NGC/IC Project Restoration Effort

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NGC4186

 

Basic Information


Location and Magnitude


Right Ascension: 12:14:6.4
Declination: +14:43:33
Constellation: COM
Visual Magnitude: 13.8

Historic Information


Discoverer: Tempel
Year of discovery: 1877
Discovery aperture: 11.0

Observational


Summary description: pF, S, R, sp M 98
Sub-type: Sab

Corwin's Notes

===== NGC 4186. Tempel mentions this object in two of his papers (AN 2212 and AN 2439). In the earlier paper, the offset from M 98 (= N4192 = GC2786) is given as -10s and -10', leading to a position listed as 12 06 15 +15 32 (1855) [12 06 30 +15 30 (1860)] which is 10s off the NGC place (12 06 20 +15 31). However, the later paper lists the offset as +20s, -9.5m which gives 12 07 00 +15 31 (1860). This position agrees with that from Zwicky for an Sa galaxy with mp = 14.9; this was also earlier mentioned by Carlson (1940). The mistake seems to have been Dreyer's: he applied the right ascension offset (from Tempel's later paper) with the wrong sign. Carlson and RC2 are correct; RNGC, UGC, and VCC are incorrect.

Steve's Notes

===== NGC 4186 17.5" (5/10/86): faint, small, slightly elongated. Located 11.0' SSE of M98. 13" (4/29/84): faint, small, slightly elongated SW-NE, 11' SSE of M98.