Southern part of Oceanum Procellarum. The crater pair of Billy - Hansteen serves us as means of orientation. In-between the pair the bright massif of Hansteen Alpha. Near the weathered remains of Flamsteed P we find the landing site of Surveyor 1.
BILLY - Jacques de Billy. (Born: March 18, 1602, Compiègne, France - Died: January 14, 1679) French Jesuit - Astronomer and Mathematician. Rejected the superstitious Astrological views on Comets of his days.
(48Km /28Mi Ø ) (Dept: 1,210m /3,700ft) (13.8° S, 50.1° W)
Circular formation forming a pair with Hansteen.
FLAMSTEED - John Flamsteed. (1646 - 1679) English Astronomer. The First director of the Royal Greenwich Observatory 1676. Observed Solar spots and comets. Author of a cartographic projection system and a catalogue of 3000 stars, the first great stellar catalogue after Tycho Brahe's catalogue.
Christopher Hansteen. (26 September 1784,
Oslo. Norway - 11 April 1873, Oslo, Norway) Norwegian Astronomer and
Geophysics. Discovered the location of the magnetic north pole. Discovered
variations of the terrestrial magnetic field in 1821. Founder of the Oslo
observatory in 1833. Supervisor of works of the triangulation of Norway.
Crater. (122Km /72Mi Ø ) (10.6° S, 42.4° W) Remains of a walled plane flooded by lava. Similar to the half circular bay of the "Ocean of Storms", Oceanus Procellarum. Flat slopes to the North and steep slopes to the South. Walls drown in the lava of Oceanus Procellarum to the North saddled by Winthrop to the West and Letronne T & LA to the South. Very large flat floor supporting Letronne B to the Southeast. Ruins of visible central mountain at the end of Dorsa Rubey, white hill.
(721 x 488Km / 448 x 303Mi ) (Centre: about 0.0° N, 50.0° W) Procellarum is the
largest of the maria, stretching more than 2,500 km (1,600 Mi) across its
north-south axis and covering roughly 4,000,000 km2
). Larger lunar sea. 2,102,000 km2.
Very flat to the center. 80 m altitude difference in a 400 km diameter
Numerous ridges rilles, leftovers of walls. Ghost craters and lava flooded
craters, many small hills. The landscape of the area depicted on chart 41
is basically the same. Rays from Crater Copernicus and other ray craters.
|Flamsteed||F||0 5.4 km Ø||Dept: 1,050m|
|Flamsteed||FA||0 3.8 km Ø||Dept: 0,750m|
|Flamsteed||P||112.0 km Ø||Dept: 0.0m|
|Letronne||B||5.0 km Ø||Dept: 1,000m|
|Letronne||T||0 3.0 km Ø||Dept: 0,620m|