North Western part of Mare Imbrium which contains the Sinus Iridum, the Rainbow bay nearby which (on December 14, 2013), the Chinese Lander -Rover combination "Jade Rabbit" landed following Luna 17, with rover Lunachod, (November 15, 1970), 43 years earlier. The Edge of the Rainbow bay is formed by the Jura mountains, which end in two cape: Promontorium Laplace (NE), and Promontorium Heraclides (SW) both embracing the Rainbow Bay.
Crater. (26 Km /15 Mi ø) (Dept: 1,910 m /5,800 ft) (40.4° N, 23.1° W) Circular formation with inner walls that curve down to a relatively flat floor, tiny craterlet located at the midpoint of the interior, and a small craterlet along the southwestern rim. Forms a pair with Le Verrier.
PROMONTORIUM HERACLIDES - Heraclides of Pontus (Ἡρακλείδης ὁ Ποντικός).Greek Astronomer. (Born: Heraclea Pontica in 390 BC - Died: Heraclea Pontica 310 BC) Disciple of Plato. Heraclides proposed that the apparent daily motion of the stars was created by the rotation of the Earth on its axis once a day.
HERSCHEL (CAROLYN) - Carolyn Lucretia Herschel (16 March 1750 - 9 January 1848) German Astronomer. Discoverer of several comets and in particular the periodic comet 35P/Herschel-Rigollet, which bears her name.
SINUS IRIDUM - The feature was given the Latin name for the Bay of Rainbows by Giovanni Riccioli in 1651. Planned landing site of Chang'e 3, Jade Rabbit, China's 2013 lunar exploration mission, which landed nearby in Mare Imbrium.
Bay. (411 Km /157 Mi ø ) (45.0° N, 32.0° W) Very large crater shaped formation of 237,000 km². Steep slopes constituted by North slopes of Montes Jura. Walls constituted by Montes Jura gobbled to the South in the lava of Mare Imbrium. Flat floor filled with lava and situated 600 m lower than Mare Imbrium.
Montes. (Length: 422 km) (Dept: 6,00 0m /18.200 ft) (47.0° N, 37.0° W) Mountainous North wall of Sinus Iridum. Starting at Promontorium Laplace (NE), and ending with Promontorium Heraclides (SW). Composed of several parallel and concentric summit lines. Peter Grego describes a figurine of "The Moon Maiden", seeing her facial profile in Promontorium Heraclides.
PROMONTORIUM LAPLACE - Cape Laplace. Named after, Pierre Simon marquis de Laplace. (Born: Beaumont en Auge, France, 1749 - Died: Paris, France, 1827) French Astronomer mathematician and physicist. Member of the Academy of Sciences in 1783. Came up with the theory of the nebular origin of the solar system in 1796. Works in celestial mechanic from 1798 to 1825. Theory of probabilities in 1812. Works on gases and the sounds.
Crater. (Dept: 3,200 m /9,700 ft) (41 km /24 Mi ø ) (45.7° N, 40.2° W) Surrounded by a rugged region of mounts and rises. Ridges are joined to the north and south ends of the rim. The crater has a low central peak at the midpoint of the floor.