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A New Atlas?
Lat: 6.45°N, Long: 28.02°W, Diam: 14.16 km, Depth: 2.86 km,
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is the classic flat-bottomed circular crater below center. The 7-km diameter circular crater in the lower right is
, and one shallow 4-km crater in the upper left is named after
, as shown. None of the domes, which have what appear to be volcanic caldera at their summits, are officially named, although on chart
System of Lunar Craters
(1966) they had the Greek-lettered designations shown. This cluster was unofficially called the
. The "six domes" referred to by Phillips (1989) include the one to the west (left) of
and a difficult to see one (with no summit pit) to the east of
. He also regarded the structure on the groove to the east of this as a dome. Moore and Cattermole saw
and its companion-without-summit-pit to the east as a single heart-shaped structure (Phillips, 1989, Fig. 15).
LPOD Photo Gallery
Lunar Orbiter Images
, made by Lunar Orbiter III, shows
and the nearby domes. Research: Danny Caes.
, made by Lunar Orbiter II, shows a small hillock (
; 3°45' north/ 27°50' west) with craterlet on top. Research: Danny Caes.
The domefield near
was a favourite target for detailed lunar drawings made by René Schlumberger; a dedicated observer of that area. A drawing made by him (of the Hortensius domefield) was included in the Dutch book
Op Ontdekking in het Maanland
by A.J.M. Wanders (1949), Plate XIX. Research: Danny Caes.
This is probably the same as the wonderful drawing by Schlumberger dated 8-4-1930 that appears on p. 127 of
(also reproduced as Figure 12 in Phillips, 1989).
Jun 24, 2008
HORTENSIUS.--This brilliant crater, about 10 miles in diameter, is remarkable for its depth, and as being a ray-centre surrounded by a nimbus of light. It has a central mountain, and Schmidt shows a minute crater on the outer slope of the S. wall. The former is a test object.
Depth data from
Kurt Fisher database
Pike, 1976: 2.86 km
Arthur, 1974: 2.86 km
Westfall, 2000: 2.86 km
Viscardy, 1985: 2.86 km
From the shadows in
, the east rim of
is from 2500-2900 m above the flat-looking floor.
is a thermal anomaly crater, implying a youthful age -
Moore et al, 1980
Martin van den Hove
(Martinus Hortensius) (1605 — August 7, 1639), a Dutch astronomer and mathematician. Van den Hove developed a method for measuring the diameters of planets based on the measured visual angle that his telescope embraced. Van den Hove corresponded with René
, and Galileo
This name has continued unchanged since its original use for this feature on
's map (
, p. 218).
None of the domes near
seem to have been named in the the original
Named Lunar Formations
. Four of them were given Greek-lettered names in the
System of Lunar Craters
charts; but these were dropped by the IAU in
, and none of them have been officially renamed.
D. Caes calls the domefield near Hortensius
The Hortensius domefield
, a name rather similar to that under which it is known in the
Amateur astronomer Jim Phillips (1989, p. 63) dubbed the six most prominent domes immediately north of
in recognition of the early drawing of them by René Schlumberger. This is strictly an unofficial name, but has appeared in several subsequent
Two Weeks in Domeland
(Hi-Res close up photograph of the
, by the Lunar Reconnaissance Orbiter).
: Dome field north of Hortensius.
Lynn, M. C.
A Radar Survey of Lunar Dome Fields.
Conference (Mar), 2011.
Wöhler, C. et al. 2006.
A combined spectrophotometric and morphometric study of the lunar mare dome fields near Cauchy, Arago, Hortensius and Milichius
Volume 183, pp. 237-264. (also avaliable as
Lena, Raffaello, et al. 2003.
The Moon: Domes in the Hortensius region
Journal of the Association of Lunar & Planetary Observers, The Strolling Astronomer
, Vol. 45, No. 1, p. 26 - 28 (Winter 2003)
Hill, Harold. 1991.
A Portfolio of Lunar Drawings
, pages 54, 55.
Phillips, Jim. 1989.
The new Lunar Dome Survey - The Hortensius-Milichius-Tobias Mayer region
Journal Association of Lunar and Planetary Observers
. Vol. 33, April 1989, pp. 61-72.
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