MOON­WATCH

Sky at Night Magazine - - THE SKY GUIDE JULY -

Uk­ert is a small, 23km di­am­e­ter crater, lo­cated mid­way be­tween Mare Va­po­rum and Si­nus Medii. Ac­tu­ally, di­am­e­ter isn’t quite the cor­rect term here be­cause Uk­ert looks more like an equi­lat­eral tri­an­gle with bulging edges. In­ter­est­ingly, the three ‘edges’ ap­pear to be con­nected by ridges run­ning from their mid­points to a cen­tral peak.

Uk­ert stands out against the rough ter­rain be­tween Va­po­rum and Medii. There is a cu­ri­ous lin­ear­ity to the rough­ness, which seems to run in par­al­lel stri­a­tions from north­west to south­east. The 26km crater

Uk­ert M, lo­cated im­me­di­ately east of Uk­ert, cre­ates a marked in­ter­rup­tion within th­ese lin­ear fea­tures. De­spite its sim­i­lar size, Uk­ert M lacks the carved-out rim of Uk­ert, and sim­ply re­sem­bles a flat­tened area within the rough ter­rain.

A num­ber of smaller craters lie nearby, with 9km Uk­ert A to the north and 5km Uk­ert P to the east. A 6km crater, lo­cated 20km to the south­west, is ac­tu­ally Pal­las N, a satel­lite of the V is largely formed from of 50km Pal­las, which lies the el­e­vated fea­ture that runs 110km south­west of Uk­ert. from the north­east edge of For a real chal­lenge, try Uk­ert M to the north­east. The to spot the tiny 3.5km crater point of the V is formed by the that sits at the north­ern ver­tex el­e­vated re­gion that runs along of Uk­ert’s tri­an­gu­lar shape. the east and south of 17km

The re­gion be­tween Uk­ert Uk­ert N, a flat-floored crater and Uk­ert A is de­fined as the con­joined to Uk­ert M. The 21km crater Uk­ert B, but it west­ern arm then be­gins with is quite in­dis­tinct. the il­lu­mi­nated east­ern rim of De­spite its diminu­tive size, Uk­ert ex­tend­ing to­wards the Uk­ert is given a boost in north. A pair of high ridges no­to­ri­ety around the first com­pletes the main sec­tion of quar­ter phase be­cause it forms the V’s west­ern arm.

part of the ‘clair-ob­scur’ (or When the V is vis­i­ble, there’s ex­ag­ger­ated shadow) ef­fect also a wealth of de­tail nearby. known as the Lu­nar V. This To the south­east is 27km

forms at the same time as the Tries­necker, only par­tially bet­ter-known Lu­nar X, both il­lu­mi­nated. To the east is a of them cre­ated when the com­plex set of cracks in the lava ad­vanc­ing morn­ing ter­mi­na­tor known as Ri­mae Tries­necker. il­lu­mi­nates cer­tain el­e­vated They are among the most fea­tures to pro­duce X and V in­tri­cate and ex­ten­sive rille shapes that ap­pear to float sys­tems on the lu­nar sur­face against the darker, shad­owed and well worth catch­ing un­der sur­face be­low. The east­ern arm oblique il­lu­mi­na­tion.

“For a chal­lenge try to spot the tiny 3.5km crater on Uk­ert’s north­ern tip”

This is the re­gion that cre­ates the Lu­nar V at the same time the Lu­nar X is vis­i­ble fur­ther south 100km Pal­las N Pal­las Uk­ert B Uk­ert Uk­ert A Uk­ert M Uk­ert P Uk­ert N Hy­gi­nus Tries­necker Ri­mae Tries­necker

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