IWLOP #053 - Rima Ariadaeus

Wide, prominent rima. Exceptional object when close to the terminator. It is a classic graben formed by separation of the lunar surface and down-dropping of material. This rima has a very notable fault structure apparent in its make-up. It consists of a series of offset segments and at least one offset may well be visible.

Location: 7.0 N 13.0 E    Origin: Tectonic     Size: 220 km     Rukl: 34    Type: Rill

Objects: Rima Ariadaeus, Julius Caesar, Rima Hyginus
Others Identified : Agrippa, Arago, Boscovich, Cayley, de Morgan, Godin, Manners, Rimae Triesnecker, Silberschlag, Sosigenes, Tempel, Whewell

Observation 1:
Location: Home
Date: 2019-04-11
Time: 11:40 PM ADT
Equipment: 10" Meade SCT, 10 mm eyepiece
Magnification: x250
Seeing: Very Good (4)
Transparency: Excellent (5)  

R1: Rima Ariadaeus cuts across mountainous features, across a ghost crater above Silberschlag and through ridges with small craters.
R2: The southeast wall of Julius Caesar is eroded. The floor looks filled as part of it is dark similar to there floor.
R3: Rima Ariadaeus and Rime Hyginus appear to form two mountain valleys going into Mare Vaporum. It appears that Rimae Trienecker forms the west rim of the valley 'delta'.

Observation 2:
Location: Home
Date: 2021-04-19
Time: 9:18 PM ADT
Equipment: 10" Meade SCT, 4.7 mm eyepiece + x2 Barlow
Magnification: x1060
Seeing: Good (3)
Transparency: Very Good (4) 

Others Identified: Ariadaeus, Sinus Honoris 

R2: The east and SE walls of Julius Caesar were non-existent. There was a line of craters across the east from SE to NW; small craters on the NW wall.  
R3: Rimae Ariadaeus and Rima Hyginus quite visible.

Found the crater Ariadaeus just south of the end of the Rima on the shore of Mare Tranquilitatis. Sosigenes visible. Sinus Honoris is NE of Julius Caesar with a ridged area between them.


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