24.Bessel

The eastern part of Mare Serenitatis is criss-crossed by low ridges of hills, the highest ridge, approximately, winds along the 25th meridian.  (Serpentine Ridge) The edge of the Sea of Serenity is darker, and has a number of low rilles. Furthermore on the chart: At the summit of Posidonius Gamma we find a crater of 2km .

PROMONTORIUM ARCHERUSIA - Johannes Hevelius named this feature and while doing it made a spelling mistake, it should have been Acherusia ( Ἀχερουσία), in the ancient Geography a cape in Paphlagonia at the Black Sea, now called Baba Burun (Cape Baba) near Karadeniz Ereğli in what is now Turkey. According to Greek legend there is a  deep chasm at this place, into which Hercules is said to have descended to bring up the dog Cerberus.  

Cape. (41km /24Mi ) (Height: 1,500m /4,500ft) (16,79N, 21,96E) Isolated peak, the eastern-most point in the Montes Haemus range.

MONS ARGAEUS - Mount Argaeus, (Greek: Ἀργαῖος), the name in antiquity for a 3,960m high strato-volcano  in Cappadocia, now part of Turkey and now called  Erciyes Dağı.

Mountain. (51Km /30Mi ) (Height: 2,500m /7,600ft) (19.0N, 29.0) Apollo 17 landed near this mountain.

AUWERS - Arthur von Auwers. (1838 - 1915) German astronomer, determined the parallax of the Sun by means of Venus' transits over the solar-disk, and by observing Planetoids, in order to measure the distance from the earth to the Sun more accurately, and therefore be able to calculate the dimensions of the Solar System more accurately and with greater precision. Author of an astrometrical catalogue.

Crater. (20km /12Mi  ) (Dept: 1,680m /2,900ft) (15.1N, 17.2E) Crater, lava flooded, open towards the north.

BESSEL - Friedrich Bessel. (1784 - 1846) German mathematician and astronomer. turned his mathematical skills to problems in navigation. This in turn led to an interest in astronomy as a way of determining longitude. Founder of the observatory of Knigsberg. Observation of 75,000 stars. Measuring of the distance to 61 Cygni in 1838. Prediction of the existence of the companion of Sirius.

Crater. (16Km /10Mi  ) (Dept: 1,740m /5,300ft) (21.8N, 17.9E) Circular, bowl-shaped. The rim that has a higher albedo than the floor or the surrounding Mare.

BESSEL H - (See Bessel).

Crater. (4km /2Mi ) (Dept: unknown) (25.7 N, 20.0 E) Isolated circular formation with bowl shape. Few steep slopes. Low walls. Round floor.

DAWES - William Rutter Dawes. (1799 1868) English astronomer. High quality drawings of Mars, extensive measurements of double stars as well as observations of planets.

Crater. (18Km /11Mi ) (Dept: 2,330m /7,000ft) (1.7N, 26W) Circular, sharp rim, low central rise, darker floor, inner walls steep and free of erosion.

DESEILLIGNY - Jules Deseilligny (18681918) French amateur astronomer, specialized in selenography.

Crater. (6,6Km /4Mi ) (Dept: 1,190m /3,600ft) (21N, 20E) Crater nearly circular, small craterlets.

PLINIUS - Plinius the Elder (ca. 79 - 23 BC) Roman author, wrote "Historia Naturalis".

Crater (43Km /26Mi ) (Dept: 4,300m /14,107ft) (15.4N, 23.7E) Sharp rim, slightly oval, terraced inner wall, irregular outer rampart, inner floor hilly, irregular central peak.

MARE SERENITATIS - Sea of Serenity. Named so by Riccioli.

Mare. (674km/419Mi ) (305,00km2) (28.0N, 17.5E) Location of a Mascon.

 

 

 

 

   

 

 

 

 

 

 

 

 

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TACQUET - Andr Tacquet(1612 - 1660) Flemish mathematician.

Crater. (6.9km /4Mi ) (Dept:1,260m /3,900ft) (16,6N, 19,2E) Small, bowl-shaped crater, surroundings marked by high-albedo ejecta.

VERY - Frank Washington Very. (1852 - 1927) American astronomer. Measured the temperature of the surfaces of the Moon and other planets using a bolometer.

Crater. (5,1km/3Mi ) (Dept: 950m /2,900ft) (25.6N, 25.3E) Small bowl-shaped, circular.

SARABHAI - Vikram Ambalal Sarabhai. (Gujarati: વિક્રમ અંબાલાલ સારાભાઇ) (1919 - 1971) Indian physicist. The father of India's space program.

Crater. (8,6km /5Mi ) (Dept: 1,660m /5,000ft) (24.7N, 21.0E) Small, circular, bowl-shaped.

BRACKETT - Frederick Sumner Brackett (1896 1988) American physicist and spectroscopist who observed the infra-red radiation of the Sun.

Crater (8.87Km /5Mi ) (Dept: 310m /9,514ft) (17.9N, 23.6E) Circular ghost crater, lava flooded, rim nearly vanished.

 

 

 

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