and obtained a clear image with a resolution of about 50 meters when the two were about 5,100 kilometers apart.
The image shows that Phobos is a small celestial body with irregular shape, in the shape of a potato. The stripes on the surface can be seen in the upper left of the picture, which may be formed by the impact of the impact process. There is an obvious impact crater in the upper right of the picture, with a diameter of about 2 kilometer, named Öpik crater (Upik was an Estonian astronomer, known for his research on asteroids and meteorites).
Another satellite of Mars is Deimos (Deimos), with an average radius of only about 6.2 kilometers. The two satellites are named after the two sons of Ares, the god of war in ancient Greek mythology. The Greeks used to call Mars by Ares. Both moons are small irregular objects that many scientists believe were captured by Mars’ gravity into Mars’ orbit, but their origins remain controversial.
Image: National Astronomical Observatory…
Images and visuals are from CNSA- China National Space Administration also from there respectives- CLEP –China Lunar Exploration Project..