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18.1° E 109 km Sinus Iridum: Bay of Rainbows 44.1° N 31.5° W 236 km Sinus Lunicus: Lunik Bay 31.8° N 1.4° W 126 km Sinus Medii: Bay of the center 2.4° N 1.7° E 335 km Sinus Roris: Bay of Dew 54.0° N 56.6° W 202 km Sinus Successus: Bay of Success 0.9° N 59.0° E 132 km
At this location the selenographic colongitude at sunrise is defined as 0°. Thus, by the time of the Full Moon the colongitude increases to 90°; at Last Quarter it is 180°, and at the New Moon the colongitude reaches 270°. Note that the Moon is nearly invisible from the Earth at New Moon phase except during a solar eclipse.
They ranged between 45 degrees east and west, and 5 degrees north and south of the center of the Moon's facing side. They were numbered 1 to 5, going from east to west. Site number 2, centered at , was the Sea of Tranquility site ultimately chosen. [2]
Mare Tranquillitatis / t r æ ŋ ˌ k w ɪ l ɪ ˈ t eɪ t ɪ s / (Latin for Sea of Tranquillity or Sea of Tranquility) [a] is a lunar mare that sits within the Tranquillitatis basin on the Moon. It contains Tranquility Base, the first location on another celestial body to be visited by humans.
The Moon's maximum and minimum declination vary because the plane of the Moon's orbit around Earth is inclined by about 5.14° with respect to the ecliptic plane, and the spatial direction of the Moon's orbital inclination gradually changes over an 18.6-year cycle, alternately adding to or subtracting from the 23.5° tilt of Earth's axis.
Selenography is the study of the surface and physical features of the Moon (also known as geography of the Moon, or selenodesy). [1] Like geography and areography , selenography is a subdiscipline within the field of planetary science .
Mons Gruithuisen Gamma (γ) is a lunar dome [1] that lies to the north of the crater Gruithuisen at the western edge of the Mare Imbrium. This massif is shaped as a rounded dome in the surface, occupying a diameter of 20 km and climbing gently to a height of over 1500 meters. [2] [3] At the crest is a small crater.
Location of the Aristarchus crater on the Moon. Aristarchus is located on the Aristarchus plateau, an elevated rocky rise in the midst of the Oceanus Procellarum , a large expanse of lunar mare . This is a tilted crustal block, about 200 km across, that rises to a maximum elevation of 2 km above the mare in the southeastern section. [ 2 ]